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SEW 470: X10CrAlSi18 Soft-Annealed Steel – High-Temperature, Corrosion-Resistant Grade

The material X10CrAlSi18, mat. No 1.4742 is non-scaling up to max. 1000°C (highest application temp. in air). The steel is resistant to oxidizing, sulfureous gases and shows mean resistance in reducing and carburizing gases. Application for oven components, gadgetries and for single parts of mean mechanical load.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.56 - 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

15 %

Elongation A80

20.0 °C

13 %

Hardness, Brinell

20.0 °C

212 [-]

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

500 - 700 MPa

Yield strength Rp0.2

20.0 °C

270 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 - 1.08E-5 1/K

300.0 °C

1.12E-5 1/K

400.0 °C

1.15E-5 - 1.16E-5 1/K

500.0 °C

1.19E-5 1/K

600.0 °C

1.2E-5 - 1.21E-5 1/K

700.0 °C

1.24E-5 1/K

800.0 °C

1.25E-5 - 1.29E-5 1/K

1000.0 °C

1.35E-5 1/K

Max service temperature, long

0 - 900 °C

Melting point

1425 - 1530 °C

Typical for Ferritic Stainless Steel

Specific heat capacity

20.0 °C

450 - 500 J/(kg·K)

100.0 °C

482 J/(kg·K)

200.0 °C

506 J/(kg·K)

300.0 °C

525 J/(kg·K)

400.0 °C

547 J/(kg·K)

500.0 °C

576 J/(kg·K)

600.0 °C

616 J/(kg·K)

Thermal conductivity

20.0 °C

16 - 19 W/(m·K)

100.0 °C

17.2 W/(m·K)

200.0 °C

18.6 W/(m·K)

300.0 °C

20 W/(m·K)

400.0 °C

21.2 W/(m·K)

500.0 °C

22.3 - 25 W/(m·K)

600.0 °C

23.3 W/(m·K)

700.0 °C

24.1 W/(m·K)

800.0 °C

25.5 W/(m·K)

900.0 °C

26.9 W/(m·K)

1000.0 °C

28.3 W/(m·K)

Thermal diffusivity

20.0 °C

4.7 mm²/s

100.0 °C

4.5 mm²/s

200.0 °C

4.5 mm²/s

300.0 °C

4.6 mm²/s

400.0 °C

4.4 mm²/s

500.0 °C

4.1 mm²/s

600.0 °C

3.6 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

9.06E-7 - 9.3E-7 Ω·m

100.0 °C

9.42E-7 Ω·m

200.0 °C

9.87E-7 Ω·m

300.0 °C

1.03E-6 Ω·m

400.0 °C

1.08E-6 Ω·m

500.0 °C

1.12E-6 Ω·m

600.0 °C

1.18E-6 Ω·m

700.0 °C

1.22E-6 Ω·m

800.0 °C

1.24E-6 Ω·m

900.0 °C

1.26E-6 Ω·m

1000.0 °C

1.27E-6 Ω·m

Chemical properties

PropertyValue

Aluminium

0.7 - 1.2 %

Carbon

0.12 %

Chromium

17 - 19 %

Manganese

1 %

Phosphorus

0.04 %

Silicon

0.7 - 1.4 %

Sulfur

0.015 %


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