Steel Grade Comparison Chart | Baowu Steel<\/title>\r\n <meta name=\"description\" content=\"Comprehensive steel grade comparison chart: ASTM, EN, GB, JIS cross-reference for carbon steel, stainless steel, alloy steel, pressure vessel steel, wear-resistant steel, and more.\">\r\n <style>\r\n * { margin: 0; padding: 0; box-sizing: border-box; }\r\n body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background: #f0f2f5; color: #333; line-height: 1.5; }\r\n .page-container { margin-top: 0; padding-top: 0; }\r\n .hero-section { background: linear-gradient(135deg, #0c3483 0%, #4facfe 100%); padding: 50px 20px 60px; text-align: center; color: #fff; position: relative; z-index: 1; }\r\n .hero-section h1 { font-size: 36px; font-weight: 800; margin-bottom: 12px; line-height: 1.2; }\r\n .hero-section p { font-size: 16px; opacity: .92; max-width: 720px; margin: 0 auto; }\r\n .breadcrumb { max-width: 1400px; margin: 0 auto; padding: 14px 20px; font-size: 12px; color: #999; background: #fff; 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overflow-y: visible; } .filter-section { flex-direction: column; align-items: stretch; } .filter-stats { margin-left: 0; text-align: center; } }\r\n @media (max-width: 600px) { .card { padding: 22px 18px; } }\r\n <\/style>\r\n<\/head>\r\n<body>\r\n\r\n<div class=\"page-container\">\r\n\r\n <section class=\"hero-section\">\r\n <h1>Steel Grade Comparison Chart<\/h1>\r\n <p>Comprehensive cross-reference guide for steel grades across ASTM, EN, GB, JIS, and other international standards. Find equivalent materials for carbon steel, stainless steel, alloy steel, pressure vessel steel, and more.<\/p>\r\n <\/section>\r\n\r\n <div class=\"breadcrumb\">\r\n <a href=\"https:\/\/baowu-steel.com\/\">Home<\/a> \u203a\r\n <a href=\"https:\/\/baowu-steel.com\/tools\/\">Tools<\/a> \u203a\r\n Steel Grade Comparison Chart\r\n <\/div>\r\n\r\n <div class=\"content-wrapper\">\r\n <div class=\"three-col-grid\">\r\n\r\n \r\n <aside class=\"left-sidebar\">\r\n <div class=\"contact-card\">\r\n <h3>Contact Us<\/h3>\r\n <p>Get factory-direct pricing. Fast reply guaranteed.<\/p>\r\n <a href=\"mailto:sales@baowu-steel.com\" class=\"cta-btn\">Get Free Quote<\/a>\r\n <div class=\"contact-info\">\r\n <a href=\"tel:+8618764178985\"><span>\ud83d\udcde<\/span> +86 187 6417 8985<\/a>\r\n <a href=\"mailto:sales@baowu-steel.com\"><span>\u2709<\/span> sales@baowu-steel.com<\/a>\r\n <a href=\"https:\/\/wa.me\/8618764178985\" target=\"_blank\" rel=\"noopener\"><span>\ud83d\udcac<\/span> WhatsApp<\/a>\r\n <\/div>\r\n <\/div>\r\n\r\n <div class=\"sidebar-card\">\r\n <h3>Steel Tools<\/h3>\r\n <nav class=\"tool-links\">\r\n <a href=\"https:\/\/baowu-steel.com\/tools\/pipe-weight-calculator\/\"><span class=\"icon\">\ud83d\udccf<\/span> Steel Pipe Weight Calculator<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/steel-plate-weight-calculator\/\"><span class=\"icon\">\ud83d\udcd0<\/span> Steel Plate Weight Calculator<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/steel-coil-weight-calculator\/\"><span class=\"icon\">\u2699\ufe0f<\/span> Steel Coil Weight Calculator<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/galvanized-steel-coating-thickness-chart\/\"><span class=\"icon\">\ud83d\udee1\ufe0f<\/span> Galvanized Steel Coating Thickness Chart<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/steel-grade-comparison-chart\/\" class=\"current\"><span class=\"icon\">\ud83d\udd0d<\/span> Steel Grade Comparison Chart<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/h-beam-weight-chart\/\"><span class=\"icon\">\ud83c\udfd7\ufe0f<\/span> H Beam Weight Chart<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/steel-price-per-ton-today\/\"><span class=\"icon\">\ud83d\udcb0<\/span> Steel Price Per Ton Today<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/steel-pipe-sizes-chart\/\"><span class=\"icon\">\ud83d\udcca<\/span> Steel Pipe Sizes Chart<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/sheet-metal-gauge-chart\/\"><span class=\"icon\">\ud83d\udccb<\/span> Sheet Metal Gauge Chart<\/a>\r\n <\/nav>\r\n <\/div>\r\n <\/aside>\r\n\r\n \r\n <main class=\"main-content\">\r\n\r\n \r\n <div class=\"filter-section\">\r\n <input type=\"text\" id=\"gradeFilterInput\" class=\"filter-input\" placeholder=\"\ud83d\udd0d Enter grade or standard, e.g. A36, 304, Q345B, S355...\" onkeyup=\"filterGrades()\">\r\n <button class=\"filter-btn\" onclick=\"filterGrades()\">Filter<\/button>\r\n <button class=\"filter-clear\" onclick=\"clearFilter()\">Clear<\/button>\r\n <span class=\"filter-stats\" id=\"filterStats\">Showing all<\/span>\r\n <\/div>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>Carbon Structural Steel<\/h2>\r\n <p class=\"desc\">General-purpose carbon steel for construction, bridges, and machinery. Common grades with minimum yield strength ranging from 205 MPa to 275 MPa.<\/p>\r\n <div class=\"table-container\">\r\n <table class=\"data-table\" id=\"table-carbon\">\r\n <thead><tr><th>ASTM \/ AISI<\/th><th>EN 10025-2<\/th><th>GB\/T 700 \/ GB\/T 1591<\/th><th>JIS G3101<\/th><th>DIN (Old)<\/th><th>Yield Strength (MPa)<\/th><th>Application<\/th><\/tr><\/thead>\r\n <tbody>\r\n <tr><td class=\"grade-highlight\">ASTM A36<\/td><td>S235JR \/ S275JR<\/td><td>Q235B \/ Q275<\/td><td>SS400<\/td><td>St37-2<\/td><td>250<\/td><td>General structures<\/td><\/tr>\r\n <tr><td>ASTM A283 Gr C<\/td><td>S235JR<\/td><td>Q235B<\/td><td>SS400<\/td><td>St37-2<\/td><td>205<\/td><td>Low\/intermediate strength<\/td><\/tr>\r\n <tr><td>ASTM A283 Gr D<\/td><td>S275JR<\/td><td>Q275<\/td><td>SM400A<\/td><td>St44-2<\/td><td>230<\/td><td>Structural plates<\/td><\/tr>\r\n <tr><td>ASTM A529 Gr 50<\/td><td>S355JR<\/td><td>Q355B<\/td><td>SM490A<\/td><td>St52-3<\/td><td>345<\/td><td>Building frames<\/td><\/tr>\r\n <tr><td>ASTM A573 Gr 65<\/td><td>S355J2<\/td><td>Q355D<\/td><td>SM490B<\/td><td>\u2014<\/td><td>355<\/td><td>Improved toughness<\/td><\/tr>\r\n <tr><td>ASTM A709 Gr 36<\/td><td>S235JR<\/td><td>Q235B<\/td><td>SS400<\/td><td>St37-2<\/td><td>250<\/td><td>Bridge steel (36 ksi)<\/td><\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>High Strength Low Alloy (HSLA) Structural Steel<\/h2>\r\n <p class=\"desc\">HSLA steels offer higher strength-to-weight ratios with improved corrosion resistance and weldability. Common yield strength levels: 345\u2013450 MPa.