# Steel Standart

> Steel grade, standard and equivalence reference. 52 grades (EN, ASTM/AISI, JIS, GB, DIN, BS, GOST, IS) with composition, mechanical properties by thickness/condition, heat treatment, superseded names and graded cross-references (identical / near / functional). Values checked against the standard edition named on each page. Data edition September 2026.

## Key pages

- [Steel grades chart](https://steelstandart.com/steel-grades/): every grade by system and family
- [Standards index](https://steelstandart.com/standards/)
- [Comparisons](https://steelstandart.com/compare/)
- [Material numbers](https://steelstandart.com/number/)
- [Full text dump](https://steelstandart.com/llms-full.txt)
- [Grade list JSON](https://steelstandart.com/grades.json)

## Grades

- [1.2379 (1.2379)](https://steelstandart.com/grade/1-2379/): 1.2379 (X153CrMoV12) is the 12 % Cr / 1.5 % C cold-work tool steel — the European D2. Hardens to 58–62 HRC, high wear resistance, dimensionally stable. Composition, heat treatment, hardness and D2/SKD11/Cr12MoV equivalents.
- [1.4301 (1.4301)](https://steelstandart.com/grade/1-4301/): 1.4301 (X5CrNi18-10, V2A) is the EN 10088 austenitic stainless with 18 % Cr, 8–10.5 % Ni: 210 MPa yield, 520–720 MPa tensile, non-magnetic. Composition, properties and the 304 / SUS304 equivalence explained.
- [1.4305 (1.4305)](https://steelstandart.com/grade/1-4305/): 1.4305 (X8CrNiS18-9) is the EN free-machining 303: 18 % Cr, 8–10 % Ni, 0.15–0.35 % S. 190 MPa yield, 500–750 MPa tensile, machinability ~80 % of 1.4301. Data, limits and the 303/SUS303 equivalence.
- [1.4404 (1.4404)](https://steelstandart.com/grade/1-4404/): 1.4404 (X2CrNiMo17-12-2) is the EN low-carbon 316L: 16.5–18.5 % Cr, 10–13 % Ni, 2–2.5 % Mo, ≤ 0.03 % C. 220 MPa yield, 520–670 MPa tensile, PREN ≈ 24. Composition, properties, 316L/SUS316L equivalents.
- [1.4462 (1.4462)](https://steelstandart.com/grade/1-4462/): 1.4462 (X2CrNiMoN22-5-3) is the standard duplex 2205 in EN 10088: 22 % Cr, 5 % Ni, 3 % Mo, 0.15 % N. 450–460 MPa yield, 640–840 MPa tensile, PREN ≈ 35. Data, limits and the 2205/S31803/S32205 equivalence.
- [1.4571 (1.4571)](https://steelstandart.com/grade/1-4571/): 1.4571 (X6CrNiMoTi17-12-2, 316Ti) is the Ti-stabilized 316 of EN 10088: 2–2.5 % Mo, Ti ≥ 5×C. 220–240 MPa yield, 520–690 MPa tensile, PREN ≈ 24, creep-resistant to 550 °C. Data and 316Ti/SUS316Ti equivalents.
- [1018 (G10180)](https://steelstandart.com/grade/1018/): 1018 steel (AISI/SAE 1018, UNS G10180): 0.18 % C, 0.75 % Mn low-carbon bar. Cold-drawn ≈ 370 MPa (54 ksi) yield / 440 MPa (64 ksi) tensile; hot-rolled ≈ 220/400 MPa. Composition, properties, case hardening, 1018 vs A36 vs 4140, C15/C20/S15C equivalents.
- [1045 (G10450)](https://steelstandart.com/grade/1045/): 1045 steel (AISI/SAE 1045, UNS G10450): 0.45 % C medium-carbon steel. Hot-rolled ≈ 310 MPa yield / 565 MPa tensile; cold-drawn ≈ 530/625 MPa; flame/induction-hardens to 55–58 HRC. Composition, heat treatment, 1045 vs 4140, C45/S45C/45# equivalents.
