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EN 10269 X3CrNiMoBN17-13-3 Solution Annealed Steel for Power Plant Superheaters and High‑Temperature Components

N-alloyed steel for application in power station engineering, for superheater and superheated steam conduits, headers, heat exchangers and other high-stress components. Application temperature in continuous operation: 800 °C The steel is insensitive to hot cracks (after welding). Further application for mounting elements at increased temperatures.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.98 - 8 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

-100.0 °C

206 GPa

20.0 °C

196 - 198 GPa

100.0 °C

190 - 192 GPa

200.0 °C

182 - 183 GPa

300.0 °C

174 - 175 GPa

400.0 °C

166 - 167 GPa

500.0 °C

158 - 159 GPa

600.0 °C

150 GPa

700.0 °C

142 GPa

800.0 °C

134 GPa

900.0 °C

127 GPa

1000.0 °C

120 GPa

Elongation

20.0 °C

35 %

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

550 - 750 MPa

50.0 °C

550 MPa

100.0 °C

520 MPa

150.0 °C

490 MPa

200.0 °C

460 MPa

250.0 °C

450 MPa

300.0 °C

440 MPa

350.0 °C

435 MPa

400.0 °C

435 MPa

450.0 °C

435 MPa

500.0 °C

430 MPa

550.0 °C

410 MPa

600.0 °C

380 MPa

Yield strength Rp0.2

20.0 °C

260 MPa

50.0 °C

239 MPa

100.0 °C

205 MPa

150.0 °C

187 MPa

200.0 °C

170 MPa

250.0 °C

159 MPa

300.0 °C

148 MPa

350.0 °C

141 MPa

400.0 °C

134 MPa

450.0 °C

130 MPa

500.0 °C

127 MPa

550.0 °C

124 MPa

600.0 °C

121 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

1.68E-5 - 1.72E-5 1/K

300.0 °C

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

400.0 °C

1.76E-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

1.91E-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

600 - 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

13.5 - 16 W/(m·K)

100.0 °C

15 W/(m·K)

200.0 °C

16.7 W/(m·K)

300.0 °C

18.3 W/(m·K)

400.0 °C

19.8 W/(m·K)

500.0 °C

21.2 W/(m·K)

600.0 °C

22.7 W/(m·K)

700.0 °C

24.1 W/(m·K)

800.0 °C

25.5 W/(m·K)

900.0 °C

26.9 W/(m·K)

1000.0 °C

28.3 W/(m·K)

Thermal diffusivity

20.0 °C

3.6 mm²/s

100.0 °C

3.8 mm²/s

200.0 °C

4 mm²/s

300.0 °C

4.4 mm²/s

400.0 °C

4.6 mm²/s

500.0 °C

4.7 mm²/s

600.0 °C

4.9 mm²/s

700.0 °C

5.2 mm²/s

800.0 °C

5.5 mm²/s

900.0 °C

5.8 mm²/s

1000.0 °C

5.9 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

7.7E-7 Ω·m

100.0 °C

8.34E-7 Ω·m

200.0 °C

9.03E-7 Ω·m

300.0 °C

9.64E-7 Ω·m

400.0 °C

1.02E-6 Ω·m

500.0 °C

1.06E-6 Ω·m

600.0 °C

1.1E-6 Ω·m

700.0 °C

1.13E-6 Ω·m

800.0 °C

1.17E-6 Ω·m

900.0 °C

1.19E-6 Ω·m

1000.0 °C

1.22E-6 Ω·m

Chemical properties

PropertyValue

Boron

1.5E-3 - 5E-3 %

Carbon

0.04 %

Chromium

16 - 18 %

Manganese

2 %

Molybdenum

2 - 3 %

Nickel

12 - 14 %

Nitrogen

0.1 - 0.18 %

Phosphorus

0.04 %

Silicon

0.75 %

Sulfur

0.015 %


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