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EN 10028-7 Grade X3CrNiMoBN17-13-3 – Solution Annealed + AT – High-Performance Austenitic Steel

The nitrogen-alloyed austenitic steel X3CrNiMoBN17-13-3 is applicated for superheater and hot steam tubes, collectors, heat-exchanger and other high loaded parts in power plant engineering as well as for pressure vessel and steam boiler construction in chemical industry. The material is resistant to intercrystalline corrosion, also in the sensitized condition.

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 - 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

35 %

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

550 - 780 MPa

50.0 °C

529 MPa

100.0 °C

495 MPa

150.0 °C

472 MPa

200.0 °C

450 MPa

250.0 °C

440 MPa

300.0 °C

430 MPa

350.0 °C

425 MPa

400.0 °C

420 MPa

450.0 °C

410 MPa

500.0 °C

400 MPa

550.0 °C

385 MPa

600.0 °C

365 MPa

Tensile strength, transverse

20.0 °C

550 - 780 MPa

Yield strength Rp0.2

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

Yield strength Rp0.2, transverse

20.0 °C

260 - 300 MPa

Yield strength Rp1.0

50.0 °C

277 MPa

100.0 °C

240 MPa

150.0 °C

220 MPa

200.0 °C

200 MPa

250.0 °C

189 MPa

300.0 °C

178 MPa

350.0 °C

171 MPa

400.0 °C

164 MPa

450.0 °C

160 MPa

500.0 °C

157 MPa

550.0 °C

154 MPa

600.0 °C

151 MPa

Yield strength Rp1.0, transverse

20.0 °C

300 - 330 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

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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