<\/p>\r\n <div class=\"table-container\">\r\n <table class=\"data-table\" id=\"table-hsla\">\r\n <thead><tr><th>ASTM \/ ASME<\/th><th>EN 10025-2 \/ EN 10025-6<\/th><th>GB\/T 1591 \/ GB\/T 16270<\/th><th>JIS G3106<\/th><th>DIN (Old)<\/th><th>Yield Strength (MPa)<\/th><th>Application<\/th><\/tr><\/thead>\r\n <tbody>\r\n <tr><td class=\"grade-highlight\">ASTM A572 Gr 50<\/td><td>S355JR \/ S355J2<\/td><td>Q345B \/ Q355B<\/td><td>SM490B<\/td><td>St52-3<\/td><td>345<\/td><td>Bridges, buildings, heavy equipment<\/td><\/tr>\r\n <tr><td>ASTM A572 Gr 55<\/td><td>S420N \/ S420M<\/td><td>Q420B<\/td><td>SM520<\/td><td>\u2014<\/td><td>380<\/td><td>Higher strength structures<\/td><\/tr>\r\n <tr><td class=\"grade-highlight\">ASTM A572 Gr 65<\/td><td>S460Q \/ S460QL<\/td><td>Q460C \/ Q460D<\/td><td>SM570<\/td><td>\u2014<\/td><td>450<\/td><td>Cranes, mining machinery<\/td><\/tr>\r\n <tr><td>ASTM A633 Gr C<\/td><td>S355N \/ S355NL<\/td><td>Q355E<\/td><td>SM490C<\/td><td>\u2014<\/td><td>345<\/td><td>Low-temperature toughness<\/td><\/tr>\r\n <tr><td>ASTM A656 Gr 80<\/td><td>S550Q<\/td><td>Q550D<\/td><td>\u2014<\/td><td>\u2014<\/td><td>550<\/td><td>Heavy machinery, truck frames<\/td><\/tr>\r\n <tr><td class=\"grade-highlight\">ASTM A514 Gr Q \/ S<\/td><td>S690QL \/ S690QL1<\/td><td>Q690D \/ Q690E<\/td><td>\u2014<\/td><td>\u2014<\/td><td>690<\/td><td>Crane booms, high-stress structures<\/td><\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>Pressure Vessel Steel<\/h2>\r\n <p class=\"desc\">Steel plates for boilers, pressure vessels, and storage tanks. Designed for medium to elevated temperature service with guaranteed impact toughness.<\/p>\r\n <div class=\"table-container\">\r\n <table class=\"data-table\" id=\"table-pv\">\r\n <thead><tr><th>ASTM \/ ASME<\/th><th>EN 10028-2<\/th><th>GB 713<\/th><th>JIS G3115 \/ G3118<\/th><th>DIN (Old)<\/th><th>Yield Strength (MPa)<\/th><th>Service Condition<\/th><\/tr><\/thead>\r\n <tbody>\r\n <tr><td>ASTM A285 Gr C<\/td><td>P235GH<\/td><td>Q245R<\/td><td>SPV235<\/td><td>HI<\/td><td>205<\/td><td>Low-pressure vessels<\/td><\/tr>\r\n <tr><td class=\"grade-highlight\">ASTM A516 Gr 70<\/td><td>P355GH<\/td><td>Q345R<\/td><td>SPV355<\/td><td>StE355<\/td><td>260<\/td><td>Moderate\/low temp pressure vessels<\/td><\/tr>\r\n <tr><td>ASTM A537 Cl 1<\/td><td>P355NH<\/td><td>Q370R<\/td><td>SPV450<\/td><td>\u2014<\/td><td>345<\/td><td>Normalized, moderate temp<\/td><\/tr>\r\n <tr><td>ASTM A387 Gr 11 Cl 2<\/td><td>13CrMo4-5<\/td><td>15CrMoR<\/td><td>SCMV 430<\/td><td>13CrMo44<\/td><td>310<\/td><td>Elevated temp (Cr\u2011Mo steel)<\/td><\/tr>\r\n <tr><td>ASTM A387 Gr 22 Cl 2<\/td><td>10CrMo9-10<\/td><td>12Cr2Mo1R<\/td><td>SCMV 4<\/td><td>10CrMo910<\/td><td>310<\/td><td>High temp, hydrogen service<\/td><\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>Weathering \/ Corrosion Resistant Steel<\/h2>\r\n <p class=\"desc\">Also known as corten steel, these grades develop a stable rust-like appearance for atmospheric corrosion resistance. No painting required.<\/p>\r\n <div class=\"table-container\">\r\n <table class=\"data-table\" id=\"table-weathering\">\r\n <thead><tr><th>ASTM<\/th><th>EN 10025-5<\/th><th>GB\/T 4171<\/th><th>JIS G3125<\/th><th>Yield Strength (MPa)<\/th><th>Application<\/th><\/tr><\/thead>\r\n <tbody>\r\n <tr><td>ASTM A588 Gr A \/ B<\/td><td>S355J2W \/ S355K2W<\/td><td>Q355NHC<\/td><td>SPA\u2011H<\/td><td>345<\/td><td>Bridges, transmission towers<\/td><\/tr>\r\n <tr><td>ASTM A242 Type 1<\/td><td>S355J0WP<\/td><td>Q355GNH<\/td><td>SPA\u2011C<\/td><td>345<\/td><td>Architectural structures<\/td><\/tr>\r\n <tr><td>ASTM A606 Type 4<\/td><td>S355J2W<\/td><td>09CuPCrNi\u2011A<\/td><td>\u2014<\/td><td>345<\/td><td>Rolled sheets, building panels<\/td><\/tr>\r\n <tr><td>ASTM A709 Gr 50W<\/td><td>S355J2W<\/td><td>Q355NHC<\/td><td>SMA490AW<\/td><td>345<\/td><td>Weathering bridge steel<\/td><\/tr>\r\n <tr><td>\u2014<\/td><td>S235J2W<\/td><td>Q235NHC<\/td><td>\u2014<\/td><td>235<\/td><td>Light structural applications<\/td><\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>Wear-Resistant \/ Abrasion Resistant Steel<\/h2>\r\n <p class=\"desc\">High-hardness steel plates for mining, earthmoving, and material handling equipment. Hardness ranges from 400 HBW to 500 HBW.<\/p>\r\n <div class=\"table-container\">\r\n <table class=\"data-table\" id=\"table-wear\">\r\n <thead><tr><th>ASTM \/ Industry<\/th><th>SSAB Hardox\u00ae<\/th><th>GB\/T 24186<\/th><th>JIS \/ JFE<\/th><th>Hardness (HBW)<\/th><th>Application<\/th><\/tr><\/thead>\r\n <tbody>\r\n <tr><td>AR400<\/td><td>Hardox 400<\/td><td class=\"grade-highlight\">NM400<\/td><td>JFE\u2011EH400<\/td><td>370\u2013430<\/td><td>Buckets, dump truck bodies<\/td><\/tr>\r\n <tr><td>AR450<\/td><td>Hardox 450<\/td><td class=\"grade-highlight\">NM450<\/td><td>JFE\u2011EH450<\/td><td>425\u2013475<\/td><td>Chutes, crusher liners<\/td><\/tr>\r\n <tr><td>AR500<\/td><td>Hardox 500<\/td><td class=\"grade-highlight\">NM500<\/td><td>JFE\u2011EH500<\/td><td>470\u2013530<\/td><td>Heavy abrasion, wear plates<\/td><\/tr>\r\n <tr><td>\u2014<\/td><td>Hardox 550<\/td><td>NM550<\/td><td>\u2014<\/td><td>525\u2013575<\/td><td>Extreme wear applications<\/td><\/tr>\r\n <tr><td>T\u20111 (A514)<\/td><td>Hardox 400<\/td><td>NM400<\/td><td>WEL\u2011TEN<\/td><td>~400<\/td><td>Structural + wear resistance<\/td><\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>Stainless Steel (Austenitic & Duplex)<\/h2>\r\n <p class=\"desc\">Common stainless steel grades for corrosion-resistant applications in chemical, food processing, marine, and architectural industries.<\/p>\r\n <div class=\"table-container\">\r\n <table class=\"data-table\" id=\"table-ss\">\r\n <thead><tr><th>ASTM A240 \/ AISI<\/th><th>EN 10088-2 (Name)<\/th><th>EN 10088-2 (Number)<\/th><th>GB\/T 3280<\/th><th>JIS G4304<\/th><th>Typical Application<\/th><\/tr><\/thead>\r\n <tbody>\r\n <tr><td class=\"grade-highlight\">304<\/td><td>X5CrNi18\u201110<\/td><td>1.4301<\/td><td>06Cr19Ni10<\/td><td>SUS304<\/td><td>Food equipment, kitchenware<\/td><\/tr>\r\n <tr><td class=\"grade-highlight\">304L<\/td><td>X2CrNi19\u201111<\/td><td>1.4306 \/ 1.4307<\/td><td>022Cr19Ni10<\/td><td>SUS304L<\/td><td>Welded structures (low carbon)<\/td><\/tr>\r\n <tr><td class=\"grade-highlight\">316<\/td><td>X5CrNiMo17\u201112\u20112<\/td><td>1.4401<\/td><td>06Cr17Ni12Mo2<\/td><td>SUS316<\/td><td>Marine, chemical processing<\/td><\/tr>\r\n <tr><td>316L<\/td><td>X2CrNiMo17\u201112\u20112<\/td><td>1.4404<\/td><td>022Cr17Ni12Mo2<\/td><td>SUS316L<\/td><td>Pharmaceutical, welded corrosion resistance<\/td><\/tr>\r\n <tr><td>321<\/td><td>X6CrNiTi18\u201110<\/td><td>1.4541<\/td><td>07Cr18Ni11Ti<\/td><td>SUS321<\/td><td>High temperature, stabilized<\/td><\/tr>\r\n <tr><td>310S<\/td><td>X8CrNi25\u201121<\/td><td>1.4845<\/td><td>06Cr25Ni20<\/td><td>SUS310S<\/td><td>Furnace parts, heat exchangers<\/td><\/tr>\r\n <tr><td>2205 (Duplex)<\/td><td>X2CrNiMoN22\u20115\u20113<\/td><td>1.4462<\/td><td>022Cr22Ni5Mo3N<\/td><td>SUS329J4L<\/td><td>Oil & gas, chemical tanks<\/td><\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>Alloy Steel (Quenched & Tempered \/ Carburizing)<\/h2>\r\n <p class=\"desc\">Medium-carbon alloy steels for machinery parts, gears, shafts, and high-strength fasteners. Heat treatable to achieve desired mechanical properties.