P275NH steel are used above all for manufacturing boilers, pressure vessels and pipes transporting hot liquids.
EN 10028-3 P 275 NH is for flat products made of steels for pressure purposes,part 3:weldable fine grain steels,normalized.
P 275 NH material chemical composition:max
| Grade | C | Si | Mn | P | S | Cr | Ni |
| P 275 NH | 0.16 | 0.40 | 0.80-1.50 | 0.025 | 0.010 | 0.30 | 0.50 |
P 275 NH steel mechanical properties:
| Grade | Product thickness t mm | Yield strength ReH mpa mm | Tensile strength mpa | Elongation after fracture % min |
| P 275 NH | ≤16 | 275 | 390-510 | 24 |
| 16 | 265 | |||
| 40 | 255 | |||
| 60 | 235 | 370-490 | 23 | |
| 100 | 225 | 360-480 | ||
| 150 | 215 | 350-470 |
Heat Treatment: Hot Rolled, CR, Normalized, Quenched, Tempering, TMCP, Electroslag Remelting Technical, HIC test.
EN 10028-3 P 275 NH steel Steel Services: Cutting, Painting, Ball blast, Pre-treatment ,and The third party inspection in DNV, BV, LR, GL, ABS, CCS , CE Mark, TUV, ISO, and others in super thick ship steel plate.
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