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EN 10216-5 X8CrNiNb16-13 Solution-Annealed Steel (+AT) – High‑Temperature, Creep‑Resistant Alloy

Fully austenitic, high temperature special steel, creep resistant up to approximately 800 degrees C, resistant to scaling up to 750 degrees C. It is insensitive to inclination to embrittlement. It is used for heat work tools as well as a component in hydrogenation plants that is resistant to pressurized hydrogen at high temperatures. It is predominantly used for componants in thermal power plants (turbine and steam boiler production), valves, discs, parts of casings, and superheater, heat exchanger and steam ducts.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.9 - 7.98 g/cm³

50.0 °C

7.96 g/cm³

100.0 °C

7.94 g/cm³

150.0 °C

7.92 g/cm³

200.0 °C

7.9 g/cm³

250.0 °C

7.88 g/cm³

300.0 °C

7.86 g/cm³

350.0 °C

7.83 g/cm³

400.0 °C

7.81 g/cm³

450.0 °C

7.79 g/cm³

500.0 °C

7.76 g/cm³

550.0 °C

7.74 g/cm³

600.0 °C

7.71 g/cm³

650.0 °C

7.68 g/cm³

700.0 °C

7.66 g/cm³

750.0 °C

7.63 g/cm³

800.0 °C

7.61 g/cm³

Mechanical

PropertyTemperatureValue

Elastic modulus

-100.0 °C

206 GPa

20.0 °C

196 - 200 GPa

50.0 °C

197.57 GPa

100.0 °C

190 - 193.65 GPa

150.0 °C

189.43 GPa

200.0 °C

182 - 185 GPa

250.0 °C

180.11 GPa

300.0 °C

174 - 175.5 GPa

350.0 °C

170.89 GPa

400.0 °C

166 - 170 GPa

450.0 °C

162.26 GPa

500.0 °C

158 - 160 GPa

550.0 °C

154.02 GPa

600.0 °C

149.99 - 155 GPa

650.0 °C

146.07 GPa

700.0 °C

142 - 145 GPa

750.0 °C

138.32 GPa

800.0 °C

134 - 140 GPa

900.0 °C

127 - 135 GPa

1000.0 °C

120 - 125 GPa

Elongation

20.0 °C

35 %

Elongation, transverse

20.0 °C

22 %

Poisson's ratio

20.0 °C

0.28 [-]

50.0 °C

0.28 [-]

100.0 °C

0.28 [-]

150.0 °C

0.28 [-]

200.0 °C

0.29 [-]

250.0 °C

0.29 [-]

300.0 °C

0.29 [-]

350.0 °C

0.3 [-]

400.0 °C

0.3 [-]

450.0 °C

0.31 [-]

500.0 °C

0.31 [-]

550.0 °C

0.32 [-]

600.0 °C

0.32 [-]

650.0 °C

0.32 [-]

700.0 °C

0.32 [-]

750.0 °C

0.32 [-]

800.0 °C

0.33 [-]

Shear modulus

20.0 °C

77.01 - 78.09 GPa

50.0 °C

77.3 GPa

100.0 °C

75.73 GPa

150.0 °C

73.87 GPa

200.0 °C

71.91 GPa

250.0 °C

69.95 GPa

300.0 °C

67.89 GPa

350.0 °C

65.83 GPa

400.0 °C

63.96 GPa

450.0 °C

62.1 GPa

500.0 °C

60.33 GPa

550.0 °C

58.57 GPa

600.0 °C

56.9 GPa

650.0 °C

55.33 GPa

700.0 °C

53.86 GPa

750.0 °C

52.29 GPa

800.0 °C

50.82 GPa

Yield strength Rp0.2

20.0 °C

205 MPa

50.0 °C

197 MPa

100.0 °C

175 MPa

150.0 °C

166 MPa

200.0 °C

157 MPa

250.0 °C

147 MPa

300.0 °C

137 MPa

350.0 °C

132 MPa

400.0 °C

128 MPa

450.0 °C

123 MPa

500.0 °C

118 MPa

550.0 °C

118 MPa

Yield strength Rp0.2, transverse

20.0 °C

205 MPa

Yield strength Rp1.0

20.0 °C

245 MPa

50.0 °C

231 MPa

100.0 °C

205 MPa

150.0 °C

195 MPa

200.0 °C

186 MPa

250.0 °C

176 MPa

300.0 °C

167 MPa

350.0 °C

162 MPa

400.0 °C

157 MPa

450.0 °C

152 MPa

500.0 °C

147 MPa

550.0 °C

147 MPa

Yield strength Rp1.0, transverse

20.0 °C

245 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 - 800 °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

13.3 - 16 W/(m·K)

100.0 °C

14.9 W/(m·K)

200.0 °C

16.5 W/(m·K)

300.0 °C

18.1 W/(m·K)

400.0 °C

19.5 W/(m·K)

500.0 °C

21 W/(m·K)

600.0 °C

22.4 W/(m·K)

700.0 °C

23.8 W/(m·K)

800.0 °C

25.2 W/(m·K)

Thermal diffusivity

20.0 °C

3.5 mm²/s

100.0 °C

3.8 mm²/s

200.0 °C

4 mm²/s

300.0 °C

4.3 mm²/s

400.0 °C

4.5 mm²/s

500.0 °C

4.7 mm²/s

600.0 °C

4.8 mm²/s

700.0 °C

5.1 mm²/s

800.0 °C

5.4 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

7.38E-7 - 7.91E-7 Ω·m

50.0 °C

7.61E-7 Ω·m

100.0 °C

7.99E-7 - 8.45E-7 Ω·m

150.0 °C

8.38E-7 Ω·m

200.0 °C

8.72E-7 - 9.19E-7 Ω·m

250.0 °C

9.04E-7 Ω·m

300.0 °C

9.34E-7 - 9.77E-7 Ω·m

350.0 °C

9.63E-7 Ω·m

400.0 °C

9.91E-7 - 1.03E-6 Ω·m

450.0 °C

1.02E-6 Ω·m

500.0 °C

1.04E-6 - 1.08E-6 Ω·m

550.0 °C

1.06E-6 Ω·m

600.0 °C

1.08E-6 - 1.12E-6 Ω·m

650.0 °C

1.1E-6 Ω·m

700.0 °C

1.12E-6 - 1.15E-6 Ω·m

750.0 °C

1.14E-6 Ω·m

800.0 °C

1.15E-6 - 1.18E-6 Ω·m

Chemical properties

PropertyValue

Carbon

0.04 - 0.1 %

Chromium

15 - 17 %

Manganese

1.5 %

Nickel

12 - 14 %

Niobium

1.2 %

Phosphorus

0.04 %

Silicon

0.3 - 0.6 %

Sulfur

0.015 %


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