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SEW 470 – X10CrAlSi13 Soft‑Annealed Grade for High‑Temperature Applications

The heat-resistant steel Stahl X10CrAlSi13, mat. No 1.4724 shows a max. application temperature of 850°C (highest application temp. in air). The material is resistant to oxidizing, sulfureous athmosphere and shows mean resistance to reducing and carburizing gases. Application for oven components, valves and thermometer sheath tubes.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.58 - 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

192 [-]

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

450 - 650 MPa

Yield strength Rp0.2

20.0 °C

250 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

20.0 °C

1.02E-5 1/K

100.0 °C

1.05E-5 1/K

200.0 °C

1.05E-5 - 1.09E-5 1/K

300.0 °C

1.13E-5 1/K

400.0 °C

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

500.0 °C

1.2E-5 1/K

600.0 °C

1.2E-5 - 1.22E-5 1/K

700.0 °C

1.24E-5 1/K

800.0 °C

1.25E-5 1/K

Max service temperature, long

0 - 800 °C

Melting point

1425 - 1530 °C

Typical for Ferritic Stainless Steel

Specific heat capacity

20.0 °C

439 - 500 J/(kg·K)

100.0 °C

474 J/(kg·K)

200.0 °C

492 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)

700.0 °C

647 J/(kg·K)

Thermal conductivity

20.0 °C

15.7 - 21 W/(m·K)

100.0 °C

17.1 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 - 23 W/(m·K)

600.0 °C

23.1 W/(m·K)

700.0 °C

23.8 W/(m·K)

Thermal diffusivity

20.0 °C

4.7 mm²/s

100.0 °C

4.5 mm²/s

200.0 °C

4.6 mm²/s

300.0 °C

4.7 mm²/s

400.0 °C

4.5 mm²/s

500.0 °C

4.3 mm²/s

600.0 °C

3.7 mm²/s

700.0 °C

3 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

7.5E-7 - 9.19E-7 Ω·m

100.0 °C

9.48E-7 Ω·m

200.0 °C

9.87E-7 Ω·m

300.0 °C

1.03E-6 Ω·m

400.0 °C

1.07E-6 Ω·m

500.0 °C

1.12E-6 Ω·m

600.0 °C

1.18E-6 Ω·m

700.0 °C

1.24E-6 Ω·m

Chemical properties

PropertyValue

Aluminium

0.7 - 1.2 %

Carbon

0.12 %

Chromium

12 - 14 %

Manganese

1 %

Phosphorus

0.04 %

Silicon

0.7 - 1.4 %

Sulfur

0.015 %


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