EN 10028:3 P275NH

  • Pressure

Brown McFarlane holds stocks of boiler plate steel certified to EN 10028:3 P275NH.

  • Ready to be supplied as plate, cut plates, or shapes (profiles).
  • The specification EN 10028:3 covers a range of weldable fine grain steels supplied in the normalised condition and intended for pressure purposes.

Requirements

Chemical Requirements

(cast analysis, % by mass, maximum permitted unless indicated otherwise)

CSiMnPSA1 totalNCr
0.16 0.40 0.80-1.50 0.025 0.015 0.020 min 0.012 0.30
Cu Mo Nb Ni Ti V Nb+Ti+V  
0.30 0.08 0.05 0.50 0.03 0.05 0.05  

Tensile Requirements

Product ThicknessYield Strength MPaTensile Strength MPaElongation A%
up to 16 mm 275 min 390 to 510 24 min
16 to 40 mm 265 min 390 to 510 24 min
over 40 to 60 mm 255 min 390 to 510 24 min
over 60 to 100 mm 235 min 370 to 490 23 min
over 100 to 150 mm 225 min 360 to 480 23 min
over 150 to 250 mm 215 min 350 to 470 23 min

Values

Impact energy values for the normalised condition.

 -20°C0°C+20°C
Transverse 30 J min 40 J min 50 J min
Longitudinal 45 J min 65 J min 75 J min

Strength

Min. values for proof strength Rp0,2 (MPa) at elevated temperatures.

Thickness50°C100°C150°c200°C250°C300°C350°C400°C
up to 16 mm 266 250 232 213 195 179 166 156
16 to 40 mm 256 241 223 205 188 173 160 150
over 40 to 60 mm 247 232 215 197 181 166 154 145
over 60 to 100 mm 227 214 198 182 167 153 142 133
over 100 to 150 mm 218 205 190 174 160 147 136 128
over 150 to 250 mm 208 196 181 167 153 140 130 122