EN 10028-3 — Flat products made of steels for pressure purposes. Part 3: Weldable fine grain steels, normalized
Scope
Normalized fine-grain pressure-vessel plate in strength classes 275, 355, 400 and 460 MPa: P275N/NH/NL1/NL2, P355N/NH/NL1/NL2, P460N/NH/NL1/NL2 (and P275NH etc.). Al-killed with Nb/V/Ti grain refinement; impact guaranteed at −20 °C (N/NH), −40 °C (NL1) and −50 °C (NL2); NH grades have elevated-temperature yield to 400 °C.
Grades covered by EN 10028-3
| Grade | No. | Type | C % | Yield MPa | Tensile MPa | Nearest equivalents |
|---|---|---|---|---|---|---|
| P355NH | 1.0565 | Weldable fine-grain normalized steel for pressure purposes, elevated temperature | ≤ 0.2 | 355 | 490–630 | A516 Gr. 70, A537 Cl. 1, A737 Gr. B |
Revision history and superseded standards
| Year | Change |
|---|---|
| 1992 | EN 10028-3:1992 — replaced DIN 17102 |
| 2003 | Revision |
| 2009 | Revision; PED alignment |
| 2017 | EN 10028-3:2017 — current |
Supersedes: DIN 17102:1983 (StE, WStE, TStE, EStE 255–500); BS 1501-224/225; EN 10028-3:1992 / 2003 / 2009.
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