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EN 10277-2 Grade C50 Steel – Rolled & Turned Bright Steel for High‑Strength Applications

Steel C50 is suitable for parts of higher requirements to strength and wear resistance in vehicle, engine and machine engineering (e.g. shafts, hubs). Lowest application temperature -25 °C, most favorable application area 5 to 10 mm nominal size. As a bright steel product it is used in the form of bars, bright, straight, in various conditions (see DIN EN 10277 : 1999-10).

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.8 - 7.85 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

-100.0 °C

217 GPa

20.0 °C

210 - 212 GPa

100.0 °C

205 - 207 GPa

200.0 °C

195 - 199 GPa

300.0 °C

185 - 192 GPa

400.0 °C

175 - 184 GPa

500.0 °C

175 GPa

600.0 °C

164 GPa

Hardness, Brinell

20.0 °C

181 - 269 [-]

Poisson's ratio

23.0 °C

0.29 [-]

Typical for Medium Carbon Steel

Shear modulus

20.0 °C

81 GPa

Tensile strength

20.0 °C

610 - 910 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

-100.0 °C

1.08E-5 1/K

20.0 °C

1.19E-5 1/K

100.0 °C

1.11E-5 - 1.25E-5 1/K

200.0 °C

1.21E-5 - 1.3E-5 1/K

300.0 °C

1.29E-5 - 1.36E-5 1/K

400.0 °C

1.35E-5 - 1.41E-5 1/K

500.0 °C

1.45E-5 1/K

600.0 °C

1.49E-5 1/K

Max service temperature

500 °C

Typical for Carbon Steel

Max service temperature, long

-25 - 0 °C

Melting point

1380 - 1514 °C

Typical for Medium Carbon Steel

Specific heat capacity

-100.0 °C

423 J/(kg·K)

20.0 °C

460 - 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

41.7 - 52 W/(m·K)

100.0 °C

43.4 - 50.6 W/(m·K)

200.0 °C

43.2 - 48.1 W/(m·K)

300.0 °C

41.4 - 45.7 W/(m·K)

400.0 °C

39.1 W/(m·K)

500.0 °C

36.7 W/(m·K)

600.0 °C

34.1 W/(m·K)

Thermal diffusivity

20.0 °C

11.6 mm²/s

100.0 °C

11.3 mm²/s

200.0 °C

10.5 mm²/s

300.0 °C

9.5 mm²/s

400.0 °C

8.3 mm²/s

500.0 °C

7.1 mm²/s

600.0 °C

5.8 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

1.2E-7 - 2.5E-7 Ω·m

100.0 °C

2.95E-7 Ω·m

200.0 °C

3.65E-7 Ω·m

300.0 °C

4.53E-7 Ω·m

400.0 °C

5.56E-7 Ω·m

500.0 °C

6.74E-7 Ω·m

600.0 °C

8.13E-7 Ω·m

Chemical properties

PropertyValue

Carbon

0.47 - 0.55 %

Chromium

0.4 %

Manganese

0.6 - 0.9 %

Molybdenum

0.1 %

Nickel

0.4 %

Phosphorus

0.05 %

Silicon

0.4 %

Sulfur

0.045 %


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