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X6CrNiTiB18-10 Grade – EN 10028-7 Solution Annealed (+AT) High‑Temperature Austenitic Steel

The austenitic steel X6CrNiTiB18-10 is a high temperature resistant steel for pressure vessels and steam-boiler construction as well as power plant engineering. The material is resistant to intercrystalline corrosion, also in the sensitized condition. The steel is according to DIN EN 10095 usable as heat resistant steel.

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

40 %

Elongation, transverse

20.0 °C

40 %

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

490 - 710 MPa

50.0 °C

460 MPa

100.0 °C

410 MPa

150.0 °C

390 MPa

200.0 °C

370 MPa

250.0 °C

360 MPa

300.0 °C

350 MPa

350.0 °C

345 MPa

400.0 °C

340 MPa

450.0 °C

335 MPa

500.0 °C

330 MPa

550.0 °C

320 MPa

600.0 °C

300 MPa

Tensile strength, transverse

20.0 °C

490 - 710 MPa

Yield strength Rp0.2

50.0 °C

186 MPa

100.0 °C

162 MPa

150.0 °C

152 MPa

200.0 °C

142 MPa

250.0 °C

137 MPa

300.0 °C

132 MPa

350.0 °C

127 MPa

400.0 °C

123 MPa

450.0 °C

118 MPa

500.0 °C

113 MPa

550.0 °C

108 MPa

600.0 °C

103 MPa

Yield strength Rp0.2, transverse

20.0 °C

200 - 220 MPa

Yield strength Rp1.0

50.0 °C

225 MPa

100.0 °C

201 MPa

150.0 °C

191 MPa

200.0 °C

181 MPa

250.0 °C

176 MPa

300.0 °C

172 MPa

350.0 °C

167 MPa

400.0 °C

162 MPa

450.0 °C

157 MPa

500.0 °C

152 MPa

550.0 °C

147 MPa

600.0 °C

142 MPa

Yield strength Rp1.0, transverse

20.0 °C

240 - 250 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

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

Boron

1.5E-3 - 5E-3 %

Carbon

0.04 - 0.08 %

Chromium

17 - 19 %

Manganese

2 %

Nickel

9 - 12 %

Phosphorus

0.04 %

Silicon

1 %

Sulfur

0.015 %

Titanium

0.8 %


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