<\/p>\r\n <div class=\"table-container\">\r\n <table class=\"data-table\" id=\"table-alloy\">\r\n <thead><tr><th>ASTM \/ AISI \/ SAE<\/th><th>EN 10083-3<\/th><th>GB\/T 3077<\/th><th>JIS G4105 \/ G4106<\/th><th>DIN<\/th><th>Typical Application<\/th><\/tr><\/thead>\r\n <tbody>\r\n <tr><td>4130<\/td><td>25CrMo4 (1.7218)<\/td><td>30CrMo<\/td><td>SCM430<\/td><td>25CrMo4<\/td><td>Aircraft tubing, bike frames<\/td><\/tr>\r\n <tr><td class=\"grade-highlight\">4140<\/td><td>42CrMo4 (1.7225)<\/td><td>42CrMo<\/td><td>SCM440<\/td><td>42CrMo4<\/td><td>Gears, shafts, spindles<\/td><\/tr>\r\n <tr><td>4145<\/td><td>42CrMoS4 (1.7227)<\/td><td>42CrMo<\/td><td>SCM445<\/td><td>\u2014<\/td><td>Heavy-duty shafts, drill collars<\/td><\/tr>\r\n <tr><td>4340<\/td><td>36CrNiMo4 (1.6511)<\/td><td>40CrNiMoA<\/td><td>SNCM439<\/td><td>36CrNiMo4<\/td><td>Landing gear, heavy forgings<\/td><\/tr>\r\n <tr><td>8620<\/td><td>20NiCrMo2\u20112 (1.6523)<\/td><td>20CrNiMo<\/td><td>SNCM220<\/td><td>21NiCrMo2<\/td><td>Carburized gears, camshafts<\/td><\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>Line Pipe Steel (API 5L \/ ISO 3183)<\/h2>\r\n <p class=\"desc\">High-strength steel for oil, gas, and water transmission pipelines. Grades indicate minimum yield strength in ksi or MPa.<\/p>\r\n <div class=\"table-container\">\r\n <table class=\"data-table\" id=\"table-linepipe\">\r\n <thead><tr><th>API 5L (PSL 1\/2)<\/th><th>ISO 3183 \/ EN 10208-2<\/th><th>GB\/T 9711<\/th><th>Yield Strength (MPa)<\/th><th>Yield Strength (ksi)<\/th><th>Application<\/th><\/tr><\/thead>\r\n <tbody>\r\n <tr><td>X42 \/ L290<\/td><td>L290NB \/ L290MB<\/td><td>L290<\/td><td>290<\/td><td>42<\/td><td>Low-pressure gathering lines<\/td><\/tr>\r\n <tr><td class=\"grade-highlight\">X52 \/ L360<\/td><td>L360NB \/ L360QB<\/td><td>L360<\/td><td>360<\/td><td>52<\/td><td>Cross-country pipelines<\/td><\/tr>\r\n <tr><td>X56 \/ L390<\/td><td>L390NB \/ L390QB<\/td><td>L390<\/td><td>390<\/td><td>56<\/td><td>Offshore risers<\/td><\/tr>\r\n <tr><td class=\"grade-highlight\">X60 \/ L415<\/td><td>L415NB \/ L415QB<\/td><td>L415<\/td><td>415<\/td><td>60<\/td><td>High-pressure gas transmission<\/td><\/tr>\r\n <tr><td class=\"grade-highlight\">X65 \/ L450<\/td><td>L450QB \/ L450MB<\/td><td>L450<\/td><td>450<\/td><td>65<\/td><td>Major oil & gas trunklines<\/td><\/tr>\r\n <tr><td>X70 \/ L485<\/td><td>L485QB \/ L485MB<\/td><td>L485<\/td><td>485<\/td><td>70<\/td><td>High-pressure long-distance pipelines<\/td><\/tr>\r\n <tr><td>X80 \/ L555<\/td><td>L555QB \/ L555MB<\/td><td>L555<\/td><td>555<\/td><td>80<\/td><td>Arctic pipelines, high-strength applications<\/td><\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>Low Temperature & Cryogenic Steel<\/h2>\r\n <p class=\"desc\">Steel grades with guaranteed impact toughness at sub-zero temperatures, for LNG storage, cryogenic piping, and arctic structures.<\/p>\r\n <div class=\"table-container\">\r\n <table class=\"data-table\" id=\"table-cryo\">\r\n <thead><tr><th>ASTM \/ ASME<\/th><th>EN 10028-4 \/ EN 10216-3<\/th><th>GB\/T 3531 \/ GB 3531<\/th><th>JIS G3127 \/ G3460<\/th><th>Min. Service Temp (\u00b0C)<\/th><th>Application<\/th><\/tr><\/thead>\r\n <tbody>\r\n <tr><td class=\"grade-highlight\">ASTM A333 Gr 6<\/td><td>P265NL \/ 16Mo3<\/td><td>16MnDR \/ 09MnNiDR<\/td><td>STPL 39<\/td><td>\u201145 \u00b0C<\/td><td>LNG piping, low\u2011temp vessels<\/td><\/tr>\r\n <tr><td>ASTM A333 Gr 3<\/td><td>12Ni14<\/td><td>08Ni3DR<\/td><td>STPL 46<\/td><td>\u2011100 \u00b0C<\/td><td>Ethylene storage<\/td><\/tr>\r\n <tr><td>ASTM A333 Gr 8<\/td><td>X8Ni9<\/td><td>06Ni9DR<\/td><td>STPL 690<\/td><td>\u2011195 \u00b0C<\/td><td>LNG tanks, cryogenic service<\/td><\/tr>\r\n <tr><td>ASTM A203 Gr A \/ B<\/td><td>11MnNi5\u20113 \/ 13MnNi6\u20113<\/td><td>15MnNiDR \/ 12MnNiVR<\/td><td>SL2N26 \/ SL3N28<\/td><td>\u201160 \u00b0C<\/td><td>Low\u2011temperature pressure vessels<\/td><\/tr>\r\n <tr><td>ASTM A353 \/ A553 Type I<\/td><td>X7Ni9 \/ X8Ni9<\/td><td>06Ni9DR<\/td><td>SL9N60<\/td><td>\u2011195 \u00b0C<\/td><td>LNG storage tanks<\/td><\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>How to Use This Comparison Chart<\/h2>\r\n <ol style=\"list-style: none; counter-reset: step; margin-left: 0; padding-left: 0;\">\r\n <li style=\"counter-increment: step; position: relative; padding: 14px 14px 14px 56px; background: #f8fafc; border-radius: 10px; margin-bottom: 10px; border: 1px solid #e8eef5;\"><span style=\"position: absolute; left: 14px; top: 50%; transform: translateY(-50%); width: 30px; height: 30px; background: linear-gradient(135deg, #0c3483, #4facfe); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 13px;\">1<\/span><strong>Identify your base standard<\/strong> \u2014 Locate your known grade under ASTM, EN, GB, or JIS columns.<\/li>\r\n <li style=\"counter-increment: step; position: relative; padding: 14px 14px 14px 56px; background: #f8fafc; border-radius: 10px; margin-bottom: 10px; border: 1px solid #e8eef5;\"><span style=\"position: absolute; left: 14px; top: 50%; transform: translateY(-50%); width: 30px; height: 30px; background: linear-gradient(135deg, #0c3483, #4facfe); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 13px;\">2<\/span><strong>Find equivalent grades<\/strong> \u2014 Read across the same row to find equivalent materials in other standards.<\/li>\r\n <li style=\"counter-increment: step; position: relative; padding: 14px 14px 14px 56px; background: #f8fafc; border-radius: 10px; margin-bottom: 10px; border: 1px solid #e8eef5;\"><span style=\"position: absolute; left: 14px; top: 50%; transform: translateY(-50%); width: 30px; height: 30px; background: linear-gradient(135deg, #0c3483, #4facfe); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 13px;\">3<\/span><strong>Check mechanical properties<\/strong> \u2014 Verify yield strength and impact requirements match your project specifications.<\/li>\r\n <li style=\"counter-increment: step; position: relative; padding: 14px 14px 14px 56px; background: #f8fafc; border-radius: 10px; margin-bottom: 10px; border: 1px solid #e8eef5;\"><span style=\"position: absolute; left: 14px; top: 50%; transform: translateY(-50%); width: 30px; height: 30px; background: linear-gradient(135deg, #0c3483, #4facfe); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 13px;\">4<\/span><strong>Confirm with standards<\/strong> \u2014 Always refer to the current standard documents (ASTM, EN, GB, JIS) for exact chemical and mechanical requirements.<\/li>\r\n <\/ol>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>Frequently Asked Questions<\/h2>\r\n\r\n <div class=\"faq open\">\r\n <div class=\"faq-question\" onclick=\"toggleFAQ(this)\">What does \"equivalent\" mean in steel grade comparison?<\/div>\r\n <div class=\"faq-answer\">\"Equivalent\" means the steel grades have similar chemical composition and mechanical properties, and can often be substituted for general applications. However, equivalents are not identical copies \u2014 subtle differences in alloying elements, testing requirements, and impact temperatures exist. Always consult the specific project's governing code and material requisition before substitution.<\/div>\r\n <\/div>\r\n <div class=\"faq\">\r\n <div class=\"faq-question\" onclick=\"toggleFAQ(this)\">What is the most common structural steel grade worldwide?<\/div>\r\n <div class=\"faq-answer\">ASTM A36 (USA), S235JR\/S275JR (Europe), Q235B (China), and SS400 (Japan) are the most common general-purpose structural steel grades. A36 has a minimum yield strength of 250 MPa, while S275JR has 275 MPa. They are functionally interchangeable for most structural applications.<\/div>\r\n <\/div>\r\n <div class=\"faq\">\r\n <div class=\"faq-question\" onclick=\"toggleFAQ(this)\">What is the difference between S355JR and S355J2?