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EN 10088-1 Grade X3CrNiMoN27-5-2: Solution‑Annealed (AT) – High‑Performance Ferritic Austenitic Steel

Material X3CrNiMoN27-5-2 is comparable to X 4 CrNiMoN 27 5 2 acc. to SEW400 : 1991. The ferritic austenitic steel shows low stress corrosion sensitivity. It has better general corrosion resistance than 1.4362 and is better machinable than austenite. The steel is characterized by high wear resistance and good running properties. It is suitable for mirror finishing. Therefore it is particularly suitable for shafts in acid pumps and for seawater loaded machine parts. Further application in acetic acid, photo, cellulose and dyeing industry. The material shows resistance to intercrystalline corrosion also in welded condition. Application temperature -60 to 350 °C (for the comparable DIN-material).

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.8 - 7.82 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

12 - 20 %

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

620 - 1030 MPa

Yield strength Rp0.2

20.0 °C

450 - 610 MPa

100.0 °C

360 MPa

150.0 °C

335 MPa

200.0 °C

310 MPa

250.0 °C

295 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

Max service temperature, long

-60 - 350 °C

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

0.05 %

Chromium

25 - 28 %

Manganese

2 %

Molybdenum

1.3 - 2 %

Nickel

4.5 - 6.5 %

Nitrogen

0.05 - 0.2 %

Phosphorus

0.04 %

Silicon

1 %

Sulfur

0.015 %


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