P355GH equivalent grades: ASTM, EN, JIS, GB, DIN
P355GH is non-alloy steel for pressure purposes with elevated-temperature properties specified in EN 10028-2. The cross-reference runs across 3 standard systems and grades every candidate, so the reason a substitution is safe is on the same row as the name. The full P355GH data sheet carries the composition and mechanical tables.
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A single clause separates A516 Grade 70, SPV355: differ either a test temperature or a composition bound that the other does not. A537 Cl. 1, P355NH, 16Mo3 serve the same purpose without being the same steel, so a substitution there needs the design re-checked rather than the certificate. Counted by system: 2 in ASTM / ASME, 1 in JIS (Japan), 2 in EN (European).
Cross-reference table
| Grade | System | Match | Why / differences |
|---|---|---|---|
| A516 Grade 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, near and functional are defined once on the grade index; the reason column below says which limit differs in each case.
P355GH in ASTM / ASME
- A516 Grade 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.