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Grade X6CrNi18-10 Austenitic Steel – Solution Annealed (+AT) for High-Temperature Applications

The austenitic steel X6CrNi18-10 shows favorable high-temperature strength up to 650 °C. The material is not resistant to intercrystalline corrosion. The steel is according to DIN EN 10095 usable as heat resistant steel. Application: reactor engineering (natrium cooling circuit for fast breeder) as well as in steam-boiler construction and in the chemical industry

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.9 - 7.93 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

-100.0 °C

206 GPa

20.0 °C

196 - 200 GPa

100.0 °C

190 GPa

200.0 °C

182 - 185 GPa

300.0 °C

174 - 175 GPa

400.0 °C

166 - 170 GPa

500.0 °C

158 - 160 GPa

600.0 °C

150 - 155 GPa

700.0 °C

142 - 145 GPa

800.0 °C

134 - 140 GPa

900.0 °C

127 - 135 GPa

1000.0 °C

120 - 125 GPa

Elongation A80, transverse

20.0 °C

45 %

Elongation, transverse

20.0 °C

45 %

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

510 - 740 MPa

50.0 °C

484 MPa

100.0 °C

440 MPa

150.0 °C

410 MPa

200.0 °C

390 MPa

250.0 °C

385 MPa

300.0 °C

375 MPa

350.0 °C

375 MPa

400.0 °C

375 MPa

450.0 °C

370 MPa

500.0 °C

360 MPa

550.0 °C

330 MPa

600.0 °C

300 MPa

Tensile strength, transverse

20.0 °C

510 - 740 MPa

Yield strength Rp0.2

50.0 °C

178 MPa

100.0 °C

157 MPa

150.0 °C

142 MPa

200.0 °C

127 MPa

250.0 °C

117 MPa

300.0 °C

108 MPa

350.0 °C

103 MPa

400.0 °C

98 MPa

450.0 °C

93 MPa

500.0 °C

88 MPa

550.0 °C

83 MPa

600.0 °C

78 MPa

Yield strength Rp0.2, transverse

20.0 °C

190 - 230 MPa

Yield strength Rp1.0

50.0 °C

215 MPa

100.0 °C

191 MPa

150.0 °C

172 MPa

200.0 °C

157 MPa

250.0 °C

147 MPa

300.0 °C

137 MPa

350.0 °C

132 MPa

400.0 °C

127 MPa

450.0 °C

122 MPa

500.0 °C

118 MPa

550.0 °C

113 MPa

600.0 °C

108 MPa

Yield strength Rp1.0, transverse

20.0 °C

230 - 260 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

1.63E-5 - 1.67E-5 1/K

200.0 °C

1.69E-5 - 1.72E-5 1/K

300.0 °C

1.73E-5 - 1.77E-5 1/K

400.0 °C

1.78E-5 - 1.81E-5 1/K

500.0 °C

1.82E-5 - 1.84E-5 1/K

600.0 °C

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

700.0 °C

1.87E-5 - 1.91E-5 1/K

800.0 °C

1.94E-5 1/K

900.0 °C

1.97E-5 1/K

1000.0 °C

2E-5 1/K

Max service temperature, long

0 - 750 °C

Melting point

1230 - 1480 °C

Typical for Austenitic Stainless Steel

Specific heat capacity

-100.0 °C

440 J/(kg·K)

20.0 °C

450 - 472 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

14.3 - 17 W/(m·K)

100.0 °C

15.8 W/(m·K)

200.0 °C

17.5 W/(m·K)

300.0 °C

19 W/(m·K)

400.0 °C

20.5 W/(m·K)

500.0 °C

21.9 W/(m·K)

600.0 °C

23.3 W/(m·K)

700.0 °C

24.6 W/(m·K)

800.0 °C

26 W/(m·K)

900.0 °C

27.4 W/(m·K)

1000.0 °C

28.8 W/(m·K)

Thermal diffusivity

20.0 °C

3.8 mm²/s

100.0 °C

4 mm²/s

200.0 °C

4.2 mm²/s

300.0 °C

4.6 mm²/s

400.0 °C

4.8 mm²/s

500.0 °C

4.9 mm²/s

600.0 °C

5 mm²/s

700.0 °C

5.3 mm²/s

800.0 °C

5.6 mm²/s

900.0 °C

5.9 mm²/s

1000.0 °C

6 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

7.1E-7 Ω·m

100.0 °C

7.76E-7 Ω·m

200.0 °C

8.49E-7 Ω·m

300.0 °C

9.14E-7 Ω·m

400.0 °C

9.71E-7 Ω·m

500.0 °C

1.02E-6 Ω·m

600.0 °C

1.07E-6 Ω·m

700.0 °C

1.1E-6 Ω·m

800.0 °C

1.14E-6 Ω·m

900.0 °C

1.17E-6 Ω·m

1000.0 °C

1.19E-6 Ω·m

Chemical properties

PropertyValue

Carbon

0.04 - 0.08 %

Chromium

17 - 19 %

Manganese

2 %

Nickel

8 - 11 %

Nitrogen

0.1 - 0.11 %

Phosphorus

0.04 %

Silicon

1 %

Sulfur

0.015 %


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