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EN 10028‑7 X2CrNiN18‑7 Solution Annealed Steel (+AT) – High‑Strength, Low‑Carbon Austenitic Stainless for Advanced Applications

The austenitic steel X2CrNiN18-7 is a high-strength stainless ELC-steel (extra low carbon) for special applications. The corrosion resistance is comparable to 1.4311. Resistance to intercrystalline corrosion also in sensitized resp. welded condition. The material is well formable. Application: spring steel, construction, railway carriage engineering

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.9 - 7.92 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

Elongation

-196.0 °C

15 %

-150.0 °C

20 %

-80.0 °C

25 %

20.0 °C

35 %

Elongation A80, transverse

20.0 °C

35 %

Elongation, transverse

20.0 °C

40 %

Poisson's ratio

20.0 °C

0.28 [-]

Shear modulus

23.0 °C

77 GPa

Typical for Austenitic Stainless Steel

Tensile strength

-196.0 °C

1500 MPa

-150.0 °C

1320 MPa

-80.0 °C

1040 MPa

20.0 °C

650 - 850 MPa

50.0 °C

605 MPa

100.0 °C

530 MPa

150.0 °C

490 MPa

200.0 °C

460 MPa

250.0 °C

450 MPa

300.0 °C

440 MPa

350.0 °C

430 MPa

Tensile strength, transverse

20.0 °C

650 - 850 MPa

Yield strength Rp0.2

-196.0 °C

450 MPa

-150.0 °C

420 MPa

-80.0 °C

380 MPa

20.0 °C

330 MPa

50.0 °C

309 MPa

100.0 °C

265 MPa

150.0 °C

200 MPa

200.0 °C

185 MPa

250.0 °C

180 MPa

300.0 °C

170 MPa

350.0 °C

165 MPa

Yield strength Rp0.2, transverse

20.0 °C

330 - 350 MPa

Yield strength Rp1.0

-196.0 °C

490 MPa

-150.0 °C

450 MPa

-80.0 °C

410 MPa

20.0 °C

370 MPa

150.0 °C

235 MPa

200.0 °C

215 MPa

250.0 °C

210 MPa

300.0 °C

200 MPa

350.0 °C

195 MPa

Yield strength Rp1.0, transverse

20.0 °C

370 - 380 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

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)

Thermal conductivity

-100.0 °C

11.7 W/(m·K)

20.0 °C

14.5 - 15 W/(m·K)

100.0 °C

16 W/(m·K)

200.0 °C

17.6 W/(m·K)

300.0 °C

19.1 W/(m·K)

400.0 °C

20.4 W/(m·K)

500.0 °C

21.9 W/(m·K)

600.0 °C

23.3 W/(m·K)

700.0 °C

24.7 W/(m·K)

800.0 °C

26.1 W/(m·K)

Thermal diffusivity

-100.0 °C

3.7 mm²/s

20.0 °C

3.9 mm²/s

100.0 °C

4.3 mm²/s

200.0 °C

4.3 mm²/s

300.0 °C

4.6 mm²/s

400.0 °C

4.7 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

5.7 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

-100.0 °C

5.86E-7 Ω·m

20.0 °C

6.92E-7 - 7.3E-7 Ω·m

100.0 °C

7.58E-7 Ω·m

200.0 °C

8.36E-7 Ω·m

300.0 °C

9.07E-7 Ω·m

400.0 °C

9.73E-7 Ω·m

500.0 °C

1.02E-6 Ω·m

600.0 °C

1.06E-6 Ω·m

700.0 °C

1.1E-6 Ω·m

800.0 °C

1.13E-6 Ω·m

Chemical properties

PropertyValue

Carbon

0.03 %

Chromium

16.5 - 18.5 %

Manganese

2 %

Nickel

6 - 8 %

Nitrogen

0.1 - 0.2 %

Phosphorus

0.05 %

Silicon

1 %

Sulfur

0.015 %


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