EN 10083-2 Grade C55R quenched and tempered (+QT)

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Description

Steel C55R is suitable for parts requiring improved workability while maintaining constant strength qualities in vehicle manufacturing, engine and machine engeneering (e.g. gear wheels, shafts, pinions).

Related Standards

Equivalent Materials

This material data has been provided by WIAM.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.8 - 7.85 g/cm³

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Mechanical

PropertyTemperatureValueComment

Elastic modulus

-100.0 °C

217 GPa

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20.0 °C

210 - 212 GPa

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100.0 °C

205 - 207 GPa

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200.0 °C

195 - 199 GPa

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300.0 °C

185 - 192 GPa

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400.0 °C

175 - 184 GPa

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500.0 °C

175 GPa

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600.0 °C

164 GPa

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Elongation

20.0 °C

12 - 15 %

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Poisson's ratio

23.0 °C

0.29 [-]

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Typical for Medium Carbon Steel

Reduction of area

20.0 °C

30 - 40 %

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Shear modulus

20.0 °C

81 GPa

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Tensile strength

20.0 °C

700 - 950 MPa

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Yield strength

20.0 °C

420 - 550 MPa

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Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

-100.0 °C

1.08E-5 1/K

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20.0 °C

1.19E-5 1/K

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100.0 °C

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

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200.0 °C

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

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300.0 °C

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

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400.0 °C

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

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500.0 °C

1.45E-5 1/K

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600.0 °C

1.49E-5 1/K

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Max service temperature

500 °C

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Typical for Carbon Steel

Melting point

1380 - 1514 °C

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Typical for Medium Carbon Steel

Specific heat capacity

-100.0 °C

423 J/(kg·K)

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20.0 °C

460 - 461 J/(kg·K)

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100.0 °C

479 J/(kg·K)

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200.0 °C

499 J/(kg·K)

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300.0 °C

517 J/(kg·K)

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400.0 °C

536 J/(kg·K)

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500.0 °C

558 J/(kg·K)

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600.0 °C

587 J/(kg·K)

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Thermal conductivity

20.0 °C

41.7 - 52 W/(m·K)

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100.0 °C

43.4 - 50.6 W/(m·K)

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200.0 °C

43.2 - 48.1 W/(m·K)

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300.0 °C

41.4 - 45.7 W/(m·K)

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400.0 °C

39.1 W/(m·K)

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500.0 °C

36.7 W/(m·K)

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600.0 °C

34.1 W/(m·K)

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Thermal diffusivity

20.0 °C

11.6 mm²/s

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100.0 °C

11.3 mm²/s

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200.0 °C

10.5 mm²/s

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300.0 °C

9.5 mm²/s

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400.0 °C

8.3 mm²/s

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500.0 °C

7.1 mm²/s

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600.0 °C

5.8 mm²/s

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Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

1.2E-7 - 2.5E-7 Ω·m

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100.0 °C

2.95E-7 Ω·m

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200.0 °C

3.65E-7 Ω·m

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300.0 °C

4.53E-7 Ω·m

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400.0 °C

5.56E-7 Ω·m

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500.0 °C

6.74E-7 Ω·m

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600.0 °C

8.13E-7 Ω·m

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Chemical properties

PropertyValue

Carbon

0.52 - 0.6 %

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Chromium

0.4 %

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Copper

0.3 %

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Manganese

0.6 - 0.9 %

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Molybdenum

0.1 %

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Nickel

0.4 %

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Phosphorus

0.03 %

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Silicon

0.1 - 0.4 %

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Sulfur

0.02 - 0.04 %

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