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SEW 400 Grade X20CrMo13: Quenched & Tempered Steel for High-Temperature Applications

Steel X20CrMo13 shows increased thermal and corrosion resistance. Application in tempered condition at operating temperatures from 450 to 500 °C. for turbine blades, valve cones, valve seats in hot steam valves. The steel is suitable for mirror finishing. X20CrMo13 shows owing to the Mo-content higher thermal and corrosion resistance than the comparable steel 1.4021. No forming is designated.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.7 - 7.76 g/cm³

Mechanical

PropertyTemperatureValue

Elastic modulus

20.0 °C

217.68 - 220 GPa

100.0 °C

213 - 216 GPa

200.0 °C

206 - 209 GPa

300.0 °C

198 - 200 GPa

400.0 °C

190 - 192 GPa

500.0 °C

180 - 183 GPa

600.0 °C

167 GPa

Elongation

20.0 °C

14 %

Elongation, transverse

20.0 °C

10 %

Hardness, Brinell

20.0 °C

220 - 280 [-]

Hardness, Brinell, trans

20.0 °C

220 - 280 [-]

Poisson's ratio

20.0 °C

0.28 [-]

Shear modulus

20.0 °C

84.95 GPa

Tensile strength

20.0 °C

750 - 900 MPa

Tensile strength, transverse

20.0 °C

750 - 900 MPa

Yield strength

20.0 °C

550 MPa

Yield strength Rp0.2

50.0 °C

530 MPa

100.0 °C

520 MPa

150.0 °C

510 MPa

200.0 °C

500 MPa

250.0 °C

420 MPa

300.0 °C

480 MPa

350.0 °C

450 MPa

400.0 °C

410 MPa

Yield strength, transverse

20.0 °C

550 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

20.0 °C

1.02E-5 1/K

100.0 °C

1.04E-5 - 1.05E-5 1/K

200.0 °C

1.08E-5 - 1.09E-5 1/K

300.0 °C

1.12E-5 - 1.13E-5 1/K

400.0 °C

1.16E-5 1/K

500.0 °C

1.19E-5 - 1.2E-5 1/K

600.0 °C

1.22E-5 1/K

Max service temperature, long

0 - 500 °C

Melting point

1425 - 1530 °C

Typical for Ferritic Stainless Steel

Specific heat capacity

20.0 °C

430 - 439 J/(kg·K)

100.0 °C

474 J/(kg·K)

200.0 °C

498 J/(kg·K)

300.0 °C

517 J/(kg·K)

400.0 °C

538 J/(kg·K)

500.0 °C

564 J/(kg·K)

600.0 °C

598 J/(kg·K)

Thermal conductivity

20.0 °C

24 - 25 W/(m·K)

100.0 °C

24.4 W/(m·K)

200.0 °C

24.8 W/(m·K)

300.0 °C

25.1 W/(m·K)

400.0 °C

25.6 W/(m·K)

500.0 °C

26.1 W/(m·K)

600.0 °C

26.4 W/(m·K)

Thermal diffusivity

20.0 °C

7.1 mm²/s

100.0 °C

6.3 mm²/s

200.0 °C

6 mm²/s

300.0 °C

5.7 mm²/s

400.0 °C

5.4 mm²/s

500.0 °C

4.9 mm²/s

600.0 °C

4.1 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

6.03E-7 Ω·m

100.0 °C

6.68E-7 Ω·m

200.0 °C

7.43E-7 Ω·m

300.0 °C

8.17E-7 Ω·m

400.0 °C

8.9E-7 Ω·m

500.0 °C

9.62E-7 Ω·m

600.0 °C

1.04E-6 Ω·m

Chemical properties

PropertyValue

Carbon

0.17 - 0.22 %

Chromium

12 - 14 %

Manganese

1 %

Molybdenum

0.9 - 1.3 %

Nickel

1 %

Phosphorus

0.04 %

Silicon

1 %

Sulfur

0.015 %


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