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CK45 Steel – EN 10277-5 Grade, Cold‑Drawn & Normalized

Steel CK 45 is suitable for mean strained parts of higher dimensions (heavy forged parts) and complexer forms in vehicle manufacturing and machine engineering (e.g. ship shafts, transmission parts, wheel hubs). Lowest application temp. -25 °C, favorable creep behaviour up to 480 °C.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.8 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

14 - 16 %

Poisson's ratio

23.0 °C

0.29 [-]

Typical for Medium Carbon Steel

Shear modulus

23.0 °C

75 - 80 GPa

Typical for Carbon Steel

Tensile strength

20.0 °C

580 - 620 MPa

Yield strength

20.0 °C

305 - 340 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

1.25E-5 1/K

200.0 °C

1.3E-5 1/K

300.0 °C

1.36E-5 1/K

400.0 °C

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 - 480 °C

Melting point

1380 - 1514 °C

Typical for Medium Carbon Steel

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

41.7 W/(m·K)

100.0 °C

43.4 W/(m·K)

200.0 °C

43.2 W/(m·K)

300.0 °C

41.4 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

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

0.42 - 0.5 %

Manganese

0.5 - 0.8 %

Phosphorus

0.04 %

Silicon

0.4 %

Sulfur

0.03 %


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    1. EN 10277-5 Grade Cm60: Cold-Drawn or Turned and Normalized Steel for High-Strain Applications
    2. EN 10277-5 Grade C35: Cold-Drawn or Turned, Normalized Steel for Automotive & Machine Applications
    3. EN 10277-5 Grade C45: Cold Drawn, Turned & Normalized Steel for Automotive & Machinery
    4. EN 10277‑5 Grade C60: Cold‑Drawn, