EN10028 P275NH steel plate/sheet,EN10028 P275NH steel plate/sheet, under EN standard, we can regard P275NH steel plate/sheet for boilers and Pressure Vessels steels.EN10028 P275NH steel plate/sheet is for boilers and Pressure Vessels steels,it is a normalized steel plate and sheet which is mainly used for building pressure vessels and boilers and pipes for hot liquid.
The chemical composition of EN P275NH steel
| Element | Max % | Element | max % |
| C | 0.18 | Cu | 0.30 |
| Si | 0.40 | Mo | 0.08 |
| Mn | 0.50-1.40 | N | 0.02 |
| P | 0.03 | Nb | 0.05 |
| S | 0.03 | Ni | 0.50 |
| AL | 0.020 | Ti | 0.03 |
| Cr | 0.30 | V | 0.05 |
| Nb+Ti+V | 0.05 |
The mechanical properties of EN P275NH steel
| Grade | Material | Thickness | Yield Strength | Tensile Strength | Elongation |
| (mm) | MPa (min) | MPa | % (min) | ||
| P275NH | 1.0487 | ≤ 16 | 275 | ||
| 16> to ≤35 | 275 | ||||
| 35> to ≤50 | 265 | ||||
| 50> to ≤70 | 255 | 370-490 | 23 | ||
| 70> to ≤100 | 235 | 350-470 | 1) | ||
| 100> to ≤150 | 225 | 1) | 1) | ||
| >150 | 390-510 | 24 |
The impact test of EN P275NH steel
| Type | Usual Dekivery Condition |
Norminal Thickness (mm) |
Impact Energy KV min[J] at temperature [°C] | |||||||||
| Longitudinal | Longitudinal | |||||||||||
| -50 | -40 | -20 | 0 | +20 | -50 | -40 | -20 | 0 | +20 | |||
| P275NH | N | 5-150 | - | - | 40 | 47 | 55 | - | - | 20 | 27 | 31 |
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