<\/div>\r\n <div class=\"faq-answer\">Both are EN 10025-2 structural steels with 355 MPa minimum yield strength. The difference lies in impact toughness: S355JR guarantees 27 J at 20 \u00b0C, while S355J2 guarantees 27 J at \u201120 \u00b0C. For cold climate applications, S355J2 is preferred.<\/div>\r\n <\/div>\r\n <div class=\"faq\">\r\n <div class=\"faq-question\" onclick=\"toggleFAQ(this)\">Is Q345B the same as S355JR?<\/div>\r\n <div class=\"faq-answer\">Q345B and S355JR are very similar low-alloy structural steels with comparable strength levels (~345\u2013355 MPa yield). Q345B is the Chinese standard, S355JR is the European standard. Both are widely used as equivalents to ASTM A572 Gr 50. Chemical composition ranges differ slightly \u2014 Q345B has lower max phosphorus and sulfur limits.<\/div>\r\n <\/div>\r\n <div class=\"faq\">\r\n <div class=\"faq-question\" onclick=\"toggleFAQ(this)\">What is the ASTM equivalent of 42CrMo4?<\/div>\r\n <div class=\"faq-answer\">42CrMo4 (EN 10083-3, 1.7225) is equivalent to AISI\/SAE 4140. The Japanese equivalent is SCM440, and the Chinese equivalent is 42CrMo (GB\/T 3077). These grades are essentially interchangeable for most heat-treated machinery parts.<\/div>\r\n <\/div>\r\n <div class=\"faq\">\r\n <div class=\"faq-question\" onclick=\"toggleFAQ(this)\">How do I convert API 5L X-grade to ISO 3183 L\u2011grade?<\/div>\r\n <div class=\"faq-answer\">ISO 3183 uses the same grade designation logic as API 5L but with \"L\" instead of \"X\" and yield strength rounded to the nearest 0 or 5 MPa. For example: X52 = L360 (360 MPa), X60 = L415 (415 MPa), X65 = L450 (450 MPa), X70 = L485 (485 MPa).<\/div>\r\n <\/div>\r\n <div class=\"faq\">\r\n <div class=\"faq-question\" onclick=\"toggleFAQ(this)\">What is the difference between 304 and 304L stainless steel?<\/div>\r\n <div class=\"faq-answer\">304L has lower carbon content (max 0.03%) compared to 304 (max 0.08%). This reduces carbide precipitation during welding, improving intergranular corrosion resistance in welded structures. 304L corresponds to EN 1.4306\/1.4307, while 304 corresponds to EN 1.4301.<\/div>\r\n <\/div>\r\n <div class=\"faq\">\r\n <div class=\"faq-question\" onclick=\"toggleFAQ(this)\">What is NM400 steel equivalent to?<\/div>\r\n <div class=\"faq-answer\">NM400 (Chinese standard GB\/T 24186) is equivalent to AR400 (ASTM) and Hardox 400 (SSAB). All provide Brinell hardness in the range of 370\u2013430 HBW and are used for wear-resistant applications like buckets, chutes, and dump truck bodies.<\/div>\r\n <\/div>\r\n <\/section>\r\n <\/main>\r\n\r\n \r\n <aside class=\"right-sidebar\">\r\n\r\n <div class=\"sidebar-card\">\r\n <h3>Legend<\/h3>\r\n <ul class=\"quick-ref\">\r\n <li><span><span class=\"legend-badge legend-astm\">ASTM<\/span> American<\/span><span class=\"value\">USA<\/span><\/li>\r\n <li><span><span class=\"legend-badge legend-en\">EN<\/span> European<\/span><span class=\"value\">EU<\/span><\/li>\r\n <li><span><span class=\"legend-badge legend-gb\">GB<\/span> Chinese<\/span><span class=\"value\">China<\/span><\/li>\r\n <li><span><span class=\"legend-badge legend-jis\">JIS<\/span> Japanese<\/span><span class=\"value\">Japan<\/span><\/li>\r\n <li><span>DIN<\/span><span class=\"value\">Germany (Old)<\/span><\/li>\r\n <li><span>ISO<\/span><span class=\"value\">International<\/span><\/li>\r\n <\/ul>\r\n <\/div>\r\n\r\n <div class=\"sidebar-card\">\r\n <h3>Quick Grade Lookup<\/h3>\r\n <ul class=\"quick-ref\">\r\n <li><span>A36 \u2248 S235JR<\/span><span class=\"value\">Q235B<\/span><\/li>\r\n <li><span>A572 Gr 50 \u2248 S355JR<\/span><span class=\"value\">Q345B<\/span><\/li>\r\n <li><span>A514 \u2248 S690QL<\/span><span class=\"value\">Q690D<\/span><\/li>\r\n <li><span>A516 Gr 70 \u2248 P355GH<\/span><span class=\"value\">Q345R<\/span><\/li>\r\n <li><span>304 \u2248 1.4301<\/span><span class=\"value\">SUS304<\/span><\/li>\r\n <li><span>316 \u2248 1.4401<\/span><span class=\"value\">SUS316<\/span><\/li>\r\n <li><span>4140 \u2248 42CrMo4<\/span><span class=\"value\">SCM440<\/span><\/li>\r\n <li><span>X60 \u2248 L415<\/span><span class=\"value\">L415<\/span><\/li>\r\n <\/ul>\r\n <\/div>\r\n\r\n <div class=\"sidebar-card\">\r\n <h3>Key Standards<\/h3>\r\n <ul class=\"quick-ref\">\r\n <li><span>Structural (Carbon)<\/span><span class=\"value\">ASTM A36, EN 10025\u20112<\/span><\/li>\r\n <li><span>Structural (HSLA)<\/span><span class=\"value\">ASTM A572, EN 10025\u20116<\/span><\/li>\r\n <li><span>Pressure Vessel<\/span><span class=\"value\">ASTM A516, EN 10028\u20112<\/span><\/li>\r\n <li><span>Stainless Steel<\/span><span class=\"value\">ASTM A240, EN 10088\u20112<\/span><\/li>\r\n <li><span>Line Pipe<\/span><span class=\"value\">API 5L, ISO 3183<\/span><\/li>\r\n <li><span>Alloy Steel<\/span><span class=\"value\">ASTM A29, EN 10083\u20113<\/span><\/li>\r\n <li><span>Weathering<\/span><span class=\"value\">ASTM A588, EN 10025\u20115<\/span><\/li>\r\n <li><span>Wear\u2011Resistant<\/span><span class=\"value\">GB\/T 24186<\/span><\/li>\r\n <\/ul>\r\n <\/div>\r\n\r\n <div class=\"sidebar-card\">\r\n <h3>Yield Strength Conversion<\/h3>\r\n <ul class=\"quick-ref\">\r\n <li><span>36 ksi<\/span><span class=\"value\">250 MPa<\/span><\/li>\r\n <li><span>50 ksi<\/span><span class=\"value\">345 MPa<\/span><\/li>\r\n <li><span>60 ksi<\/span><span class=\"value\">415 MPa<\/span><\/li>\r\n <li><span>65 ksi<\/span><span class=\"value\">450 MPa<\/span><\/li>\r\n <li><span>80 ksi<\/span><span class=\"value\">550 MPa<\/span><\/li>\r\n <li><span>100 ksi<\/span><span class=\"value\">690 MPa<\/span><\/li>\r\n <li><span>1 MPa = 0.145 ksi<\/span><span class=\"value\">1 ksi = 6.895 MPa<\/span><\/li>\r\n <\/ul>\r\n <\/div>\r\n\r\n <div class=\"sidebar-card\">\r\n <h3>Important Notes<\/h3>\r\n <div class=\"tip-box\">\r\n <strong>Equivalent \u2260 Interchangeable<\/strong>\r\n This chart provides reference equivalents for general comparison only. Chemical composition ranges, mechanical properties, and testing requirements may vary between standards. Always verify with current standard documents and confirm suitability with your engineer before substitution.