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EN 10273: P295GH High-Temperature Steel – Normalized & Normalized Formed (+N)

The steel P295GH is a high temperature steel. Application: steam boiler and pressure vessel engineering, collectors, distributors, welding-neck laps, flanges and other shaped pieces. Maximum temperature of use: 530 °C, also in nuclear power station construction.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.84 - 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

21 - 22 %

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

440 - 580 MPa

Yield strength

20.0 °C

235 - 295 MPa

Yield strength Rp0.2

50.0 °C

226 - 285 MPa

100.0 °C

210 - 268 MPa

150.0 °C

198 - 249 MPa

200.0 °C

182 - 228 MPa

250.0 °C

167 - 209 MPa

300.0 °C

153 - 192 MPa

350.0 °C

142 - 178 MPa

400.0 °C

133 - 167 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

Max service temperature, long

0 - 530 °C

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

20.0 °C

46.5 W/(m·K)

100.0 °C

47.2 W/(m·K)

200.0 °C

45.9 W/(m·K)

300.0 °C

43.5 W/(m·K)

400.0 °C

40.9 W/(m·K)

500.0 °C

38.1 W/(m·K)

600.0 °C

35.3 W/(m·K)

Thermal diffusivity

20.0 °C

12.9 mm²/s

100.0 °C

12.2 mm²/s

200.0 °C

11.1 mm²/s

300.0 °C

9.9 mm²/s

400.0 °C

8.7 mm²/s

500.0 °C

7.3 mm²/s

600.0 °C

5.9 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

2.24E-7 Ω·m

100.0 °C

2.71E-7 Ω·m

200.0 °C

3.44E-7 Ω·m

300.0 °C

4.31E-7 Ω·m

400.0 °C

5.32E-7 Ω·m

500.0 °C

6.5E-7 Ω·m

600.0 °C

7.86E-7 Ω·m

Magnetic

PropertyValueComment

Curie temperature

770 °C

Typical for Low Carbon Steel

Chemical properties

PropertyValue

Aluminium

0.02 %

Carbon

0.08 - 0.2 %

Chromium

0.3 %

Copper

0.3 %

Manganese

0.9 - 1.5 %

Molybdenum

0.08 %

Nickel

0.3 %

Niobium

0.01 - 0.02 %

Nitrogen

0.01 %

Phosphorus

0.03 %

Silicon

0.4 %

Sulfur

0.01 - 0.025 %

Titanium

0.03 %

Vanadium

0.02 %


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