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SEW 470 Grade X10CrAlSi25: Soft-Annealed Steel for High-Temperature Applications

The material X10CrAlSi25, mat. No 1.4762 is a heat-resistant steel of max. scaling resistance at 1150 °C (highest application temp. in air). The steel is highly resistant to oxidizing, sulfureous athmosphere. Low resistance in nitrogenous, oxygen deficient gases. The temp. limit in permanent operation accounts for 1000 °C: The steel has 3 embrittlement spans: 475 °C, 600 to 850 °C and above 900 °C. Application for oven components, gadgetries, annealing boxes for components of low mechanical load.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.47 - 7.7 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

20.0 °C

218 GPa

100.0 °C

213 GPa

200.0 °C

206 GPa

300.0 °C

198 GPa

400.0 °C

190 GPa

500.0 °C

180 GPa

600.0 °C

167 GPa

700.0 °C

150 GPa

Elongation

20.0 °C

10 - 15 %

Elongation A80

20.0 °C

13 %

Hardness, Brinell

20.0 °C

223 [-]

Poisson's ratio

23.0 °C

0.3 [-]

Typical for Ferritic Stainless Steel

Shear modulus

23.0 °C

77 GPa

Typical for Ferritic Stainless Steel

Tensile strength

20.0 °C

520 - 720 MPa

Yield strength Rp0.2

20.0 °C

280 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

20.0 °C

9.9E-6 1/K

100.0 °C

1.03E-5 1/K

200.0 °C

1.05E-5 - 1.07E-5 1/K

300.0 °C

1.11E-5 1/K

400.0 °C

1.15E-5 1/K

500.0 °C

1.18E-5 - 1.2E-5 1/K

600.0 °C

1.2E-5 1/K

700.0 °C

1.24E-5 1/K

800.0 °C

1.2E-5 - 1.29E-5 1/K

900.0 °C

1.34E-5 1/K

1000.0 °C

1.35E-5 - 1.4E-5 1/K

Max service temperature, long

0 - 1000 °C

Melting point

1425 - 1530 °C

Typical for Ferritic Stainless Steel

Specific heat capacity

20.0 °C

457 - 500 J/(kg·K)

100.0 °C

498 J/(kg·K)

200.0 °C

534 J/(kg·K)

300.0 °C

555 J/(kg·K)

400.0 °C

577 J/(kg·K)

500.0 °C

605 J/(kg·K)

600.0 °C

648 J/(kg·K)

700.0 °C

656 J/(kg·K)

800.0 °C

657 J/(kg·K)

900.0 °C

657 J/(kg·K)

1000.0 °C

658 J/(kg·K)

Thermal conductivity

20.0 °C

14.2 - 17 W/(m·K)

100.0 °C

15.5 W/(m·K)

200.0 °C

17 W/(m·K)

300.0 °C

18.3 W/(m·K)

400.0 °C

19.7 W/(m·K)

500.0 °C

20.9 - 23 W/(m·K)

600.0 °C

21.9 W/(m·K)

700.0 °C

23.2 W/(m·K)

800.0 °C

24.6 W/(m·K)

900.0 °C

26.1 W/(m·K)

1000.0 °C

27.5 W/(m·K)

Thermal diffusivity

20.0 °C

4.2 mm²/s

100.0 °C

3.9 mm²/s

200.0 °C

3.9 mm²/s

300.0 °C

4 mm²/s

400.0 °C

4.1 mm²/s

500.0 °C

3.2 mm²/s

600.0 °C

3.9 mm²/s

700.0 °C

4.8 mm²/s

800.0 °C

5.1 mm²/s

900.0 °C

5.5 mm²/s

1000.0 °C

5.7 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

1.02E-6 - 1.1E-6 Ω·m

100.0 °C

1.05E-6 Ω·m

200.0 °C

1.09E-6 Ω·m

300.0 °C

1.12E-6 Ω·m

400.0 °C

1.16E-6 Ω·m

500.0 °C

1.2E-6 Ω·m

600.0 °C

1.24E-6 Ω·m

700.0 °C

1.27E-6 Ω·m

800.0 °C

1.28E-6 Ω·m

900.0 °C

1.3E-6 Ω·m

1000.0 °C

1.31E-6 Ω·m

Chemical properties

PropertyValue

Aluminium

1.2 - 1.7 %

Carbon

0.12 %

Chromium

23 - 26 %

Manganese

1 %

Phosphorus

0.04 %

Silicon

0.7 - 1.4 %

Sulfur

0.015 %


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