\r\n <\/div>\r\n <\/div>\r\n <\/aside>\r\n <\/div>\r\n <\/div>\r\n<\/div>\r\n\r\n<script>\r\n function toggleFAQ(el) {\r\n el.parentElement.classList.toggle('open');\r\n }\r\n\r\n function filterGrades() {\r\n const input = document.getElementById('gradeFilterInput');\r\n const filterText = input.value.trim().toUpperCase();\r\n const allTables = document.querySelectorAll('.data-table tbody');\r\n let totalVisibleRows = 0;\r\n let totalRows = 0;\r\n\r\n allTables.forEach(tbody => {\r\n const rows = tbody.querySelectorAll('tr');\r\n rows.forEach(row => {\r\n totalRows++;\r\n const rowText = row.textContent.toUpperCase();\r\n if (filterText === '' || rowText.includes(filterText)) {\r\n row.style.display = '';\r\n totalVisibleRows++;\r\n } else {\r\n row.style.display = 'none';\r\n }\r\n });\r\n });\r\n\r\n const stats = document.getElementById('filterStats');\r\n if (filterText === '') {\r\n stats.textContent = `Showing all (${totalRows} total)`;\r\n } else {\r\n stats.textContent = `Found ${totalVisibleRows} matches (${totalRows} total)`;\r\n }\r\n }\r\n\r\n function clearFilter() {\r\n document.getElementById('gradeFilterInput').value = '';\r\n filterGrades();\r\n }\r\n\r\n document.getElementById('gradeFilterInput').addEventListener('keypress', function(e) {\r\n if (e.key === 'Enter') {\r\n filterGrades();\r\n }\r\n });\r\n\r\n window.addEventListener('DOMContentLoaded', function() {\r\n const totalRows = document.querySelectorAll('.data-table tbody tr').length;\r\n document.getElementById('filterStats').textContent = `Showing all (${totalRows} total)`;\r\n });\r\n<\/script>\r\n<\/body>\r\n<\/html>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Steel Grade Comparison Chart | Baowu Steel Steel Grade Comparison Chart Comprehensive cross-reference guide for steel grades across ASTM, EN, […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"site-sidebar-layout":"no-sidebar","site-content-layout":"","ast-site-content-layout":"full-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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overflow-y: visible; } .filter-section { flex-direction: column; align-items: stretch; } .filter-stats { margin-left: 0; text-align: center; } }\r\n @media (max-width: 600px) { .card { padding: 22px 18px; } }\r\n <\/style>\r\n<\/head>\r\n<body>\r\n\r\n<div class=\"page-container\">\r\n\r\n <section class=\"hero-section\">\r\n <h1>Steel Grade Comparison Chart<\/h1>\r\n <p>Comprehensive cross-reference guide for steel grades across ASTM, EN, GB, JIS, and other international standards. Find equivalent materials for carbon steel, stainless steel, alloy steel, pressure vessel steel, and more.<\/p>\r\n <\/section>\r\n\r\n <div class=\"breadcrumb\">\r\n <a href=\"https:\/\/baowu-steel.com\/\">Home<\/a> \u203a\r\n <a href=\"https:\/\/baowu-steel.com\/tools\/\">Tools<\/a> \u203a\r\n Steel Grade Comparison Chart\r\n <\/div>\r\n\r\n <div class=\"content-wrapper\">\r\n <div class=\"three-col-grid\">\r\n\r\n \r\n <aside class=\"left-sidebar\">\r\n <div class=\"contact-card\">\r\n <h3>Contact Us<\/h3>\r\n <p>Get factory-direct pricing. Fast reply guaranteed.<\/p>\r\n <a href=\"mailto:sales@baowu-steel.com\" class=\"cta-btn\">Get Free Quote<\/a>\r\n <div class=\"contact-info\">\r\n <a href=\"tel:+8618764178985\"><span>\ud83d\udcde<\/span> +86 187 6417 8985<\/a>\r\n <a href=\"mailto:sales@baowu-steel.com\"><span>\u2709<\/span> sales@baowu-steel.com<\/a>\r\n <a href=\"https:\/\/wa.me\/8618764178985\" target=\"_blank\" rel=\"noopener\"><span>\ud83d\udcac<\/span> WhatsApp<\/a>\r\n <\/div>\r\n <\/div>\r\n\r\n <div class=\"sidebar-card\">\r\n <h3>Steel Tools<\/h3>\r\n <nav class=\"tool-links\">\r\n <a href=\"https:\/\/baowu-steel.com\/tools\/pipe-weight-calculator\/\"><span class=\"icon\">\ud83d\udccf<\/span> Steel Pipe Weight Calculator<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/steel-plate-weight-calculator\/\"><span class=\"icon\">\ud83d\udcd0<\/span> Steel Plate Weight Calculator<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/steel-coil-weight-calculator\/\"><span class=\"icon\">\u2699\ufe0f<\/span> Steel Coil Weight Calculator<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/galvanized-steel-coating-thickness-chart\/\"><span class=\"icon\">\ud83d\udee1\ufe0f<\/span> Galvanized Steel Coating Thickness Chart<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/steel-grade-comparison-chart\/\" class=\"current\"><span class=\"icon\">\ud83d\udd0d<\/span> Steel Grade Comparison Chart<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/h-beam-weight-chart\/\"><span class=\"icon\">\ud83c\udfd7\ufe0f<\/span> H Beam Weight Chart<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/steel-price-per-ton-today\/\"><span class=\"icon\">\ud83d\udcb0<\/span> Steel Price Per Ton Today<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/steel-pipe-sizes-chart\/\"><span class=\"icon\">\ud83d\udcca<\/span> Steel Pipe Sizes Chart<\/a>\r\n <a href=\"https:\/\/baowu-steel.com\/sheet-metal-gauge-chart\/\"><span class=\"icon\">\ud83d\udccb<\/span> Sheet Metal Gauge Chart<\/a>\r\n <\/nav>\r\n <\/div>\r\n <\/aside>\r\n\r\n \r\n <main class=\"main-content\">\r\n\r\n \r\n <div class=\"filter-section\">\r\n <input type=\"text\" id=\"gradeFilterInput\" class=\"filter-input\" placeholder=\"\ud83d\udd0d Enter grade or standard, e.g. A36, 304, Q345B, S355...\" onkeyup=\"filterGrades()\">\r\n <button class=\"filter-btn\" onclick=\"filterGrades()\">Filter<\/button>\r\n <button class=\"filter-clear\" onclick=\"clearFilter()\">Clear<\/button>\r\n <span class=\"filter-stats\" id=\"filterStats\">Showing all<\/span>\r\n <\/div>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>Carbon Structural Steel<\/h2>\r\n <p class=\"desc\">General-purpose carbon steel for construction, bridges, and machinery. Common grades with minimum yield strength ranging from 205 MPa to 275 MPa.<\/p>\r\n <div class=\"table-container\">\r\n <table class=\"data-table\" id=\"table-carbon\">\r\n <thead><tr><th>ASTM \/ AISI<\/th><th>EN 10025-2<\/th><th>GB\/T 700 \/ GB\/T 1591<\/th><th>JIS G3101<\/th><th>DIN (Old)<\/th><th>Yield Strength (MPa)<\/th><th>Application<\/th><\/tr><\/thead>\r\n <tbody>\r\n <tr><td class=\"grade-highlight\">ASTM A36<\/td><td>S235JR \/ S275JR<\/td><td>Q235B \/ Q275<\/td><td>SS400<\/td><td>St37-2<\/td><td>250<\/td><td>General structures<\/td><\/tr>\r\n <tr><td>ASTM A283 Gr C<\/td><td>S235JR<\/td><td>Q235B<\/td><td>SS400<\/td><td>St37-2<\/td><td>205<\/td><td>Low\/intermediate strength<\/td><\/tr>\r\n <tr><td>ASTM A283 Gr D<\/td><td>S275JR<\/td><td>Q275<\/td><td>SM400A<\/td><td>St44-2<\/td><td>230<\/td><td>Structural plates<\/td><\/tr>\r\n <tr><td>ASTM A529 Gr 50<\/td><td>S355JR<\/td><td>Q355B<\/td><td>SM490A<\/td><td>St52-3<\/td><td>345<\/td><td>Building frames<\/td><\/tr>\r\n <tr><td>ASTM A573 Gr 65<\/td><td>S355J2<\/td><td>Q355D<\/td><td>SM490B<\/td><td>\u2014<\/td><td>355<\/td><td>Improved toughness<\/td><\/tr>\r\n <tr><td>ASTM A709 Gr 36<\/td><td>S235JR<\/td><td>Q235B<\/td><td>SS400<\/td><td>St37-2<\/td><td>250<\/td><td>Bridge steel (36 ksi)<\/td><\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>High Strength Low Alloy (HSLA) Structural Steel<\/h2>\r\n <p class=\"desc\">HSLA steels offer higher strength-to-weight ratios with improved corrosion resistance and weldability. Common yield strength levels: 345\u2013450 MPa.