ASTM A537 Class 1 / Class 2 equivalent material & chemical composition.
ASTM A537 is a C-Mn-Si pressure vessel plate, normalised (Class 1) or quenched and tempered (Class 2), stronger than A516 Gr. 70.
Equivalents, chemical composition, mechanical properties and typical uses below. Confirm the governing standard, product form and condition for your order.
ASTM A537 Class 1 / Class 2 equivalent grades
- USA (ASTM / AISI / SAE)
- ASTM A537 / ASME SA537 Cl. 1 and Cl. 2
- Europe (EN)
- P355N / P355NL1 (Cl. 1, nearest) · P460N (Cl. 2, nearest)
- Werkstoff No. (W.Nr)
- 1.0562 (P355N)
- China (GB)
- Q370R (nearest)
- India (IS)
- Jindal Steel A537 Cl. 1 / Cl. 2
Key data
- Family
- Pressure vessel plate
- Density
- 7.85 g/cm³
- Typical mechanical
- Cl. 1: TS 485–620 MPa, YS ≥345 MPa · Cl. 2: TS 550–690 MPa, YS ≥415 MPa (≤65 mm) · El ≥22% (50 mm)
- Typical uses
- Mostly used for pressure vessels, LPG spheres, storage tanks and penstocks
- Weight
- Calculate ASTM A537 Class 1 / Class 2 weight
- Datasheet
- ASTM A537 Class 1 / Class 2 chemical composition PDF
ASTM A537 Class 1 / Class 2 chemical composition (weight %)
ASTM A537 ≤40 mm (heat analysis)
| C | Mn | Si | P | S | Cu | Ni | Cr | Mo |
|---|---|---|---|---|---|---|---|---|
| ≤0.24 | 0.70–1.35 | 0.15–0.50 | ≤0.025 | ≤0.025 | ≤0.35 | ≤0.25 | ≤0.25 | ≤0.08 |
ASTM A537 Class 1 / Class 2 mechanical properties
| Condition / product | Yield MPa | Tensile MPa | Elongation % | Hardness |
|---|---|---|---|---|
| A537 Class 1 (normalised), ≤65 mm | ≥345 | 485–620 | ≥22 | – |
| A537 Class 1, 65–100 mm | ≥310 | 450–585 | ≥22 | – |
| A537 Class 2 (quenched and tempered), ≤65 mm | ≥415 | 550–690 | ≥22 | – |
| A537 Class 2, 65–100 mm | ≥380 | 515–655 | ≥22 | – |
Grades similar to ASTM A537 Class 1 / Class 2
More carbon and structural grades
200–250 BHN hard plate (SAILHARD / JSPL Hard / Evonith Hard) · ABREX 400 · ABREX 450 · ABREX 500 · API 5L Gr. B · API 5L X42 · API 5L X52 · API 5L X60 · API 5L X65 · API 5L X70 · API 5L X80 · ASTM A36 · ASTM A53 Gr. B · ASTM A105 · ASTM A106 Gr. B · ASTM A128 Gr. D (Mn13Ni3 manganese steel) · ASTM A128 Gr. E-1 (Mn13Mo1 manganese steel) · ASTM A128 Gr. F (Mn7Mo1 manganese steel) · ASTM A234 WPB · ASTM A333 Gr. 6 · ASTM A515 Gr. 60 · ASTM A515 Gr. 70 · ASTM A516 Gr. 60 · ASTM A516 Gr. 70 · ASTM A517 Gr. F / A514 Gr. F (T-1) · ASTM A572 Gr. 50 · ASTM A588 Grade A weathering plate · Corten A weathering steel (IRSM 41 type) · CRCA CR1 / DC01 / SPCC · CRCA CR2 / DC03 / SPCD · CRCA CR3–CR4 / DC04–DC05 / SPCE · CREUSABRO 4800 · CREUSABRO 8000 · DILLIDUR 400 · DILLIDUR 450 · DILLIDUR 500 · DILLIDUR 550 · DILLIDUR 600 · GI / GP sheet (galvanized, IS 277) · GL / Galvalume sheet (Al-Zn, IS 15961) · Hardox 400 · Hardox 450 · Hardox 500 · Hardox 500 Tuf · Hardox 550 · Hardox 600 · Hardox Extreme · Hardox HiAce · Hardox HiTuf · HR sheet HR1 / DD11 / SPHC · HR sheet HR2–HR3 / DD12–DD13 / SPHD–SPHE · IS 2062 E250 · IS 2062 E275 · IS 2062 E300 · IS 2062 E350 · IS 2062 E410 · IS 2062 E450 · IS 2062 E550 · IS 2062 E600 · IS 2062 E650 · IS 15103 FR-Fe 410 (fire-resistant steel) · IS 15103 FR-Fe 490 (fire-resistant steel) · Mn13 manganese steel (Hadfield, X120Mn12) · Mn13Cr2 manganese steel (ASTM A128 Gr. C) · Mn18 manganese steel (ZG120Mn17) · Mn18Cr2 manganese steel (ZG120Mn17Cr2) · NM300 (GB/T 24186) · NM360 (GB/T 24186) · NM400 (GB/T 24186) · NM500 (GB/T 24186) · NM550 (GB/T 24186) · NM600 (GB/T 24186) · PPGI / PPGL (pre-painted, IS 14246) · Rockhard 400 (Jindal Steel) · Rockhard 450 (Jindal Steel) · Rockhard 500 (Jindal Steel) · Rockstar 400 (AM/NS India) · Rockstar 450 (AM/NS India) · Rockstar 500 (AM/NS India) · S355 (S355JR / J0 / J2 / K2) · S690QL · S700MC (Strenx 700MC) · S890QL · S960QL · Ship plate AH36 / DH36 / EH36 · Strenx 1100 (E/F) · Strenx 1300 (E/F) · XAR 400 · XAR 450 · XAR 500 · Zintec / electro-galvanised sheet (DC01+ZE)
See all 318 grades A–Z with UNS, W.Nr, EN and JIS names ›
Frequently asked questions
What is the equivalent of ASTM A537 Class 1 / Class 2?
ASTM A537 Class 1 / Class 2 equivalents: USA (ASTM / AISI / SAE) ASTM A537 / ASME SA537 Cl. 1 and Cl. 2; Europe (EN) P355N / P355NL1 (Cl. 1, nearest) · P460N (Cl. 2, nearest); Werkstoff No. (W.Nr) 1.0562 (P355N); China (GB) Q370R (nearest); India (IS) Jindal Steel A537 Cl. 1 / Cl. 2. Equivalents are close but not always identical; check the standard on your order.
What is the chemical composition of ASTM A537 Class 1 / Class 2?
ASTM A537 Class 1 / Class 2 (ASTM A537 ≤40 mm (heat analysis)): C ≤0.24, Mn 0.70–1.35, Si 0.15–0.50, P ≤0.025, S ≤0.025, Cu ≤0.35, Ni ≤0.25, Cr ≤0.25, Mo ≤0.08 (weight %).
What is the density of ASTM A537 Class 1 / Class 2?
About 7.85 g/cm³ (7,850 kg/m³), the value used for weight calculations.
What are the mechanical properties of ASTM A537 Class 1 / Class 2?
Typical values for ASTM A537 Class 1 / Class 2: Cl. 1: tensile strength 485–620 MPa, yield strength ≥345 MPa, Cl. 2: tensile strength 550–690 MPa, yield strength ≥415 MPa (≤65 mm), elongation ≥22% (50 mm). Actual values depend on the standard, size and heat-treatment condition; check the mill test certificate.
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Mill test certificate (EN 10204 3.1) supplied with material; third-party inspection on request.
Need ASTM A537 Class 1 / Class 2?
Steel Impex India, Mumbai, supplies ASTM A537 Class 1 / Class 2 in pipes, plates, sheets, bars and fittings as available. Send the grade, standard, size and quantity.
Reference basis: Compiled by Steel Impex India. Check each table’s source, product form and delivery condition before use. Sources, calculation methods and corrections.