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EN 10028:3 P275NH Boiler Plate Steel
EN 10028:3 P275NH boiler plate steel is for pressure purposes (P) with minimum yield strength of 275 MPa (275) which has specified elevated temperature properties (NH). Learn more about our steel grades here.
As well as P275NH we are stockists of other EN 10028:3 plates manufactured and certified to:
EN 10028:3 P355NL1, EN 10028:3 P355NL2, EN 10028:3 P355NH.
We also carry stocks of plates certified to EN 10028:2 P265GH.
Applications
- Boilers
- Calorifiers
- Dished ends
- Flanges
- Heat exchangers
- Pipelines
- Pressure vessels
- Storage tanks
- Valves
- Flanges and fittings
- Condensers
Properties
Chemical Requirements
(cast analysis, % by mass, maximum permitted unless indicated otherwise)
| C | Si | Mn | P | S | A1 total | N | Cr | Cu | Mo | Nb | Ni | Ti | V | Nb+Ti+V |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.16 | 0.40 | 0.80 – 1.50 | 0.025 | 0.015 | 0.020 min | 0.012 | 0.30 | 0.30 | 0.08 | 0.05 | 0.50 | 0.03 | 0.05 | 0.05 |
Tensile Requirements
| Product thickness | Yield strength MPA | Tensile strength MPA | Elongation A% |
|---|---|---|---|
| up to 16mm | 275 min | 390 to 510 | 24 min |
| 16mm to 40mm | 265 min | 390 to 510 | 24 min |
| over 40mm to 60mm | 255 min | 390 to 510 | 24 min |
| over 60mm to 100mm | 235 min | 370 to 490 | 23 min |
| over 100mm to 150mm | 225 min | 360 to 480 | 23 min |
| over 150mm to 250mm | 215 min | 350 to 470 | 23 min |
VALUES:
Impact energy values for the normalised condition.
| -20°C | 0°C | +20°C | |
|---|---|---|---|
| Transverse | 30 J min | 40 J min | 50 J min |
| Lonitudinal | 45 J min | 65 J min | 75 J min |
STRENGTH:
Min. values for proof strength Rp0,2 (MPa) at elevated temperatures.
| Thickness | 50°C | 100°C | 150°C | 200°C | 250°C | 300°C | 350°C | 400°C |
|---|---|---|---|---|---|---|---|---|
| up to 16mm | 266 | 250 | 232 | 213 | 195 | 179 | 166 | 156 |
| 16mm to 40mm | 256 | 241 | 223 | 205 | 188 | 173 | 160 | 150 |
| over 40mm to 60mm | 247 | 232 | 215 | 197 | 181 | 166 | 154 | 145 |
| over 60mm to 100mm | 227 | 214 | 198 | 182 | 167 | 153 | 142 | 133 |
| over 100mm to 150mm | 218 | 205 | 190 | 174 | 160 | 147 | 136 | 128 |
| over 150mm to 250mm | 208 | 196 | 181 | 167 | 153 | 140 | 130 | 122 |