<\/p>\r\n <div class=\"table-container\">\r\n <table class=\"data-table\" id=\"table-hsla\">\r\n <thead><tr><th>ASTM \/ ASME<\/th><th>EN 10025-2 \/ EN 10025-6<\/th><th>GB\/T 1591 \/ GB\/T 16270<\/th><th>JIS G3106<\/th><th>DIN (Old)<\/th><th>Yield Strength (MPa)<\/th><th>Application<\/th><\/tr><\/thead>\r\n <tbody>\r\n <tr><td class=\"grade-highlight\">ASTM A572 Gr 50<\/td><td>S355JR \/ S355J2<\/td><td>Q345B \/ Q355B<\/td><td>SM490B<\/td><td>St52-3<\/td><td>345<\/td><td>Bridges, buildings, heavy equipment<\/td><\/tr>\r\n <tr><td>ASTM A572 Gr 55<\/td><td>S420N \/ S420M<\/td><td>Q420B<\/td><td>SM520<\/td><td>\u2014<\/td><td>380<\/td><td>Higher strength structures<\/td><\/tr>\r\n <tr><td class=\"grade-highlight\">ASTM A572 Gr 65<\/td><td>S460Q \/ S460QL<\/td><td>Q460C \/ Q460D<\/td><td>SM570<\/td><td>\u2014<\/td><td>450<\/td><td>Cranes, mining machinery<\/td><\/tr>\r\n <tr><td>ASTM A633 Gr C<\/td><td>S355N \/ S355NL<\/td><td>Q355E<\/td><td>SM490C<\/td><td>\u2014<\/td><td>345<\/td><td>Low-temperature toughness<\/td><\/tr>\r\n <tr><td>ASTM A656 Gr 80<\/td><td>S550Q<\/td><td>Q550D<\/td><td>\u2014<\/td><td>\u2014<\/td><td>550<\/td><td>Heavy machinery, truck frames<\/td><\/tr>\r\n <tr><td class=\"grade-highlight\">ASTM A514 Gr Q \/ S<\/td><td>S690QL \/ S690QL1<\/td><td>Q690D \/ Q690E<\/td><td>\u2014<\/td><td>\u2014<\/td><td>690<\/td><td>Crane booms, high-stress structures<\/td><\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>Pressure Vessel Steel<\/h2>\r\n <p class=\"desc\">Steel plates for boilers, pressure vessels, and storage tanks. Designed for medium to elevated temperature service with guaranteed impact toughness.<\/p>\r\n <div class=\"table-container\">\r\n <table class=\"data-table\" id=\"table-pv\">\r\n <thead><tr><th>ASTM \/ ASME<\/th><th>EN 10028-2<\/th><th>GB 713<\/th><th>JIS G3115 \/ G3118<\/th><th>DIN (Old)<\/th><th>Yield Strength (MPa)<\/th><th>Service Condition<\/th><\/tr><\/thead>\r\n <tbody>\r\n <tr><td>ASTM A285 Gr C<\/td><td>P235GH<\/td><td>Q245R<\/td><td>SPV235<\/td><td>HI<\/td><td>205<\/td><td>Low-pressure vessels<\/td><\/tr>\r\n <tr><td class=\"grade-highlight\">ASTM A516 Gr 70<\/td><td>P355GH<\/td><td>Q345R<\/td><td>SPV355<\/td><td>StE355<\/td><td>260<\/td><td>Moderate\/low temp pressure vessels<\/td><\/tr>\r\n <tr><td>ASTM A537 Cl 1<\/td><td>P355NH<\/td><td>Q370R<\/td><td>SPV450<\/td><td>\u2014<\/td><td>345<\/td><td>Normalized, moderate temp<\/td><\/tr>\r\n <tr><td>ASTM A387 Gr 11 Cl 2<\/td><td>13CrMo4-5<\/td><td>15CrMoR<\/td><td>SCMV 430<\/td><td>13CrMo44<\/td><td>310<\/td><td>Elevated temp (Cr\u2011Mo steel)<\/td><\/tr>\r\n <tr><td>ASTM A387 Gr 22 Cl 2<\/td><td>10CrMo9-10<\/td><td>12Cr2Mo1R<\/td><td>SCMV 4<\/td><td>10CrMo910<\/td><td>310<\/td><td>High temp, hydrogen service<\/td><\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>Weathering \/ Corrosion Resistant Steel<\/h2>\r\n <p class=\"desc\">Also known as corten steel, these grades develop a stable rust-like appearance for atmospheric corrosion resistance. No painting required.<\/p>\r\n <div class=\"table-container\">\r\n <table class=\"data-table\" id=\"table-weathering\">\r\n <thead><tr><th>ASTM<\/th><th>EN 10025-5<\/th><th>GB\/T 4171<\/th><th>JIS G3125<\/th><th>Yield Strength (MPa)<\/th><th>Application<\/th><\/tr><\/thead>\r\n <tbody>\r\n <tr><td>ASTM A588 Gr A \/ B<\/td><td>S355J2W \/ S355K2W<\/td><td>Q355NHC<\/td><td>SPA\u2011H<\/td><td>345<\/td><td>Bridges, transmission towers<\/td><\/tr>\r\n <tr><td>ASTM A242 Type 1<\/td><td>S355J0WP<\/td><td>Q355GNH<\/td><td>SPA\u2011C<\/td><td>345<\/td><td>Architectural structures<\/td><\/tr>\r\n <tr><td>ASTM A606 Type 4<\/td><td>S355J2W<\/td><td>09CuPCrNi\u2011A<\/td><td>\u2014<\/td><td>345<\/td><td>Rolled sheets, building panels<\/td><\/tr>\r\n <tr><td>ASTM A709 Gr 50W<\/td><td>S355J2W<\/td><td>Q355NHC<\/td><td>SMA490AW<\/td><td>345<\/td><td>Weathering bridge steel<\/td><\/tr>\r\n <tr><td>\u2014<\/td><td>S235J2W<\/td><td>Q235NHC<\/td><td>\u2014<\/td><td>235<\/td><td>Light structural applications<\/td><\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>Wear-Resistant \/ Abrasion Resistant Steel<\/h2>\r\n <p class=\"desc\">High-hardness steel plates for mining, earthmoving, and material handling equipment. Hardness ranges from 400 HBW to 500 HBW.<\/p>\r\n <div class=\"table-container\">\r\n <table class=\"data-table\" id=\"table-wear\">\r\n <thead><tr><th>ASTM \/ Industry<\/th><th>SSAB Hardox\u00ae<\/th><th>GB\/T 24186<\/th><th>JIS \/ JFE<\/th><th>Hardness (HBW)<\/th><th>Application<\/th><\/tr><\/thead>\r\n <tbody>\r\n <tr><td>AR400<\/td><td>Hardox 400<\/td><td class=\"grade-highlight\">NM400<\/td><td>JFE\u2011EH400<\/td><td>370\u2013430<\/td><td>Buckets, dump truck bodies<\/td><\/tr>\r\n <tr><td>AR450<\/td><td>Hardox 450<\/td><td class=\"grade-highlight\">NM450<\/td><td>JFE\u2011EH450<\/td><td>425\u2013475<\/td><td>Chutes, crusher liners<\/td><\/tr>\r\n <tr><td>AR500<\/td><td>Hardox 500<\/td><td class=\"grade-highlight\">NM500<\/td><td>JFE\u2011EH500<\/td><td>470\u2013530<\/td><td>Heavy abrasion, wear plates<\/td><\/tr>\r\n <tr><td>\u2014<\/td><td>Hardox 550<\/td><td>NM550<\/td><td>\u2014<\/td><td>525\u2013575<\/td><td>Extreme wear applications<\/td><\/tr>\r\n <tr><td>T\u20111 (A514)<\/td><td>Hardox 400<\/td><td>NM400<\/td><td>WEL\u2011TEN<\/td><td>~400<\/td><td>Structural + wear resistance<\/td><\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>Stainless Steel (Austenitic & Duplex)<\/h2>\r\n <p class=\"desc\">Common stainless steel grades for corrosion-resistant applications in chemical, food processing, marine, and architectural industries.<\/p>\r\n <div class=\"table-container\">\r\n <table class=\"data-table\" id=\"table-ss\">\r\n <thead><tr><th>ASTM A240 \/ AISI<\/th><th>EN 10088-2 (Name)<\/th><th>EN 10088-2 (Number)<\/th><th>GB\/T 3280<\/th><th>JIS G4304<\/th><th>Typical Application<\/th><\/tr><\/thead>\r\n <tbody>\r\n <tr><td class=\"grade-highlight\">304<\/td><td>X5CrNi18\u201110<\/td><td>1.4301<\/td><td>06Cr19Ni10<\/td><td>SUS304<\/td><td>Food equipment, kitchenware<\/td><\/tr>\r\n <tr><td class=\"grade-highlight\">304L<\/td><td>X2CrNi19\u201111<\/td><td>1.4306 \/ 1.4307<\/td><td>022Cr19Ni10<\/td><td>SUS304L<\/td><td>Welded structures (low carbon)<\/td><\/tr>\r\n <tr><td class=\"grade-highlight\">316<\/td><td>X5CrNiMo17\u201112\u20112<\/td><td>1.4401<\/td><td>06Cr17Ni12Mo2<\/td><td>SUS316<\/td><td>Marine, chemical processing<\/td><\/tr>\r\n <tr><td>316L<\/td><td>X2CrNiMo17\u201112\u20112<\/td><td>1.4404<\/td><td>022Cr17Ni12Mo2<\/td><td>SUS316L<\/td><td>Pharmaceutical, welded corrosion resistance<\/td><\/tr>\r\n <tr><td>321<\/td><td>X6CrNiTi18\u201110<\/td><td>1.4541<\/td><td>07Cr18Ni11Ti<\/td><td>SUS321<\/td><td>High temperature, stabilized<\/td><\/tr>\r\n <tr><td>310S<\/td><td>X8CrNi25\u201121<\/td><td>1.4845<\/td><td>06Cr25Ni20<\/td><td>SUS310S<\/td><td>Furnace parts, heat exchangers<\/td><\/tr>\r\n <tr><td>2205 (Duplex)<\/td><td>X2CrNiMoN22\u20115\u20113<\/td><td>1.4462<\/td><td>022Cr22Ni5Mo3N<\/td><td>SUS329J4L<\/td><td>Oil & gas, chemical tanks<\/td><\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>Alloy Steel (Quenched & Tempered \/ Carburizing)<\/h2>\r\n <p class=\"desc\">Medium-carbon alloy steels for machinery parts, gears, shafts, and high-strength fasteners. Heat treatable to achieve desired mechanical properties.