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EN 10028-7 X2CrNiN18-10: Nitrogen‑Enhanced Austenitic Steel – Solution Annealed & Aged

The austenitic CrNi-steel X2CrNiN18-10 shows an by N-alloying increased yield point that remains even at higher temperatures. Used in pressure vessel construction and in leight weight construction. Corrosion resistance enhancement by N-content. Resistance to intercrystalline corrosion also in sensitized condition. Suitability for chemical apparatus engineering because of resistance to nitric acid and other oxidizing media. In pressure vessel construction (also in the beverage industry) approved up to 300 °C, otherwise subject to authorization. The steel is well cold formable and usable for mirror-polishing. Excellent suitability for refrigeration up to -270 °C due to its low temperature ductility.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.9 - 7.93 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

-100.0 °C

206 GPa

20.0 °C

196 - 200 GPa

100.0 °C

190 - 194 GPa

200.0 °C

182 - 186 GPa

300.0 °C

174 - 179 GPa

400.0 °C

166 - 172 GPa

500.0 °C

158 - 165 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

-196.0 °C

35 %

-150.0 °C

35 %

-80.0 °C

40 %

20.0 °C

40 %

Elongation A80

20.0 °C

40 %

Elongation A80, transverse

20.0 °C

40 %

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

-196.0 °C

1250 MPa

-150.0 °C

1050 MPa

-80.0 °C

850 MPa

20.0 °C

550 - 750 MPa

50.0 °C

527 MPa

100.0 °C

490 MPa

150.0 °C

460 MPa

200.0 °C

430 MPa

250.0 °C

420 MPa

300.0 °C

410 MPa

350.0 °C

410 MPa

Tensile strength, transverse

20.0 °C

550 - 750 MPa

Yield strength Rp0.2

-196.0 °C

550 MPa

-150.0 °C

450 MPa

-80.0 °C

350 MPa

20.0 °C

270 - 290 MPa

50.0 °C

246 MPa

100.0 °C

205 MPa

150.0 °C

175 MPa

200.0 °C

157 MPa

250.0 °C

145 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

270 - 290 MPa

Yield strength Rp1.0

-196.0 °C

650 MPa

-150.0 °C

550 MPa

-80.0 °C

420 MPa

20.0 °C

310 - 320 MPa

50.0 °C

284 MPa

100.0 °C

240 MPa

150.0 °C

210 MPa

200.0 °C

187 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

310 - 320 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

500.0 °C

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

600.0 °C

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

-270 - 300 °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

0.03 %

Chromium

17 - 19.5 %

Manganese

2 %

Nickel

8.5 - 11.5 %

Nitrogen

0.12 - 0.22 %

Phosphorus

0.05 %

Silicon

1 %

Sulfur

0.015 %


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