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SEW 470 Grade X8CrNiTi18-10 – Solution Annealed Steel for High-Temperature Mechanical Loads

Application for parts of high mechanical load, such as annealing bells, annealing cages, cementation and hardening boxes. Heat-resistanc: up to 850 °C (highest application temp. in air)

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.9 - 7.92 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

-100.0 °C

206 GPa

20.0 °C

196 GPa

100.0 °C

190 GPa

200.0 °C

182 GPa

300.0 °C

174 GPa

400.0 °C

166 GPa

500.0 °C

158 GPa

600.0 °C

150 GPa

700.0 °C

142 GPa

800.0 °C

134 GPa

Elongation

20.0 °C

40 %

Elongation A80

20.0 °C

40 %

Hardness, Brinell

20.0 °C

215 [-]

Poisson's ratio

23.0 °C

0.3 [-]

Typical for Austenitic Stainless Steel

Shear modulus

23.0 °C

77 GPa

Typical for Austenitic Stainless Steel

Tensile strength

20.0 °C

500 - 720 MPa

Yield strength Rp0.2

20.0 °C

190 MPa

Yield strength Rp1.0

20.0 °C

230 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

-100.0 °C

1.49E-5 1/K

20.0 °C

1.61E-5 1/K

100.0 °C

1.67E-5 1/K

200.0 °C

1.7E-5 - 1.72E-5 1/K

300.0 °C

1.77E-5 1/K

400.0 °C

1.8E-5 - 1.81E-5 1/K

500.0 °C

1.84E-5 1/K

600.0 °C

1.85E-5 - 1.88E-5 1/K

700.0 °C

1.91E-5 1/K

800.0 °C

1.9E-5 - 1.94E-5 1/K

Max service temperature, long

0 - 850 °C

Melting point

1230 - 1480 °C

Typical for Austenitic Stainless Steel

Specific heat capacity

-100.0 °C

440 J/(kg·K)

20.0 °C

472 - 500 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)

Thermal conductivity

20.0 °C

13.9 - 15 W/(m·K)

100.0 °C

15.4 W/(m·K)

200.0 °C

17.2 W/(m·K)

300.0 °C

18.7 W/(m·K)

400.0 °C

20.2 W/(m·K)

500.0 °C

21.6 W/(m·K)

600.0 °C

23 W/(m·K)

700.0 °C

24.4 W/(m·K)

800.0 °C

25.8 W/(m·K)

Thermal diffusivity

20.0 °C

3.7 mm²/s

100.0 °C

3.9 mm²/s

200.0 °C

4.2 mm²/s

300.0 °C

4.5 mm²/s

400.0 °C

4.7 mm²/s

500.0 °C

4.8 mm²/s

600.0 °C

5 mm²/s

700.0 °C

5.3 mm²/s

800.0 °C

5.6 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

7.3E-7 - 7.35E-7 Ω·m

100.0 °C

8E-7 Ω·m

200.0 °C

8.68E-7 Ω·m

300.0 °C

9.33E-7 Ω·m

400.0 °C

9.89E-7 Ω·m

500.0 °C

1.04E-6 Ω·m

600.0 °C

1.08E-6 Ω·m

700.0 °C

1.12E-6 Ω·m

800.0 °C

1.15E-6 Ω·m

Chemical properties

PropertyValue

Carbon

0.1 %

Chromium

17 - 19 %

Manganese

2 %

Nickel

9 - 12 %

Phosphorus

0.05 %

Silicon

1 %

Sulfur

0.015 %

Titanium

0.8 %


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