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EN 10085 Grade 15 CrMoV 5.9: Quenched & Tempered Steel for Durable Machine Components

The nitriding steel 15 CrMoV 5 9 can undergo quenchhardening and is used for machine parts that are subjected to wear and have a dimension of up to 250 mm. The steel contains a nitride agent (Cr) which contributes through the nitriding process or the nitro-carburization process with N or N and C to a higher: - case hardness - abrasion resistance - fatigue strength and - corrosion resistance. It is used for forged construction components: quench-hardened, mechanically processed and treated thermo-chemically (for example nitriding).

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.84 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

-100.0 °C

217 GPa

20.0 °C

212 GPa

100.0 °C

207 GPa

200.0 °C

199 GPa

300.0 °C

192 GPa

400.0 °C

184 GPa

500.0 °C

175 GPa

600.0 °C

164 GPa

Elongation

20.0 °C

10 - 12 %

Poisson's ratio

23.0 °C

0.3 [-]

Typical for Steel

Tensile strength

20.0 °C

850 - 1100 MPa

Yield strength

20.0 °C

700 - 750 MPa

Thermal

PropertyTemperatureValue

Coefficient of thermal expansion

-100.0 °C

1.05E-5 1/K

20.0 °C

1.15E-5 1/K

100.0 °C

1.21E-5 1/K

200.0 °C

1.27E-5 1/K

300.0 °C

1.32E-5 1/K

400.0 °C

1.36E-5 1/K

500.0 °C

1.4E-5 1/K

600.0 °C

1.44E-5 1/K

Specific heat capacity

-100.0 °C

423 J/(kg·K)

20.0 °C

461 J/(kg·K)

100.0 °C

479 J/(kg·K)

200.0 °C

499 J/(kg·K)

300.0 °C

517 J/(kg·K)

400.0 °C

536 J/(kg·K)

500.0 °C

558 J/(kg·K)

600.0 °C

587 J/(kg·K)

Thermal conductivity

20.0 °C

34.6 W/(m·K)

100.0 °C

36.9 W/(m·K)

200.0 °C

37.3 W/(m·K)

300.0 °C

36.9 W/(m·K)

400.0 °C

35.8 W/(m·K)

500.0 °C

34.4 W/(m·K)

600.0 °C

32.9 W/(m·K)

Thermal diffusivity

20.0 °C

9.6 mm²/s

100.0 °C

9.5 mm²/s

200.0 °C

9 mm²/s

300.0 °C

8.4 mm²/s

400.0 °C

7.6 mm²/s

500.0 °C

6.6 mm²/s

600.0 °C

5.5 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

3.01E-7 Ω·m

100.0 °C

3.47E-7 Ω·m

200.0 °C

4.23E-7 Ω·m

300.0 °C

5.09E-7 Ω·m

400.0 °C

6.08E-7 Ω·m

500.0 °C

7.19E-7 Ω·m

600.0 °C

8.43E-7 Ω·m

Chemical properties

PropertyValue

Carbon

0.13 - 0.18 %

Chromium

1.2 - 1.5 %

Manganese

0.8 - 1.1 %

Molybdenum

0.8 - 1.1 %

Phosphorus

0.03 %

Silicon

0.4 %

Sulfur

0.03 %

Vanadium

0.2 - 0.3 %


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