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DIN 17440 Grade X20Cr13 Soft-Annealed Steel (+A): High-Performance Corrosion Resistance & Temperature Stability

Propertties: - good corrosion resistance to water and steam - is able for high gloss polishing - application temperature: -40 up to 550°C Application: - for construction elements, requiring higher strengths because higher mechanical loadings - axis, parts for pumps, plunger, valve cone, nozzle pin, propeller for ships - also for beater bars and surgical instruments

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.7 - 7.71 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

20.0 °C

216 - 222 GPa

100.0 °C

213 - 216 GPa

200.0 °C

207 - 209 GPa

300.0 °C

200 - 201 GPa

400.0 °C

192 GPa

500.0 °C

183 GPa

600.0 °C

174 GPa

Hardness, Brinell

20.0 °C

230 [-]

Hardness, Vickers

20.0 °C

230 [-]

Poisson's ratio

23.0 °C

0.3 [-]

Typical for Martensitic Stainless Steel

Shear modulus

23.0 °C

77 GPa

Typical for Martensitic Stainless Steel

Tensile strength

20.0 °C

740 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

20.0 °C

1.02E-5 1/K

100.0 °C

1.05E-5 1/K

200.0 °C

1.09E-5 - 1.1E-5 1/K

300.0 °C

1.13E-5 - 1.15E-5 1/K

400.0 °C

1.16E-5 - 1.2E-5 1/K

500.0 °C

1.2E-5 1/K

600.0 °C

1.22E-5 1/K

Max service temperature, long

-40 - 550 °C

Melting point

1370 - 1530 °C

Typical for Martensitic Stainless Steel

Specific heat capacity

20.0 °C

439 - 460 J/(kg·K)

100.0 °C

474 J/(kg·K)

200.0 °C

498 J/(kg·K)

300.0 °C

517 J/(kg·K)

400.0 °C

538 J/(kg·K)

500.0 °C

564 J/(kg·K)

600.0 °C

598 J/(kg·K)

Thermal conductivity

20.0 °C

24.6 - 30 W/(m·K)

100.0 °C

24.7 W/(m·K)

200.0 °C

25 W/(m·K)

300.0 °C

25.2 W/(m·K)

400.0 °C

25.5 W/(m·K)

500.0 °C

25.8 W/(m·K)

600.0 °C

26 W/(m·K)

Thermal diffusivity

20.0 °C

7.3 mm²/s

100.0 °C

6.4 mm²/s

200.0 °C

6.1 mm²/s

300.0 °C

5.8 mm²/s

400.0 °C

5.4 mm²/s

500.0 °C

4.8 mm²/s

600.0 °C

4.1 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

5.87E-7 - 6E-7 Ω·m

100.0 °C

6.55E-7 Ω·m

200.0 °C

7.38E-7 Ω·m

300.0 °C

8.19E-7 Ω·m

400.0 °C

8.96E-7 Ω·m

500.0 °C

9.7E-7 Ω·m

600.0 °C

1.04E-6 Ω·m

Chemical properties

PropertyValue

Carbon

0.16 - 0.25 %

Chromium

12 - 14 %

Manganese

1 - 1.5 %

Phosphorus

0.04 - 0.05 %

Silicon

1 %

Sulfur

0.015 - 0.03 %


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