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DIN 17440 X2CrNiN18-10: High‑Yield, Nitrogen‑Enhanced Austenitic Steel (Quenched Grade +Q)

Properties - austenitic CrNi-steel - because of addition of nitrogen gets higher yield strength, which is resistant to higher temperature, used in pressure tank construction and light constructions - N-content lets increase the corrosion resistance - good able for cold forming - high polishable Application: - low temperature toughness up to -270°C, because of this applicable in refrigeration engineering - suitable for chemical constructions, because of its resistance to nitric acid and other oxidising media - for pressure tank construction up to 300°C, above 300°C subjects to authorisation

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

20.0 °C

35 - 40 %

Elongation A80

20.0 °C

35 %

Elongation A80, transverse

20.0 °C

40 %

Elongation, transverse

20.0 °C

30 - 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 - 760 MPa

50.0 °C

550 - 750 MPa

Tensile strength, transverse

20.0 °C

550 - 760 MPa

Yield strength Rp0.2

20.0 °C

270 MPa

50.0 °C

245 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 MPa

Yield strength Rp1.0

20.0 °C

305 MPa

50.0 °C

280 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

305 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

1.7E-5 - 1.72E-5 1/K

300.0 °C

1.7E-5 - 1.77E-5 1/K

400.0 °C

1.8E-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 - 0.03 %


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