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EN 10273 Grade P275NH Steel: Normalized or Normalized Formed (+N) – High-Temperature Pressure Vessel Grade

The steel P275NH is a high temperature steel. Application: use in pressure vessel engineering.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.85 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

-100.0 °C

217 GPa

20.0 °C

212 GPa

100.0 °C

207 GPa

200.0 °C

199 GPa

300.0 °C

192 GPa

400.0 °C

184 GPa

500.0 °C

175 GPa

600.0 °C

164 GPa

Elongation

20.0 °C

23 - 24 %

Poisson's ratio

23.0 °C

0.29 [-]

Typical for Low Carbon Steel

Shear modulus

23.0 °C

82 GPa

Typical for Low Carbon Steel

Tensile strength

20.0 °C

350 - 510 MPa

Yield strength

20.0 °C

225 - 275 MPa

Yield strength Rp0.2

50.0 °C

214 - 266 MPa

100.0 °C

196 - 250 MPa

150.0 °C

176 - 232 MPa

200.0 °C

157 - 213 MPa

250.0 °C

137 - 195 MPa

300.0 °C

108 - 179 MPa

350.0 °C

88 - 166 MPa

400.0 °C

69 - 156 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

-100.0 °C

1.08E-5 1/K

20.0 °C

1.19E-5 1/K

100.0 °C

1.25E-5 1/K

200.0 °C

1.3E-5 1/K

300.0 °C

1.36E-5 1/K

400.0 °C

1.41E-5 1/K

500.0 °C

1.45E-5 1/K

600.0 °C

1.49E-5 1/K

Max service temperature

500 °C

Typical for Carbon Steel

Melting point

1480 - 1526 °C

Typical for Low Carbon Steel

Specific heat capacity

-100.0 °C

423 J/(kg·K)

20.0 °C

461 J/(kg·K)

100.0 °C

479 J/(kg·K)

200.0 °C

499 J/(kg·K)

300.0 °C

517 J/(kg·K)

400.0 °C

536 J/(kg·K)

500.0 °C

558 J/(kg·K)

600.0 °C

587 J/(kg·K)

Thermal conductivity

-100.0 °C

52.6 W/(m·K)

20.0 °C

53.4 W/(m·K)

100.0 °C

53.3 W/(m·K)

200.0 °C

50.1 W/(m·K)

300.0 °C

46.9 W/(m·K)

400.0 °C

43.2 W/(m·K)

500.0 °C

39.5 W/(m·K)

600.0 °C

36.1 W/(m·K)

Thermal diffusivity

-100.0 °C

18 mm²/s

20.0 °C

14.8 mm²/s

100.0 °C

13.7 mm²/s

200.0 °C

12.1 mm²/s

300.0 °C

10.6 mm²/s

400.0 °C

9.2 mm²/s

500.0 °C

7.6 mm²/s

600.0 °C

6.1 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

-100.0 °C

1.3E-7 Ω·m

20.0 °C

1.95E-7 Ω·m

100.0 °C

2.4E-7 Ω·m

200.0 °C

3.15E-7 Ω·m

300.0 °C

4E-7 Ω·m

400.0 °C

5.03E-7 Ω·m

500.0 °C

6.26E-7 Ω·m

600.0 °C

7.68E-7 Ω·m

Magnetic

PropertyValueComment

Curie temperature

770 °C

Typical for Low Carbon Steel

Chemical properties

PropertyValue

Aluminium

0.02 %

Carbon

0.16 - 0.18 %

Chromium

0.3 %

Copper

0.3 %

Manganese

0.5 - 1.4 %

Molybdenum

0.08 %

Nickel

0.5 %

Niobium

0.05 %

Nitrogen

0.01 - 0.02 %

Phosphorus

0.03 %

Silicon

0.4 %

Sulfur

0.01 - 0.025 %

Titanium

0.03 %

Vanadium

0.05 %


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