<\/p>\r\n <div class=\"table-container\">\r\n <table class=\"data-table\" id=\"table-alloy\">\r\n <thead><tr><th>ASTM \/ AISI \/ SAE<\/th><th>EN 10083-3<\/th><th>GB\/T 3077<\/th><th>JIS G4105 \/ G4106<\/th><th>DIN<\/th><th>Typical Application<\/th><\/tr><\/thead>\r\n <tbody>\r\n <tr><td>4130<\/td><td>25CrMo4 (1.7218)<\/td><td>30CrMo<\/td><td>SCM430<\/td><td>25CrMo4<\/td><td>Aircraft tubing, bike frames<\/td><\/tr>\r\n <tr><td class=\"grade-highlight\">4140<\/td><td>42CrMo4 (1.7225)<\/td><td>42CrMo<\/td><td>SCM440<\/td><td>42CrMo4<\/td><td>Gears, shafts, spindles<\/td><\/tr>\r\n <tr><td>4145<\/td><td>42CrMoS4 (1.7227)<\/td><td>42CrMo<\/td><td>SCM445<\/td><td>\u2014<\/td><td>Heavy-duty shafts, drill collars<\/td><\/tr>\r\n <tr><td>4340<\/td><td>36CrNiMo4 (1.6511)<\/td><td>40CrNiMoA<\/td><td>SNCM439<\/td><td>36CrNiMo4<\/td><td>Landing gear, heavy forgings<\/td><\/tr>\r\n <tr><td>8620<\/td><td>20NiCrMo2\u20112 (1.6523)<\/td><td>20CrNiMo<\/td><td>SNCM220<\/td><td>21NiCrMo2<\/td><td>Carburized gears, camshafts<\/td><\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>Line Pipe Steel (API 5L \/ ISO 3183)<\/h2>\r\n <p class=\"desc\">High-strength steel for oil, gas, and water transmission pipelines. Grades indicate minimum yield strength in ksi or MPa.<\/p>\r\n <div class=\"table-container\">\r\n <table class=\"data-table\" id=\"table-linepipe\">\r\n <thead><tr><th>API 5L (PSL 1\/2)<\/th><th>ISO 3183 \/ EN 10208-2<\/th><th>GB\/T 9711<\/th><th>Yield Strength (MPa)<\/th><th>Yield Strength (ksi)<\/th><th>Application<\/th><\/tr><\/thead>\r\n <tbody>\r\n <tr><td>X42 \/ L290<\/td><td>L290NB \/ L290MB<\/td><td>L290<\/td><td>290<\/td><td>42<\/td><td>Low-pressure gathering lines<\/td><\/tr>\r\n <tr><td class=\"grade-highlight\">X52 \/ L360<\/td><td>L360NB \/ L360QB<\/td><td>L360<\/td><td>360<\/td><td>52<\/td><td>Cross-country pipelines<\/td><\/tr>\r\n <tr><td>X56 \/ L390<\/td><td>L390NB \/ L390QB<\/td><td>L390<\/td><td>390<\/td><td>56<\/td><td>Offshore risers<\/td><\/tr>\r\n <tr><td class=\"grade-highlight\">X60 \/ L415<\/td><td>L415NB \/ L415QB<\/td><td>L415<\/td><td>415<\/td><td>60<\/td><td>High-pressure gas transmission<\/td><\/tr>\r\n <tr><td class=\"grade-highlight\">X65 \/ L450<\/td><td>L450QB \/ L450MB<\/td><td>L450<\/td><td>450<\/td><td>65<\/td><td>Major oil & gas trunklines<\/td><\/tr>\r\n <tr><td>X70 \/ L485<\/td><td>L485QB \/ L485MB<\/td><td>L485<\/td><td>485<\/td><td>70<\/td><td>High-pressure long-distance pipelines<\/td><\/tr>\r\n <tr><td>X80 \/ L555<\/td><td>L555QB \/ L555MB<\/td><td>L555<\/td><td>555<\/td><td>80<\/td><td>Arctic pipelines, high-strength applications<\/td><\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>Low Temperature & Cryogenic Steel<\/h2>\r\n <p class=\"desc\">Steel grades with guaranteed impact toughness at sub-zero temperatures, for LNG storage, cryogenic piping, and arctic structures.<\/p>\r\n <div class=\"table-container\">\r\n <table class=\"data-table\" id=\"table-cryo\">\r\n <thead><tr><th>ASTM \/ ASME<\/th><th>EN 10028-4 \/ EN 10216-3<\/th><th>GB\/T 3531 \/ GB 3531<\/th><th>JIS G3127 \/ G3460<\/th><th>Min. Service Temp (\u00b0C)<\/th><th>Application<\/th><\/tr><\/thead>\r\n <tbody>\r\n <tr><td class=\"grade-highlight\">ASTM A333 Gr 6<\/td><td>P265NL \/ 16Mo3<\/td><td>16MnDR \/ 09MnNiDR<\/td><td>STPL 39<\/td><td>\u201145 \u00b0C<\/td><td>LNG piping, low\u2011temp vessels<\/td><\/tr>\r\n <tr><td>ASTM A333 Gr 3<\/td><td>12Ni14<\/td><td>08Ni3DR<\/td><td>STPL 46<\/td><td>\u2011100 \u00b0C<\/td><td>Ethylene storage<\/td><\/tr>\r\n <tr><td>ASTM A333 Gr 8<\/td><td>X8Ni9<\/td><td>06Ni9DR<\/td><td>STPL 690<\/td><td>\u2011195 \u00b0C<\/td><td>LNG tanks, cryogenic service<\/td><\/tr>\r\n <tr><td>ASTM A203 Gr A \/ B<\/td><td>11MnNi5\u20113 \/ 13MnNi6\u20113<\/td><td>15MnNiDR \/ 12MnNiVR<\/td><td>SL2N26 \/ SL3N28<\/td><td>\u201160 \u00b0C<\/td><td>Low\u2011temperature pressure vessels<\/td><\/tr>\r\n <tr><td>ASTM A353 \/ A553 Type I<\/td><td>X7Ni9 \/ X8Ni9<\/td><td>06Ni9DR<\/td><td>SL9N60<\/td><td>\u2011195 \u00b0C<\/td><td>LNG storage tanks<\/td><\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>How to Use This Comparison Chart<\/h2>\r\n <ol style=\"list-style: none; counter-reset: step; margin-left: 0; padding-left: 0;\">\r\n <li style=\"counter-increment: step; position: relative; padding: 14px 14px 14px 56px; background: #f8fafc; border-radius: 10px; margin-bottom: 10px; border: 1px solid #e8eef5;\"><span style=\"position: absolute; left: 14px; top: 50%; transform: translateY(-50%); width: 30px; height: 30px; background: linear-gradient(135deg, #0c3483, #4facfe); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 13px;\">1<\/span><strong>Identify your base standard<\/strong> \u2014 Locate your known grade under ASTM, EN, GB, or JIS columns.<\/li>\r\n <li style=\"counter-increment: step; position: relative; padding: 14px 14px 14px 56px; background: #f8fafc; border-radius: 10px; margin-bottom: 10px; border: 1px solid #e8eef5;\"><span style=\"position: absolute; left: 14px; top: 50%; transform: translateY(-50%); width: 30px; height: 30px; background: linear-gradient(135deg, #0c3483, #4facfe); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 13px;\">2<\/span><strong>Find equivalent grades<\/strong> \u2014 Read across the same row to find equivalent materials in other standards.<\/li>\r\n <li style=\"counter-increment: step; position: relative; padding: 14px 14px 14px 56px; background: #f8fafc; border-radius: 10px; margin-bottom: 10px; border: 1px solid #e8eef5;\"><span style=\"position: absolute; left: 14px; top: 50%; transform: translateY(-50%); width: 30px; height: 30px; background: linear-gradient(135deg, #0c3483, #4facfe); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 13px;\">3<\/span><strong>Check mechanical properties<\/strong> \u2014 Verify yield strength and impact requirements match your project specifications.<\/li>\r\n <li style=\"counter-increment: step; position: relative; padding: 14px 14px 14px 56px; background: #f8fafc; border-radius: 10px; margin-bottom: 10px; border: 1px solid #e8eef5;\"><span style=\"position: absolute; left: 14px; top: 50%; transform: translateY(-50%); width: 30px; height: 30px; background: linear-gradient(135deg, #0c3483, #4facfe); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 13px;\">4<\/span><strong>Confirm with standards<\/strong> \u2014 Always refer to the current standard documents (ASTM, EN, GB, JIS) for exact chemical and mechanical requirements.<\/li>\r\n <\/ol>\r\n <\/section>\r\n\r\n \r\n <section class=\"card\">\r\n <h2>Frequently Asked Questions<\/h2>\r\n\r\n <div class=\"faq open\">\r\n <div class=\"faq-question\" onclick=\"toggleFAQ(this)\">What does \"equivalent\" mean in steel grade comparison?<\/div>\r\n <div class=\"faq-answer\">\"Equivalent\" means the steel grades have similar chemical composition and mechanical properties, and can often be substituted for general applications. However, equivalents are not identical copies \u2014 subtle differences in alloying elements, testing requirements, and impact temperatures exist. Always consult the specific project's governing code and material requisition before substitution.<\/div>\r\n <\/div>\r\n <div class=\"faq\">\r\n <div class=\"faq-question\" onclick=\"toggleFAQ(this)\">What is the most common structural steel grade worldwide?<\/div>\r\n <div class=\"faq-answer\">ASTM A36 (USA), S235JR\/S275JR (Europe), Q235B (China), and SS400 (Japan) are the most common general-purpose structural steel grades. A36 has a minimum yield strength of 250 MPa, while S275JR has 275 MPa. They are functionally interchangeable for most structural applications.<\/div>\r\n <\/div>\r\n <div class=\"faq\">\r\n <div class=\"faq-question\" onclick=\"toggleFAQ(this)\">What is the difference between S355JR and S355J2?