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EN 10272 Grade X6CrNiNb18-10 Solution-Annealed Steel for Pressure Vessel Applications

Steel grade X6CrNiNb18-10 acc. to DIN EN 10272 : 2001-01is used for hot and cold formed rods for pressure vessels. The corrosion properties are comparable to 1.4541. The steel is resistant to intercrystalline corrosion also on sensitized condition, but it shows tendency to hot shortness under certain welding conditions. The steel is unsuitable for mirror finishing due to Nb-content.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.9 - 7.93 g/cm³

Mechanical

PropertyTemperatureValue

Elastic modulus

-100.0 °C

206 GPa

20.0 °C

196 - 200 GPa

95.0 °C

194.43 GPa

100.0 °C

190 - 194 GPa

150.0 °C

189.61 GPa

200.0 °C

182 - 186 GPa

205.0 °C

184.78 GPa

260.0 °C

179.95 GPa

300.0 °C

174 - 179 GPa

315.0 °C

175.13 GPa

370.0 °C

170.99 GPa

400.0 °C

166 - 172 GPa

425.0 °C

166.16 GPa

485.0 °C

161.34 GPa

500.0 °C

158 - 165 GPa

540.0 °C

157.2 GPa

595.0 °C

151.69 GPa

600.0 °C

150 GPa

650.0 °C

147.54 GPa

700.0 °C

142 GPa

705.0 °C

142.72 GPa

760.0 °C

137.9 GPa

800.0 °C

134 GPa

815.0 °C

133.76 GPa

870.0 °C

128.93 GPa

900.0 °C

127 GPa

1000.0 °C

120 GPa

Elongation

20.0 °C

40 %

Elongation, transverse

20.0 °C

30 %

Hardness, Brinell

20.0 °C

230 [-]

Hardness, Brinell, trans

20.0 °C

230 [-]

Poisson's ratio

20.0 °C

0.27 [-]

95.0 °C

0.28 [-]

150.0 °C

0.29 [-]

205.0 °C

0.29 [-]

260.0 °C

0.29 [-]

315.0 °C

0.3 [-]

370.0 °C

0.31 [-]

425.0 °C

0.31 [-]

485.0 °C

0.32 [-]

540.0 °C

0.33 [-]

595.0 °C

0.33 [-]

650.0 °C

0.32 [-]

705.0 °C

0.33 [-]

760.0 °C

0.35 [-]

815.0 °C

0.35 [-]

870.0 °C

0.36 [-]

Shear modulus

20.0 °C

78.6 GPa

95.0 °C

75.84 GPa

150.0 °C

73.77 GPa

205.0 °C

71.71 GPa

260.0 °C

69.64 GPa

315.0 °C

67.57 GPa

370.0 °C

65.5 GPa

425.0 °C

63.43 GPa

485.0 °C

61.36 GPa

540.0 °C

59.3 GPa

595.0 °C

57.23 GPa

650.0 °C

55.85 GPa

705.0 °C

53.78 GPa

760.0 °C

51.11 GPa

815.0 °C

49.64 GPa

870.0 °C

47.57 GPa

Tensile strength

20.0 °C

510 - 740 MPa

100.0 °C

435 MPa

150.0 °C

400 MPa

200.0 °C

370 MPa

250.0 °C

350 MPa

300.0 °C

340 MPa

350.0 °C

335 MPa

400.0 °C

330 MPa

450.0 °C

320 MPa

500.0 °C

310 MPa

550.0 °C

300 MPa

Tensile strength, transverse

20.0 °C

510 - 740 MPa

Yield strength Rp0.2

20.0 °C

205 MPa

100.0 °C

175 MPa

150.0 °C

165 MPa

200.0 °C

155 MPa

250.0 °C

145 - 147 MPa

300.0 °C

136 MPa

350.0 °C

130 MPa

400.0 °C

125 MPa

450.0 °C

121 MPa

500.0 °C

119 MPa

550.0 °C

118 MPa

Yield strength Rp0.2, transverse

20.0 °C

205 MPa

Yield strength Rp1.0

20.0 °C

240 MPa

100.0 °C

210 MPa

150.0 °C

195 MPa

200.0 °C

185 MPa

250.0 °C

175 MPa

300.0 °C

167 MPa

350.0 °C

161 MPa

400.0 °C

156 MPa

450.0 °C

152 MPa

500.0 °C

149 MPa

550.0 °C

147 MPa

Yield strength Rp1.0, transverse

20.0 °C

240 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

1.6E-5 - 1.67E-5 1/K

200.0 °C

1.65E-5 - 1.72E-5 1/K

300.0 °C

1.7E-5 - 1.77E-5 1/K

400.0 °C

1.75E-5 - 1.81E-5 1/K

425.0 °C

1.76E-5 1/K

485.0 °C

1.78E-5 1/K

500.0 °C

1.8E-5 - 1.84E-5 1/K

540.0 °C

1.8E-5 1/K

595.0 °C

1.83E-5 1/K

600.0 °C

1.88E-5 1/K

650.0 °C

1.85E-5 1/K

700.0 °C

1.91E-5 1/K

705.0 °C

1.87E-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

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)

900.0 °C

565 J/(kg·K)

1000.0 °C

571 J/(kg·K)

Thermal conductivity

20.0 °C

14.3 - 15 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 - 7.3E-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

0.08 %

Chromium

17 - 19 %

Manganese

2 %

Nickel

9 - 12 %

Niobium

1 %

Phosphorus

0.05 %

Silicon

1 %

Sulfur

0.015 %


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