P355NH equivalent grades: ASTM, EN, JIS, GB, DIN
Cross-reference for P355NH across standard systems. Each match is graded so you can see how safe the substitution is. Weldable fine-grain normalized steel for pressure purposes, elevated temperature — full P355NH data sheet.
Cross-reference table
| Grade | System | Match | Why / differences |
|---|---|---|---|
| IS 2041 R355 | IS (India) | Identical | IS 2041 (pressure-vessel plate) grade R355. |
| SPV355 | JIS (Japan) | Identical | JIS G3115 SPV355: yield 355 MPa, Rm 520–640 MPa; SPV355N (normalized). |
| A516 Gr. 70 | ASTM / ASME | Near | ASTM/ASME A516-70: yield 260 MPa, Rm 485–620 MPa, C ≤ 0.27–0.31 — the common US vessel plate, but lower yield and no micro-alloy fine-grain guarantee. Order normalized with Charpy (S5) for a closer match. |
| A537 Cl. 1 | ASTM / ASME | Near | Normalized C-Mn-Si vessel plate: yield 345 MPa (≤ 65 mm), Rm 485–620 MPa — the nearest US equivalent by yield and condition. |
| A737 Gr. B | ASTM / ASME | Near | Nb micro-alloyed vessel plate, yield 345 MPa, Rm 485–620 MPa. |
| P355GH | EN (European) | Near | 1.0473 (ex 19Mn6): EN 10028-2 non-fine-grain grade with the same strength; higher C (0.22), CEV 0.45. |
| S355N | EN (European) | Near | EN 10025-3 structural fine-grain twin without pressure-equipment certification. |
| Q345R / 16MnDR | GB/T (China) | Near | GB/T 713 Q345R: yield 345 MPa, Rm 510–640 MPa, impact 0 °C; 16MnDR (GB/T 3531) for −40 °C ≈ P355NL1. |
| 09G2S | GOST (Russia/CIS) | Near | GOST 5520 09G2S vessel plate: yield 305–345 MPa, Rm 460–490 MPa. |
| P355QH | EN (European) | Functional | EN 10028-6 quenched & tempered version for thick sections. |
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.
P355NH in IS (India)
- IS 2041 R355 — Identical IS 2041 (pressure-vessel plate) grade R355.
P355NH in JIS (Japan)
- SPV355 — Identical JIS G3115 SPV355: yield 355 MPa, Rm 520–640 MPa; SPV355N (normalized).
P355NH in ASTM / ASME
- A516 Gr. 70 — Near ASTM/ASME A516-70: yield 260 MPa, Rm 485–620 MPa, C ≤ 0.27–0.31 — the common US vessel plate, but lower yield and no micro-alloy fine-grain guarantee. Order normalized with Charpy (S5) for a closer match.
- A537 Cl. 1 — Near Normalized C-Mn-Si vessel plate: yield 345 MPa (≤ 65 mm), Rm 485–620 MPa — the nearest US equivalent by yield and condition.
- A737 Gr. B — Near Nb micro-alloyed vessel plate, yield 345 MPa, Rm 485–620 MPa.
P355NH in EN (European)
- P355GH — Near 1.0473 (ex 19Mn6): EN 10028-2 non-fine-grain grade with the same strength; higher C (0.22), CEV 0.45.
- S355N — Near EN 10025-3 structural fine-grain twin without pressure-equipment certification.
- P355QH — Functional EN 10028-6 quenched & tempered version for thick sections.
P355NH in GB/T (China)
- Q345R / 16MnDR — Near GB/T 713 Q345R: yield 345 MPa, Rm 510–640 MPa, impact 0 °C; 16MnDR (GB/T 3531) for −40 °C ≈ P355NL1.
P355NH in GOST (Russia/CIS)
- 09G2S — Near GOST 5520 09G2S vessel plate: yield 305–345 MPa, Rm 460–490 MPa.
Superseded names for P355NH
- WStE355 — DIN 17102 (withdrawn 1996): W = warmfest (elevated temperature) → P355NH.
- StE355 — DIN 17102: → P355N (1.0562).
- TStE355 — DIN 17102: T = tieftemperatur → P355NL1 (−40 °C).
- EStE355 — DIN 17102: → P355NL2 (−50 °C).
- Fe E 355 KG / KW / KT — EN 10028-3:1992 (ISO 9328)
- BS 1501-225-490B / LT — BS 1501 (withdrawn)
Key data for P355NH
Full composition, mechanical properties by thickness, heat treatment and applications for P355NH →
Verified against EN 10028-3:2017. Last checked: September 2026.