<\/div>\r\n <div class=\"faq-answer\">Both are EN 10025-2 structural steels with 355 MPa minimum yield strength. The difference lies in impact toughness: S355JR guarantees 27 J at 20 \u00b0C, while S355J2 guarantees 27 J at \u201120 \u00b0C. For cold climate applications, S355J2 is preferred.<\/div>\r\n <\/div>\r\n <div class=\"faq\">\r\n <div class=\"faq-question\" onclick=\"toggleFAQ(this)\">Is Q345B the same as S355JR?<\/div>\r\n <div class=\"faq-answer\">Q345B and S355JR are very similar low-alloy structural steels with comparable strength levels (~345\u2013355 MPa yield). Q345B is the Chinese standard, S355JR is the European standard. Both are widely used as equivalents to ASTM A572 Gr 50. Chemical composition ranges differ slightly \u2014 Q345B has lower max phosphorus and sulfur limits.<\/div>\r\n <\/div>\r\n <div class=\"faq\">\r\n <div class=\"faq-question\" onclick=\"toggleFAQ(this)\">What is the ASTM equivalent of 42CrMo4?<\/div>\r\n <div class=\"faq-answer\">42CrMo4 (EN 10083-3, 1.7225) is equivalent to AISI\/SAE 4140. The Japanese equivalent is SCM440, and the Chinese equivalent is 42CrMo (GB\/T 3077). These grades are essentially interchangeable for most heat-treated machinery parts.<\/div>\r\n <\/div>\r\n <div class=\"faq\">\r\n <div class=\"faq-question\" onclick=\"toggleFAQ(this)\">How do I convert API 5L X-grade to ISO 3183 L\u2011grade?<\/div>\r\n <div class=\"faq-answer\">ISO 3183 uses the same grade designation logic as API 5L but with \"L\" instead of \"X\" and yield strength rounded to the nearest 0 or 5 MPa. For example: X52 = L360 (360 MPa), X60 = L415 (415 MPa), X65 = L450 (450 MPa), X70 = L485 (485 MPa).<\/div>\r\n <\/div>\r\n <div class=\"faq\">\r\n <div class=\"faq-question\" onclick=\"toggleFAQ(this)\">What is the difference between 304 and 304L stainless steel?<\/div>\r\n <div class=\"faq-answer\">304L has lower carbon content (max 0.03%) compared to 304 (max 0.08%). This reduces carbide precipitation during welding, improving intergranular corrosion resistance in welded structures. 304L corresponds to EN 1.4306\/1.4307, while 304 corresponds to EN 1.4301.<\/div>\r\n <\/div>\r\n <div class=\"faq\">\r\n <div class=\"faq-question\" onclick=\"toggleFAQ(this)\">What is NM400 steel equivalent to?<\/div>\r\n <div class=\"faq-answer\">NM400 (Chinese standard GB\/T 24186) is equivalent to AR400 (ASTM) and Hardox 400 (SSAB). All provide Brinell hardness in the range of 370\u2013430 HBW and are used for wear-resistant applications like buckets, chutes, and dump truck bodies.<\/div>\r\n <\/div>\r\n <\/section>\r\n <\/main>\r\n\r\n \r\n <aside class=\"right-sidebar\">\r\n\r\n <div class=\"sidebar-card\">\r\n <h3>Legend<\/h3>\r\n <ul class=\"quick-ref\">\r\n <li><span><span class=\"legend-badge legend-astm\">ASTM<\/span> American<\/span><span class=\"value\">USA<\/span><\/li>\r\n <li><span><span class=\"legend-badge legend-en\">EN<\/span> European<\/span><span class=\"value\">EU<\/span><\/li>\r\n <li><span><span class=\"legend-badge legend-gb\">GB<\/span> Chinese<\/span><span class=\"value\">China<\/span><\/li>\r\n <li><span><span class=\"legend-badge legend-jis\">JIS<\/span> Japanese<\/span><span class=\"value\">Japan<\/span><\/li>\r\n <li><span>DIN<\/span><span class=\"value\">Germany (Old)<\/span><\/li>\r\n <li><span>ISO<\/span><span class=\"value\">International<\/span><\/li>\r\n <\/ul>\r\n <\/div>\r\n\r\n <div class=\"sidebar-card\">\r\n <h3>Quick Grade Lookup<\/h3>\r\n <ul class=\"quick-ref\">\r\n <li><span>A36 \u2248 S235JR<\/span><span class=\"value\">Q235B<\/span><\/li>\r\n <li><span>A572 Gr 50 \u2248 S355JR<\/span><span class=\"value\">Q345B<\/span><\/li>\r\n <li><span>A514 \u2248 S690QL<\/span><span class=\"value\">Q690D<\/span><\/li>\r\n <li><span>A516 Gr 70 \u2248 P355GH<\/span><span class=\"value\">Q345R<\/span><\/li>\r\n <li><span>304 \u2248 1.4301<\/span><span class=\"value\">SUS304<\/span><\/li>\r\n <li><span>316 \u2248 1.4401<\/span><span class=\"value\">SUS316<\/span><\/li>\r\n <li><span>4140 \u2248 42CrMo4<\/span><span class=\"value\">SCM440<\/span><\/li>\r\n <li><span>X60 \u2248 L415<\/span><span class=\"value\">L415<\/span><\/li>\r\n <\/ul>\r\n <\/div>\r\n\r\n <div class=\"sidebar-card\">\r\n <h3>Key Standards<\/h3>\r\n <ul class=\"quick-ref\">\r\n <li><span>Structural (Carbon)<\/span><span class=\"value\">ASTM A36, EN 10025\u20112<\/span><\/li>\r\n <li><span>Structural (HSLA)<\/span><span class=\"value\">ASTM A572, EN 10025\u20116<\/span><\/li>\r\n <li><span>Pressure Vessel<\/span><span class=\"value\">ASTM A516, EN 10028\u20112<\/span><\/li>\r\n <li><span>Stainless Steel<\/span><span class=\"value\">ASTM A240, EN 10088\u20112<\/span><\/li>\r\n <li><span>Line Pipe<\/span><span class=\"value\">API 5L, ISO 3183<\/span><\/li>\r\n <li><span>Alloy Steel<\/span><span class=\"value\">ASTM A29, EN 10083\u20113<\/span><\/li>\r\n <li><span>Weathering<\/span><span class=\"value\">ASTM A588, EN 10025\u20115<\/span><\/li>\r\n <li><span>Wear\u2011Resistant<\/span><span class=\"value\">GB\/T 24186<\/span><\/li>\r\n <\/ul>\r\n <\/div>\r\n\r\n <div class=\"sidebar-card\">\r\n <h3>Yield Strength Conversion<\/h3>\r\n <ul class=\"quick-ref\">\r\n <li><span>36 ksi<\/span><span class=\"value\">250 MPa<\/span><\/li>\r\n <li><span>50 ksi<\/span><span class=\"value\">345 MPa<\/span><\/li>\r\n <li><span>60 ksi<\/span><span class=\"value\">415 MPa<\/span><\/li>\r\n <li><span>65 ksi<\/span><span class=\"value\">450 MPa<\/span><\/li>\r\n <li><span>80 ksi<\/span><span class=\"value\">550 MPa<\/span><\/li>\r\n <li><span>100 ksi<\/span><span class=\"value\">690 MPa<\/span><\/li>\r\n <li><span>1 MPa = 0.145 ksi<\/span><span class=\"value\">1 ksi = 6.895 MPa<\/span><\/li>\r\n <\/ul>\r\n <\/div>\r\n\r\n <div class=\"sidebar-card\">\r\n <h3>Important Notes<\/h3>\r\n <div class=\"tip-box\">\r\n <strong>Equivalent \u2260 Interchangeable<\/strong>\r\n This chart provides reference equivalents for general comparison only. Chemical composition ranges, mechanical properties, and testing requirements may vary between standards. Always verify with current standard documents and confirm suitability with your engineer before substitution.\r\n <\/div>\r\n <\/div>\r\n <\/aside>\r\n <\/div>\r\n <\/div>\r\n<\/div>\r\n\r\n<script>\r\n function toggleFAQ(el) {\r\n el.parentElement.classList.toggle('open');\r\n }\r\n\r\n function filterGrades() {\r\n const input = document.getElementById('gradeFilterInput');\r\n const filterText = input.value.trim().toUpperCase();\r\n const allTables = document.querySelectorAll('.data-table tbody');\r\n let totalVisibleRows = 0;\r\n let totalRows = 0;\r\n\r\n allTables.forEach(tbody => {\r\n const rows = tbody.querySelectorAll('tr');\r\n rows.forEach(row => {\r\n totalRows++;\r\n const rowText = row.textContent.toUpperCase();\r\n if (filterText === '' || rowText.includes(filterText)) {\r\n row.style.display = '';\r\n totalVisibleRows++;\r\n } else {\r\n row.style.display = 'none';\r\n }\r\n });\r\n });\r\n\r\n const stats = document.getElementById('filterStats');\r\n if (filterText === 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