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EN 10088-1 Grade X20Cr13 Quenched & Tempered Steel – Durable, Corrosion-Resistant for High-Load Applications

Material X20Cr13 is comparable to X 20 Cr 13 acc. to DIN 17440 : 1985-07. This material is used for construction parts of higher strength with higher mechanical load, such as axles, shafts, pump components, piston rods, valve cones, nozzle needles, ships propellers, beater bars, surgical instruments. Good corrosion resistance to water and steam (turbine blades). The steel is suitable for mirror finishing. Appliction temperature -40 to 550 °C (for the comparable DIN-material).

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

8 - 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 - 1000 MPa

Tensile strength, transverse

20.0 °C

700 - 1000 MPa

Yield strength Rp0.2

20.0 °C

500 - 600 MPa

100.0 °C

460 MPa

150.0 °C

445 MPa

200.0 °C

430 MPa

250.0 °C

415 MPa

300.0 °C

395 MPa

350.0 °C

365 MPa

400.0 °C

330 MPa

Yield strength Rp0.2, transverse

20.0 °C

500 - 600 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

1.5 %

Phosphorus

0.04 %

Silicon

1 %

Sulfur

0.015 %


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