P355GH equivalent grades: ASTM, EN, JIS, GB, DIN
Cross-reference for P355GH across standard systems. Each match is graded so you can see how safe the substitution is. Non-alloy steel for pressure purposes with elevated-temperature properties — full P355GH data sheet.
Cross-reference table
| Grade | System | Match | Why / differences |
|---|---|---|---|
| A516 Gr. 70 | ASTM / ASME | Near | ASTM A516 Grade 70 (SA-516-70): yield 260 MPa (38 ksi), Rm 485–620 MPa. Similar tensile band and service role, but the yield is markedly lower and ASTM gives allowable stresses through ASME Section II-D rather than a guaranteed elevated-temperature proof strength. |
| SPV355 | JIS (Japan) | Near | JIS G3115 SPV355: 355 MPa yield pressure-vessel plate; chemistry and impact regime differ in detail. |
| A537 Cl. 1 | ASTM / ASME | Functional | Normalized C-Mn pressure plate with 345 MPa yield — the closest US grade by strength, used where A516-70 is not strong enough. |
| P355NH | EN (European) | Functional | EN 10028-3 weldable fine-grain grade at the same yield. Choose NH where low-temperature toughness matters more than elevated-temperature service; GH where the vessel runs hot. |
| 16Mo3 | EN (European) | Functional | Molybdenum-alloyed creep-resistant grade for service above 400 °C, where P355GH's guaranteed proof strength table ends. |
Identical = same composition and mechanical limits within rounding. Near = one limit differs (e.g. carbon max or impact temperature). Functional = interchangeable for most uses after an engineering check.
How the matches are graded
Identical means the chemical composition windows overlap so that material certified to one specification meets the other without deviation, and the mechanical minimums are the same or the other is inside them — mills usually dual-certify. Near means one limit differs (a carbon maximum, an impact temperature, a strength minimum or a delivery condition) and a substitution needs a one-line engineering check. Functional means the grades serve the same purpose but are not the same steel — a designer can often use one for the other, but only after re-checking the design.
P355GH in ASTM / ASME
- A516 Gr. 70 — Near ASTM A516 Grade 70 (SA-516-70): yield 260 MPa (38 ksi), Rm 485–620 MPa. Similar tensile band and service role, but the yield is markedly lower and ASTM gives allowable stresses through ASME Section II-D rather than a guaranteed elevated-temperature proof strength.
- A537 Cl. 1 — Functional Normalized C-Mn pressure plate with 345 MPa yield — the closest US grade by strength, used where A516-70 is not strong enough.
P355GH in JIS (Japan)
- SPV355 — Near JIS G3115 SPV355: 355 MPa yield pressure-vessel plate; chemistry and impact regime differ in detail.
P355GH in EN (European)
- P355NH — Functional EN 10028-3 weldable fine-grain grade at the same yield. Choose NH where low-temperature toughness matters more than elevated-temperature service; GH where the vessel runs hot.
- 16Mo3 — Functional Molybdenum-alloyed creep-resistant grade for service above 400 °C, where P355GH's guaranteed proof strength table ends.
Superseded names for P355GH
- 17Mn4 — DIN 17155: the German boiler-plate designation replaced in 1992
- HIII — DIN 17155: older trade name, still quoted in tenders
- Fe 510 KW — EURONORM: withdrawn
Key data for P355GH
Full composition, mechanical properties by thickness, heat treatment and applications for P355GH →
Verified against EN 10028-2:2017. Last checked: September 2026.