- [1095 (G10950)](https://steelstandart.com/grade/1095/): 1095 steel (AISI/SAE 1095, UNS G10950): 0.95 % C high-carbon steel for knives, springs and blades. Hardens to 64–66 HRC; used at 56–60 HRC (blades) or 44–50 HRC (springs). Composition, heat treatment, 1095 vs 1084/O1/5160, C100S/SK4/CK101 equivalents.
- [16MnCr5 (1.7131)](https://steelstandart.com/grade/16mncr5/): 16MnCr5 (1.7131) is the Mn-Cr case-hardening steel of EN 10084: 0.16 % C, carburized to 58–62 HRC surface with 780–1080 MPa core. Composition, heat treatment, 5115/SCr415/20MnCr5 equivalents.
- [16Mo3 (1.5415)](https://steelstandart.com/grade/16mo3/): 16Mo3 (1.5415, ex 15Mo3) is the 0.3 % Mo creep-resisting pressure steel of EN 10028-2: 275 MPa yield, 440–590 MPa tensile, Rp0.2 guaranteed to 500 °C. Composition, temperature table, A204/SA-204 and 15Mo3 equivalents.
- [17-4 PH (S17400)](https://steelstandart.com/grade/17-4ph/): 17-4 PH stainless steel (UNS S17400, Type 630, EN 1.4542): 15–17.5 % Cr, 3–5 % Ni, 3–5 % Cu, Nb. Age-hardened H900 to 1170 MPa yield / 1310 MPa tensile, 40–47 HRC; H1150 for toughness. Heat-treatment conditions, properties, 1.4542/SUS630 equivalents.
- [2205 (S32205)](https://steelstandart.com/grade/2205/): 2205 duplex stainless steel (UNS S32205 / S31803, F51/F60): 22 % Cr, 5 % Ni, 3 % Mo, 0.16 % N. 450 MPa (65 ksi) yield, 655 MPa (95 ksi) tensile, PREN ≥ 35, magnetic. Composition, S31803 vs S32205, properties, 1.4462/SUS329J3L equivalents.
- [304 (S30400)](https://steelstandart.com/grade/304/): 304 stainless steel (UNS S30400, 18-8): 18 % Cr, 8 % Ni, ≤ 0.08 % C. 205 MPa (30 ksi) yield, 515 MPa (75 ksi) tensile, non-magnetic, food-safe. Composition, properties, 304 vs 304L vs 316, and 1.4301/SUS304 equivalents.
- [310 (S31000)](https://steelstandart.com/grade/310/): 310 / 310S stainless steel (UNS S31000 / S31008, EN 1.4845): 24–26 % Cr, 19–22 % Ni for continuous service to 1100 °C. 205 MPa yield, 515 MPa tensile. Composition, oxidation limits, creep, 310 vs 309 vs 321, 1.4845/SUS310S equivalents.
- [316 (S31600)](https://steelstandart.com/grade/316/): 316 stainless steel (UNS S31600) and 316L (S31603): 16–18 % Cr, 10–14 % Ni, 2–3 % Mo. 205 MPa (30 ksi) yield, 515 MPa (75 ksi) tensile, PREN ≈ 24, the marine grade. Composition, properties, 316 vs 316L vs 304, 1.4401/1.4404 equivalents.
- [321 (S32100)](https://steelstandart.com/grade/321/): 321 stainless steel (UNS S32100, EN 1.4541): titanium-stabilized 18-8 for 425–870 °C service without sensitization. 205 MPa yield, 515 MPa tensile, creep-rated as 321H. Composition, high-temperature properties, 321 vs 304/347, 1.4541 equivalents.
- [410 (S41000)](https://steelstandart.com/grade/410/): 410 stainless steel (UNS S41000, EN 1.4006): 11.5–13.5 % Cr martensitic, hardenable to 35–45 HRC. Annealed 205 MPa yield / 450 MPa tensile; hardened & tempered to 1100+ MPa. Composition, heat treatment, 410 vs 420 vs 430, 1.4006/SUS410 equivalents.
- [4130 (G41300)](https://steelstandart.com/grade/4130/): 4130 steel (AISI/SAE 4130, UNS G41300): 0.30 % C, 1 % Cr, 0.2 % Mo weldable chromoly. Normalized 435 MPa yield / 670 MPa tensile; Q&T to 1000+ MPa. Composition, heat treatment, welding, 4130 vs 4140, 25CrMo4/SCM430 equivalents.
