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EN 10273 10CrMo9-10 Steel – Normalized & Tempered (NT) for High‑Temperature Boiler Applications

The steel 10CrMo9-10 is a high temperature steel. Application: boiler construction for superheater and hot steam ducts, for collectors, and in apparatus construction in petrochemistry. Maximum temperature of use: 530 °C.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.84 - 7.85 g/cm³

Mechanical

PropertyTemperatureValue

Elastic modulus

-100.0 °C

217 GPa

20.0 °C

212 - 212.43 GPa

100.0 °C

207 - 207.49 GPa

200.0 °C

199 - 201.15 GPa

300.0 °C

192 - 193.89 GPa

400.0 °C

184 - 185.24 GPa

500.0 °C

174.89 - 175 GPa

600.0 °C

163.15 - 164 GPa

Elongation

20.0 °C

17 - 18 %

Poisson's ratio

20.0 °C

0.28 [-]

100.0 °C

0.29 [-]

200.0 °C

0.29 [-]

300.0 °C

0.29 [-]

400.0 °C

0.3 [-]

500.0 °C

0.31 [-]

600.0 °C

0.31 [-]

Shear modulus

20.0 °C

82.81 GPa

100.0 °C

80.65 GPa

200.0 °C

77.87 GPa

300.0 °C

74.93 GPa

400.0 °C

71.22 GPa

500.0 °C

66.9 GPa

600.0 °C

62.11 GPa

Tensile strength

20.0 °C

460 - 630 MPa

Yield strength

20.0 °C

250 - 310 MPa

Yield strength Rp0.2

50.0 °C

250 - 288 MPa

100.0 °C

237 - 266 MPa

150.0 °C

228 - 254 MPa

200.0 °C

222 - 248 MPa

250.0 °C

219 - 243 MPa

300.0 °C

213 - 236 MPa

350.0 °C

204 - 225 MPa

400.0 °C

191 - 212 MPa

450.0 °C

178 - 197 MPa

500.0 °C

167 - 185 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

-100.0 °C

1.05E-5 1/K

20.0 °C

1.15E-5 1/K

100.0 °C

1.21E-5 1/K

200.0 °C

1.27E-5 1/K

300.0 °C

1.32E-5 1/K

400.0 °C

1.36E-5 1/K

500.0 °C

1.4E-5 1/K

600.0 °C

1.44E-5 1/K

Max service temperature, long

400 - 550 °C

Melting point

1382 - 1529 °C

Typical for Chromium Molybdenum 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

34.9 W/(m·K)

100.0 °C

37.3 W/(m·K)

200.0 °C

38.2 W/(m·K)

300.0 °C

37.8 W/(m·K)

400.0 °C

36.6 W/(m·K)

500.0 °C

35.2 W/(m·K)

600.0 °C

33.6 W/(m·K)

Thermal diffusivity

20.0 °C

9.7 mm²/s

100.0 °C

9.6 mm²/s

200.0 °C

9.2 mm²/s

300.0 °C

8.5 mm²/s

400.0 °C

7.8 mm²/s

500.0 °C

6.8 mm²/s

600.0 °C

5.7 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

2.98E-7 Ω·m

100.0 °C

3.43E-7 Ω·m

200.0 °C

4.13E-7 Ω·m

300.0 °C

4.97E-7 Ω·m

400.0 °C

5.95E-7 Ω·m

500.0 °C

7.03E-7 Ω·m

600.0 °C

8.25E-7 Ω·m

Chemical properties

PropertyValue

Carbon

0.08 - 0.14 %

Chromium

2 - 2.5 %

Copper

0.3 %

Manganese

0.4 - 0.8 %

Molybdenum

0.9 - 1.1 %

Nitrogen

0.01 %

Phosphorus

0.02 - 0.03 %

Silicon

0.5 %

Sulfur

0.01 - 0.025 %


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