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EN 10250-4 Grade X20Cr13 Quenched & Tempered Steel – High Strength, Corrosion Resistant

Make X20Cr13 is comparable to X 20 Cr 13 acc. to DIN 17440 : 1985-07. The material is applicated for construction parts of higher strength and higher mechanical load, such as axles, shafts, pump components, piston rods, valve cones, nozzle needles, ship`s propeller, but also beater bars, surgical instruments. Favorable corrosion resistance to water and steam (turbine blades). The steel is usable for mirror finishing.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.7 - 7.71 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

20.0 °C

215 - 222 GPa

100.0 °C

212 - 216 GPa

200.0 °C

205 - 209 GPa

300.0 °C

200 - 201 GPa

400.0 °C

190 - 192 GPa

500.0 °C

183 GPa

600.0 °C

174 GPa

Elongation

20.0 °C

12 - 13 %

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

700 - 950 MPa

Yield strength Rp0.2

20.0 °C

500 - 600 MPa

100.0 °C

460 - 515 MPa

150.0 °C

445 - 495 MPa

200.0 °C

430 - 475 MPa

250.0 °C

415 - 460 MPa

300.0 °C

395 - 440 MPa

350.0 °C

365 - 405 MPa

400.0 °C

330 - 355 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

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 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

1.5 %

Phosphorus

0.04 %

Silicon

1 %

Sulfur

0.03 %


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