- [4140 (G41400)](https://steelstandart.com/grade/4140/): 4140 steel (AISI/SAE 4140, UNS G41400): 0.40 % C, 1 % Cr, 0.2 % Mo chromoly. Annealed 415 MPa yield / 655 MPa tensile; Q&T to 28–32 HRC (pre-hard) or 50+ HRC. Composition, heat treatment, hardness by temper, 4140 vs 4130/1045/4340, 42CrMo4/SCM440 equivalents.
- [42CrMo4 (1.7225)](https://steelstandart.com/grade/42crmo4/): 42CrMo4 (1.7225) is the Cr-Mo quenched-and-tempered steel of EN 10083-3: 900 MPa yield, 1100–1300 MPa tensile up to 16 mm. Composition, heat treatment, hardness, 4140/SCM440/42CrMo equivalents.
- [430 (S43000)](https://steelstandart.com/grade/430/): 430 stainless steel (UNS S43000, EN 1.4016): 16–18 % Cr ferritic, no nickel, magnetic. 205 MPa (30 ksi) yield, 450 MPa (65 ksi) tensile. Composition, properties, 430 vs 304, and 1.4016/SUS430 equivalents.
- [4340 (G43400)](https://steelstandart.com/grade/4340/): 4340 steel (AISI/SAE 4340, UNS G43400): 0.40 % C, 1.8 % Ni, 0.8 % Cr, 0.25 % Mo. Q&T to 1000–1900 MPa with high toughness; through-hardens to 100+ mm. Composition, heat treatment, hardness by temper, 4340 vs 4140, 34CrNiMo6/SNCM439/EN24 equivalents.
- [52100 (G52986)](https://steelstandart.com/grade/52100/): 52100 steel (AISI/SAE 52100, UNS G52986, E52100): 1.0 % C, 1.5 % Cr bearing steel. Hardens to 60–67 HRC; 58–62 HRC in service. Composition, heat treatment, 52100 as knife steel, 100Cr6/SUJ2/GCr15/EN31 equivalents.
- [8620 (G86200)](https://steelstandart.com/grade/8620/): 8620 steel (AISI/SAE 8620, UNS G86200): 0.20 % C, 0.55 % Ni, 0.5 % Cr, 0.2 % Mo case-hardening steel. Carburized case 58–62 HRC over 800–1000 MPa core. Composition, heat treatment, 8620 vs 4140/1018, 21NiCrMo2/SNCM220/20CrNiMo equivalents.
- [A106 Grade B (K03006)](https://steelstandart.com/grade/a106-b/): ASTM A106 Grade B / ASME SA-106 Gr B (UNS K03006): the standard seamless carbon steel pipe for high-temperature and pressure service — 240 MPa (35 ksi) yield, 415 MPa (60 ksi) tensile. Grades A/B/C, composition, A106 vs A53 vs API 5L, P235GH/P265GH/STPG370 equivalents.
- [A36 (K02600)](https://steelstandart.com/grade/a36/): ASTM A36 steel (UNS K02600): the standard US structural carbon steel — 250 MPa (36 ksi) minimum yield, 400–550 MPa (58–80 ksi) tensile. Composition by product, thickness effects, A36 vs A572 / 1018 / S235JR, and SS400/Q235 equivalents.
- [A516 Grade 70 (K02700)](https://steelstandart.com/grade/a516-70/): ASTM A516 Grade 70 / ASME SA-516-70 (UNS K02700): the standard US pressure-vessel plate — 260 MPa (38 ksi) yield, 485–620 MPa (70–90 ksi) tensile, normalized for toughness. Grades 55–70, composition by thickness, HIC/NACE options, P265GH/P295GH/Q345R equivalents.
- [A572 Grade 50 (K02303)](https://steelstandart.com/grade/a572-50/): ASTM A572 Grade 50 (UNS K02303): HSLA structural steel with 345 MPa (50 ksi) minimum yield and 450 MPa (65 ksi) tensile, micro-alloyed with Nb/V. All five grades (42–65), thickness limits, A572 vs A36 / A992 / S355, Q355/SM490 equivalents.
