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EN 10028-7 X6CrNiNb18-10 Austenitic Steel – Solution Annealed (± AT) – Superior Corrosion Resistance & Pressure Vessel Suitability

The austenitic steel X6CrNiNb18-10 is comparable to 1.4541 regarding the corrosion behaviour. The steel is resistant to intercrystalline corrosion even in sensitized condition. It shows a tendency to hot shortness for certain welding conditions. Permitted for pressure vessel construction up to 300 °C, up to 550 °C subject to certificate. Unsuited for mirror-polishing due to the Nb-content. Application: in high amount in chemical apparatus engineering, in foodstuff industry, in film and foto industry as well as for household objects

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 A80, transverse

20.0 °C

40 %

Elongation, transverse

20.0 °C

40 %

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

500 - 720 MPa

50.0 °C

476 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

500 - 720 MPa

Yield strength Rp0.2

50.0 °C

191 MPa

100.0 °C

177 MPa

150.0 °C

167 MPa

200.0 °C

157 MPa

250.0 °C

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

200 MPa

Yield strength Rp1.0

50.0 °C

229 MPa

100.0 °C

211 MPa

150.0 °C

196 MPa

200.0 °C

186 MPa

250.0 °C

177 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

Max service temperature, long

0 - 550 °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)

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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