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SEW 470 X12NiCrSi35‑16 Solution‑Annealed Steel – High‑Temperature, Non‑Embrittling Grade for Furnace Applications

For components in furnace and apparatus engineering for high working temperatures, no embrittlement risk in the critical temperature range from 600 to 850 °C. (highest application temperature in air 1100 °C).

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.98 - 8 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

-100.0 °C

201 GPa

20.0 °C

194 GPa

100.0 °C

189 GPa

200.0 °C

183 GPa

300.0 °C

177 GPa

400.0 °C

170 GPa

500.0 °C

163 GPa

600.0 °C

156 GPa

700.0 °C

149 GPa

800.0 °C

141 GPa

900.0 °C

134 GPa

1000.0 °C

127 GPa

Elongation

20.0 °C

30 %

Elongation A80

20.0 °C

28 %

Hardness, Brinell

20.0 °C

223 [-]

Poisson's ratio

23.0 °C

0.3 [-]

Typical for Steel

Tensile strength

20.0 °C

550 - 750 MPa

Yield strength Rp0.2

20.0 °C

230 MPa

Yield strength Rp1.0

20.0 °C

270 MPa

Thermal

PropertyTemperatureValue

Coefficient of thermal expansion

-100.0 °C

1.36E-5 1/K

20.0 °C

1.46E-5 1/K

100.0 °C

1.51E-5 1/K

200.0 °C

1.5E-5 - 1.57E-5 1/K

300.0 °C

1.62E-5 1/K

400.0 °C

1.6E-5 - 1.66E-5 1/K

500.0 °C

1.7E-5 1/K

600.0 °C

1.7E-5 - 1.74E-5 1/K

700.0 °C

1.77E-5 1/K

800.0 °C

1.75E-5 - 1.8E-5 1/K

900.0 °C

1.83E-5 1/K

1000.0 °C

1.85E-5 - 1.86E-5 1/K

Max service temperature, long

0 - 1100 °C

Specific heat capacity

-100.0 °C

440 J/(kg·K)

20.0 °C

472 - 550 J/(kg·K)

100.0 °C

487 J/(kg·K)

200.0 °C

503 J/(kg·K)

300.0 °C

512 J/(kg·K)

400.0 °C

520 J/(kg·K)

500.0 °C

530 J/(kg·K)

600.0 °C

541 J/(kg·K)

700.0 °C

551 J/(kg·K)

800.0 °C

559 J/(kg·K)

900.0 °C

565 J/(kg·K)

1000.0 °C

571 J/(kg·K)

Thermal conductivity

20.0 °C

11.4 - 12.5 W/(m·K)

100.0 °C

12.8 W/(m·K)

200.0 °C

14.6 W/(m·K)

300.0 °C

16.3 W/(m·K)

400.0 °C

17.9 W/(m·K)

500.0 °C

17 - 19.5 W/(m·K)

600.0 °C

21 W/(m·K)

700.0 °C

22.6 W/(m·K)

800.0 °C

24.1 W/(m·K)

900.0 °C

25.6 W/(m·K)

1000.0 °C

27 W/(m·K)

Thermal diffusivity

20.0 °C

3 mm²/s

100.0 °C

3.2 mm²/s

200.0 °C

3.5 mm²/s

300.0 °C

4 mm²/s

400.0 °C

4.1 mm²/s

500.0 °C

4.3 mm²/s

600.0 °C

4.5 mm²/s

700.0 °C

4.8 mm²/s

800.0 °C

5.2 mm²/s

900.0 °C

5.5 mm²/s

1000.0 °C

5.6 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

1E-6 - 1.04E-6 Ω·m

100.0 °C

1.07E-6 Ω·m

200.0 °C

1.11E-6 Ω·m

300.0 °C

1.14E-6 Ω·m

400.0 °C

1.17E-6 Ω·m

500.0 °C

1.19E-6 Ω·m

600.0 °C

1.22E-6 Ω·m

700.0 °C

1.23E-6 Ω·m

800.0 °C

1.25E-6 Ω·m

900.0 °C

1.57E-6 Ω·m

1000.0 °C

1.29E-6 Ω·m

Chemical properties

PropertyValue

Carbon

0.15 %

Chromium

15 - 17 %

Manganese

2 %

Nickel

33 - 37 %

Nitrogen

0.11 %

Phosphorus

0.05 %

Silicon

1 - 2 %

Sulfur

0.015 %


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