- [C10 (1.0301)](https://steelstandart.com/grade/c10/): C10 (1.0301) / C10E (1.1121, ex Ck10) is the 0.10 % carbon case-hardening and cold-heading steel of EN 10084: carburized surface 55–60 HRC, very soft core. Composition, heat treatment, 1010/S10C/10# equivalents and the C8/C12 question.
- [C15 (1.0401)](https://steelstandart.com/grade/c15/): C15 (1.0401) / C15E (1.1141, ex Ck15) is the plain 0.15 % carbon case-hardening steel of EN 10084: carburized surface 55–62 HRC, core 440–590 MPa. Composition, heat treatment, 1015/S15C/15# equivalents.
- [C45 (1.0503)](https://steelstandart.com/grade/c45/): C45 (1.0503) is the 0.45 % carbon steel of EN 10083-2: 305 MPa yield normalized, 490–800 MPa tensile Q&T up to 16 mm. Composition, heat treatment, hardness, 1045/S45C/45# equivalents.
- [DC01 (1.0330)](https://steelstandart.com/grade/dc01/): DC01 (1.0330, ex St12) is the base cold-rolled mild steel sheet of EN 10130: 140–280 MPa yield, 270–410 MPa tensile, 28 % elongation. Composition, forming class, coating variants and CR1/SPCC/08kp equivalents.
- [DD11 (1.0332)](https://steelstandart.com/grade/dd11/): DD11 (1.0332, ex StW22) is the hot-rolled forming sheet of EN 10111: 170–360 MPa yield, ≤ 440 MPa tensile, 23–28 % elongation. Composition, thickness table, pickled (+P) variants and SPHC/HR1/CS equivalents.
- [DX51D (1.0226)](https://steelstandart.com/grade/dx51d/): DX51D (1.0226) is the base hot-dip galvanized sheet of EN 10346: no guaranteed yield, 270–500 MPa tensile, 22 % elongation, zinc Z100–Z600 (Z275 standard). Coating codes, forming limits, SGCC/CS/DX52D comparison.
- [P265GH (1.0425)](https://steelstandart.com/grade/p265gh/): P265GH (1.0425, ex HII) is the EN 10028-2 pressure-vessel steel: 265 MPa yield, 410–530 MPa tensile, 27 J at −20 °C, Rp0.2 guaranteed to 400 °C. Composition, elevated-temperature table, A516-60/SA-516 equivalents.
- [P355NH (1.0565)](https://steelstandart.com/grade/p355nh/): P355NH (1.0565, ex WStE355) is the EN 10028-3 normalized fine-grain pressure-vessel steel: 355 MPa yield, 490–630 MPa tensile, Rp0.2 to 400 °C, 27 J at −20 °C. Data, N/NH/NL1/NL2 family, A516-70/SA-516 equivalents.
- [S195T (1.0026)](https://steelstandart.com/grade/s195t/): S195T (1.0026) is the steel of EN 10255 water and gas pipe: 195 MPa yield, 320–520 MPa tensile, light/medium/heavy series (old BS 1387 Class A/B/C). Chemistry, wall tables, A53 Grade A and GOST 3262 equivalents.
- [S235JR (1.0038)](https://steelstandart.com/grade/s235jr/): S235JR (1.0038) is the EN 10025-2 structural steel with 235 MPa minimum yield, 360–510 MPa tensile and 27 J impact at +20 °C. Composition, equivalents, old names.
- [S235JRH (1.0039)](https://steelstandart.com/grade/s235jrh/): S235JRH (1.0039) is S235JR as a hollow section: 235 MPa yield, 360–510 MPa tensile, 27 J at +20 °C, SHS/RHS/CHS to EN 10219 or EN 10210. Chemistry, tolerances, buckling curves, A500 Grade B / STKR400 / Q235B equivalents.
- [S250GD (1.0242)](https://steelstandart.com/grade/s250gd/): S250GD (1.0242) is the entry structural galvanized grade of EN 10346: 250 MPa yield, 330 MPa tensile, 19 % elongation, Z100–Z600 coating. Chemistry, S220GD–S550GD ladder, A653 SS/HSLAS equivalents, purlin and decking use.
