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DIN 17440 X2CrNiMoN17-11-2 Austenitic Steel – Quenched Grade (+Q)

The full austenitic steel X2CrNiNoN17-11-2, mat. no. 1.4406, has an higher yield strength and structure stability also at higher temperatures and a better resistance to oxidising media because of the added N. The steel is resistant to intercrystalline and selective corrosion, both in the delivery condition and in the welded condition. According DIN 17440 : 1996-09 the material is used for flat products and rods (for pressure vessels), forgings and wires, acc. DIN 17441 : 1997-02 for cold rolled sheet and slit strip for pressure vessels. The limiting temperature (operating time up to 100000 h no intercrystalline corrosion) amounts to 400 degrees C. According to DIN 17440 : 1985-07 (X 2 CrNiMoN 17 12 2) resp. DIN EN 10088-1,-2,-3 : 1995-08 (X2CrNiMoN17-11-2) applies: application in the chemical apparatus construction for pressure vessels, in the cellulose industry, colour industry, cosmetic industry and textile industry, brewerys and milk plants. The material is high polishable.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.96 - 7.98 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 %

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

580 - 800 MPa

Tensile strength, transverse

20.0 °C

580 - 800 MPa

Yield strength Rp0.2

20.0 °C

280 MPa

50.0 °C

250 MPa

100.0 °C

211 MPa

150.0 °C

185 MPa

200.0 °C

167 MPa

250.0 °C

155 MPa

300.0 °C

145 MPa

350.0 °C

140 MPa

400.0 °C

135 MPa

450.0 °C

131 MPa

500.0 °C

129 MPa

550.0 °C

127 MPa

Yield strength Rp0.2, transverse

20.0 °C

280 MPa

Yield strength Rp1.0

20.0 °C

315 MPa

50.0 °C

284 MPa

100.0 °C

246 MPa

150.0 °C

218 MPa

200.0 °C

198 MPa

250.0 °C

183 MPa

300.0 °C

175 MPa

350.0 °C

169 MPa

400.0 °C

164 MPa

450.0 °C

160 MPa

500.0 °C

158 MPa

550.0 °C

157 MPa

Yield strength Rp1.0, transverse

20.0 °C

315 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

1.65E-5 - 1.67E-5 1/K

200.0 °C

1.72E-5 - 1.75E-5 1/K

300.0 °C

1.75E-5 - 1.77E-5 1/K

400.0 °C

1.81E-5 - 1.85E-5 1/K

500.0 °C

1.84E-5 - 1.85E-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

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

13.3 - 15 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

7.5E-7 - 7.91E-7 Ω·m

100.0 °C

8.45E-7 Ω·m

200.0 °C

9.19E-7 Ω·m

300.0 °C

9.77E-7 Ω·m

400.0 °C

1.03E-6 Ω·m

500.0 °C

1.08E-6 Ω·m

600.0 °C

1.12E-6 Ω·m

700.0 °C

1.15E-6 Ω·m

800.0 °C

1.18E-6 Ω·m

Chemical properties

PropertyValue

Carbon

0.03 %

Chromium

16.5 - 18.5 %

Manganese

2 %

Molybdenum

2 - 2.5 %

Nickel

10 - 12 %

Nitrogen

0.12 - 0.22 %

Phosphorus

0.05 %

Silicon

1 %

Sulfur

0.015 %


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