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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.
If you’re looking for a weldable fine-grain steel that can stand up to the rigors of high-temperature service, P275NH is your go-to. This grade is suitable for the fabrication of pressure vessels for pressurised gases and chemicals, industrial boilers, compressors and heat exchangers. The grade is intended for use in moderate to high temperature service.
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
Key benefits
Brown McFarlane is a leading supplier of quality approved steel plate and profiles. We offer the widest range of carbon steel plate, available ex-stock.
Through our extensive facilities and efficient service, we deliver high quality products at competitive prices to our customers across the globe.
- All European, American and British grades available, sourced from Western European Mills
- Cut to size
- Fully accredited quality systems to iSO 9001, 14001 and 18001
- Low sulphur & phosphorous, vacuum degassed, in some cases also calcium treated
- Plate thickness from 3mm to 300mm, widths up to 4.5m, lengths up to 18mm.
- Quick delivery – mill fast track service available
- Delivered worldwide by our international logistics organisation.
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 |