- [S275JR (1.0044)](https://steelstandart.com/grade/s275jr/): S275JR (1.0044) structural steel: 275 MPa minimum yield, 410–560 MPa tensile, 27 J at +20 °C. Chemical limits, thickness-based mechanicals, ASTM/JIS/GB equivalents.
- [S280GD (1.0244)](https://steelstandart.com/grade/s280gd/): S280GD (1.0244): 280 MPa yield, 360 MPa tensile, 18 % elongation, EN 10346 galvanized structural sheet — the standard European purlin and framing grade. Chemistry, coating codes, A653 SS Grade 40 and SGC400 equivalents.
- [S350GD (1.0529)](https://steelstandart.com/grade/s350gd/): S350GD (1.0529): 350 MPa yield, 420 MPa tensile, 16 % elongation — EN 10346 galvanized structural sheet for deck, long-span purlins and racking. Chemistry, coatings, A653 SS Grade 50 and SGC440 equivalents.
- [S355J2 (1.0577)](https://steelstandart.com/grade/s355j2/): S355J2 (1.0577): 355 MPa yield, 470–630 MPa tensile, 27 J Charpy at −20 °C. The plate grade for cranes, bridges and machinery — full composition, thickness table, equivalents (A572, Q355D, SM490).
- [S355J2H (1.0576)](https://steelstandart.com/grade/s355j2h/): S355J2H (1.0576) is the high-strength hollow-section grade: 355 MPa yield, 470–630 MPa tensile, 27 J at −20 °C, SHS/RHS/CHS to EN 10219 and EN 10210. Chemistry, tolerances, buckling curves, A500 Grade C / A1085 / STKR490 equivalents.
- [S355J2W (1.8965)](https://steelstandart.com/grade/s355j2w/): S355J2W (1.8965) is the European Corten B: Cu-Cr-Ni weathering steel, 355 MPa yield, 470–630 MPa tensile, 27 J at −20 °C, self-protecting rust patina. Chemistry, thickness table, A588 / A242 / SMA490 equivalents, welding and façade use.
- [S355JR (1.0045)](https://steelstandart.com/grade/s355jr/): S355JR (1.0045): 355 MPa minimum yield, 470–630 MPa tensile, 27 J at +20 °C. The base S355 grade — composition by thickness, ASTM A572/JIS/GB equivalents, old St52 names.
- [S355MC (1.0976)](https://steelstandart.com/grade/s355mc/): S355MC (1.0976) is the EN 10149-2 thermomechanical cold-forming steel: 355 MPa yield, 430–550 MPa tensile, bend radius from 0.5 t, easy welding. Chemistry (Nb/V/Ti), bend table, S420MC–S700MC ladder, A1011 HSLAS-F and QStE380TM equivalents.
- [S700MC (1.8974)](https://steelstandart.com/grade/s700mc/): S700MC (1.8974): 700 MPa yield, 750–950 MPa tensile, 10–12 % elongation — EN 10149-2 thermomechanical grade for crane booms and trailer chassis. Chemistry (Nb/V/Ti/Mo/B), bend radii, welding rules, A1011 HSLAS Grade 80 and QStE690TM equivalents.
- [St37-2 (1.0037)](https://steelstandart.com/grade/st37/): St37-2 (DIN 17100) is the withdrawn German structural steel now called S235JR: 235 MPa yield, 340–470 MPa tensile. What St37 means, how it maps to S235JR/1.0038, A36, SS400 and Q235, and what changed.
- [St52-3 (1.0570)](https://steelstandart.com/grade/st52/): St52-3 (DIN 17100) is the withdrawn German 355 MPa structural steel, now S355J2 (1.0577) or S355JR: 355 MPa yield, 490–630 MPa tensile. Mapping to S355, A572-50, SM490, Q355 and what changed in EN 10025.

## Comparisons

- [1.4301 vs 1.4404](https://steelstandart.com/compare/1-4301-vs-1-4404/): 1.4301 vs 1.4404 (V2A vs V4A): 1.4404 adds 2–2.5 % Mo for chloride resistance (PREN 24 vs 18), costs 25–40 % more; strength, magnetism and weldability are equal. EN 10088 numbers side by side and when V4A is worth it.
