EN 10028-7 Grade X1NiCrMoCuN25-20-7 solution annealed (+AT)

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Description

The austenitic steel X1NiCrMoCuN25-20-7 is the stronger Mo-alloyed type of the 1.4539. The steel shows a very high resistance to crevice corrosion, pitting corrosion as well as to stress corrosion caused by pitting corrosion. It has the highest pitting index with 46. The material is resistant to intercrystalline corrosion, even in welded condition. Application: in higher chloride-contaminated media, e.g. in appropriate sulphur and phosphorus acids, furthermore in offshore engineering

Related Standards

Equivalent Materials

This material data has been provided by WIAM.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.76 - 8.1 g/cm³

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Mechanical

PropertyTemperatureValueComment

Elastic modulus

-100.0 °C

206 GPa

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20.0 °C

195 - 196 GPa

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100.0 °C

190 GPa

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200.0 °C

182 GPa

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300.0 °C

174 GPa

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400.0 °C

166 GPa

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500.0 °C

158 GPa

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600.0 °C

150 GPa

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700.0 °C

142 GPa

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800.0 °C

134 GPa

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900.0 °C

127 GPa

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1000.0 °C

120 GPa

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Elongation A80, transverse

20.0 °C

40 %

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Elongation, transverse

20.0 °C

40 %

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Poisson's ratio

23.0 °C

0.3 [-]

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Typical for Austenitic Stainless Steel

Shear modulus

23.0 °C

77 GPa

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Typical for Austenitic Stainless Steel

Tensile strength

20.0 °C

650 - 850 MPa

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50.0 °C

612 MPa

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100.0 °C

550 MPa

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150.0 °C

535 MPa

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200.0 °C

520 MPa

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250.0 °C

500 MPa

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300.0 °C

480 MPa

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350.0 °C

475 MPa

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Tensile strength, transverse

20.0 °C

650 - 850 MPa

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Yield strength Rp0.2

50.0 °C

274 MPa

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100.0 °C

230 MPa

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150.0 °C

210 MPa

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200.0 °C

190 MPa

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250.0 °C

180 MPa

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300.0 °C

170 MPa

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350.0 °C

165 MPa

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400.0 °C

160 MPa

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450.0 °C

130 MPa

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500.0 °C

120 MPa

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550.0 °C

105 MPa

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Yield strength Rp0.2, transverse

20.0 °C

300 MPa

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Yield strength Rp1.0

50.0 °C

314 MPa

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100.0 °C

270 MPa

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150.0 °C

245 MPa

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200.0 °C

225 MPa

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250.0 °C

215 MPa

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300.0 °C

205 MPa

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350.0 °C

195 MPa

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400.0 °C

190 MPa

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450.0 °C

160 MPa

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500.0 °C

150 MPa

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550.0 °C

135 MPa

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Yield strength Rp1.0, transverse

20.0 °C

320 - 340 MPa

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Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

-100.0 °C

1.49E-5 1/K

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20.0 °C

1.61E-5 1/K

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100.0 °C

1.58E-5 - 1.67E-5 1/K

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200.0 °C

1.61E-5 - 1.72E-5 1/K

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300.0 °C

1.65E-5 - 1.77E-5 1/K

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400.0 °C

1.69E-5 - 1.81E-5 1/K

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500.0 °C

1.73E-5 - 1.84E-5 1/K

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600.0 °C

1.88E-5 1/K

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700.0 °C

1.91E-5 1/K

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800.0 °C

1.94E-5 1/K

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900.0 °C

1.97E-5 1/K

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1000.0 °C

2E-5 1/K

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Melting point

1230 - 1480 °C

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Typical for Austenitic Stainless Steel

Specific heat capacity

-100.0 °C

440 J/(kg·K)

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20.0 °C

450 - 472 J/(kg·K)

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100.0 °C

487 J/(kg·K)

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200.0 °C

503 J/(kg·K)

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300.0 °C

512 J/(kg·K)

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400.0 °C

520 J/(kg·K)

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500.0 °C

530 J/(kg·K)

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600.0 °C

541 J/(kg·K)

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700.0 °C

551 J/(kg·K)

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800.0 °C

559 J/(kg·K)

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900.0 °C

565 J/(kg·K)

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1000.0 °C

571 J/(kg·K)

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Thermal conductivity

20.0 °C

11.9 - 12 W/(m·K)

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100.0 °C

13.3 W/(m·K)

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200.0 °C

15.1 W/(m·K)

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300.0 °C

16.7 W/(m·K)

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400.0 °C

18.3 W/(m·K)

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500.0 °C

19.8 W/(m·K)

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600.0 °C

21.3 W/(m·K)

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700.0 °C

22.8 W/(m·K)

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800.0 °C

24.3 W/(m·K)

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900.0 °C

25.7 W/(m·K)

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1000.0 °C

27.1 W/(m·K)

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Thermal diffusivity

20.0 °C

3.3 mm²/s

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100.0 °C

3.4 mm²/s

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200.0 °C

3.7 mm²/s

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300.0 °C

4.1 mm²/s

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400.0 °C

4.3 mm²/s

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500.0 °C

4.5 mm²/s

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600.0 °C

4.7 mm²/s

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700.0 °C

5 mm²/s

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800.0 °C

5.4 mm²/s

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900.0 °C

5.7 mm²/s

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1000.0 °C

5.8 mm²/s

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Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

9.59E-7 - 1E-6 Ω·m

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100.0 °C

1.01E-6 Ω·m

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200.0 °C

1.05E-6 Ω·m

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300.0 °C

1.1E-6 Ω·m

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400.0 °C

1.13E-6 Ω·m

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500.0 °C

1.17E-6 Ω·m

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600.0 °C

1.19E-6 Ω·m

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700.0 °C

1.22E-6 Ω·m

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800.0 °C

1.24E-6 Ω·m

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900.0 °C

1.26E-6 Ω·m

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1000.0 °C

1.28E-6 Ω·m

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Chemical properties

PropertyValue

Carbon

0.02 %

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Chromium

19 - 21 %

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Copper

0.5 - 1.5 %

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Manganese

1 %

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Molybdenum

6 - 7 %

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Nickel

24 - 26 %

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Nitrogen

0.15 - 0.25 %

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Phosphorus

0.03 %

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Silicon

0.5 %

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Sulfur

0.01 %

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