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EN 10272 X2CrNiN23-4 Duplex Steel – Solution Annealed (+AT) – High Strength, Corrosion Resistance

The austenitic-ferritic steel grade X2CrNiN23-4 acc. to DIN EN 10272 : 2001-01is used for hot and cold formed rods for pressure vessels. The material is a stainless duplex-steel with high strength and hardness, very good resistance to general corrosion, pitting corrosion and particularly to stress corrosion. Furthermore it shows resistance to intercrystalline corrosion also in sensitized condition.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.8 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

20.0 °C

200 - 212 GPa

100.0 °C

194 - 206 GPa

200.0 °C

186 GPa

300.0 °C

180 GPa

Elongation

20.0 °C

25 %

Hardness, Brinell

20.0 °C

260 [-]

Poisson's ratio

23.0 °C

0.3 [-]

Typical for Duplex Stainless Steel

Shear modulus

23.0 °C

77 GPa

Typical for Duplex Stainless Steel

Tensile strength

20.0 °C

600 - 830 MPa

100.0 °C

540 MPa

150.0 °C

520 MPa

200.0 °C

500 MPa

250.0 °C

490 MPa

Yield strength Rp0.2

20.0 °C

400 MPa

100.0 °C

330 MPa

150.0 °C

300 MPa

200.0 °C

280 MPa

250.0 °C

265 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

100.0 °C

1.3E-5 - 1.33E-5 1/K

200.0 °C

1.35E-5 1/K

300.0 °C

1.4E-5 1/K

Max service temperature

300 °C

Typical for Duplex Stainless Steel

Melting point

1375 - 1450 °C

Typical for Duplex Stainless Steel

Specific heat capacity

20.0 °C

500 J/(kg·K)

Thermal conductivity

20.0 °C

13.4 - 15 W/(m·K)

100.0 °C

14.9 W/(m·K)

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

7.85E-7 - 8E-7 Ω·m

100.0 °C

8.44E-7 Ω·m

Chemical properties

PropertyValue

Carbon

0.03 %

Chromium

22 - 24 %

Copper

0.1 - 0.6 %

Manganese

2 %

Molybdenum

0.1 - 0.6 %

Nickel

3.5 - 5.5 %

Nitrogen

0.05 - 0.2 %

Phosphorus

0.04 %

Silicon

1 %

Sulfur

0.015 %


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