- [1018 vs 4140](https://steelstandart.com/compare/1018-vs-4140/): 1018 vs 4140 steel: cold-drawn 1018 ≈ 370 MPa yield, not hardenable, weldable; 4140 ≈ 415 MPa annealed and 900–1600 MPa heat-treated, hardenable to 55 HRC, hard to weld. Full table and when each is right.
- [1045 vs 4140](https://steelstandart.com/compare/1045-vs-4140/): 1045 vs 4140: same 0.45 % carbon, but 4140's Cr-Mo gives deep hardenability (50–75 mm vs 20 mm), higher Q&T strength (to 1600 MPa) and better toughness. 1045 is cheaper and machines easier. Table and buying guide.
- [304 vs 316](https://steelstandart.com/compare/304-vs-316/): 304 vs 316 stainless steel: 316 adds 2–3 % molybdenum for chloride resistance (PREN 24 vs 18) at 20–40 % higher cost; strength, magnetism and weldability are the same. Full table and when to pay for 316.
- [A36 vs 1018](https://steelstandart.com/compare/a36-vs-1018/): A36 vs 1018: A36 is an ASTM structural spec (≥ 250 MPa yield, loose chemistry, plate/shapes); 1018 is an AISI chemistry grade (0.18 % C, no guaranteed strength, cold-drawn bar ≈ 370 MPa). Same family of mild steel, different rules — table and when each applies.
- [A36 vs A572 Grade 50](https://steelstandart.com/compare/a36-vs-a572/): A36 vs A572 Grade 50: yield 250 vs 345 MPa (36 vs 50 ksi), tensile 400–550 vs ≥ 450 MPa, price +3–8 %, weight saving 25–30 % in strength-governed members. Chemistry, weldability, forming and when each US structural steel is right.
- [A36 vs S235JR](https://steelstandart.com/compare/a36-vs-s235jr/): A36 vs S235JR: US and EU mild structural steels — yield 250 vs 235 MPa, tensile 400–550 vs 360–510 MPa, Charpy none vs 27 J at +20 °C, carbon ≤ 0.25–0.29 vs 0.17 %. Substitution rules in both directions and the S275 option.
- [DC01 vs DX51D](https://steelstandart.com/compare/dc01-vs-dx51d/): DC01 vs DX51D: DC01 is uncoated cold-rolled sheet (EN 10130, yield 140–280 MPa, 28 % elongation); DX51D is hot-dip galvanized bending-quality sheet (EN 10346, no yield minimum, 22 %). Same steel, coated or not — table, coating codes and which to buy.
- [DC01 vs S235JR](https://steelstandart.com/compare/dc01-vs-s235jr/): DC01 vs S235JR: DC01 is cold-rolled forming sheet (EN 10130, yield 140–280 MPa, no minimum guarantee); S235JR is hot-rolled structural steel (EN 10025-2, yield ≥ 235 MPa, 27 J impact). Same low-carbon steel, different guarantees — table and buying guide.
- [S235JR vs P265GH](https://steelstandart.com/compare/s235jr-vs-p265gh/): S235JR vs P265GH (and P235GH): structural vs pressure-vessel steel — similar strength (235–265 MPa yield) but P…GH adds guaranteed yield to 400 °C, −20 °C impact, S ≤ 0.010 %, normalizing and per-plate PED testing. Why you cannot swap them, with the full table.
- [S235JR vs S355J2](https://steelstandart.com/compare/s235jr-vs-s355j2/): S235 vs S355: yield 235 vs 355 MPa, tensile 360–510 vs 470–630 MPa, price +5–10 %, weldability CEV 0.35 vs 0.45. Which EN 10025 structural steel to choose, with the full side-by-side table.
- [St37 vs St52](https://steelstandart.com/compare/st37-vs-st52/): St37 vs St52 (DIN 17100): yield 235 vs 355 MPa, tensile 340–470 vs 490–630 MPa. Both withdrawn — today S235JR and S355J2. Side-by-side table, the St44 middle grade, and what to order now.

## Policy

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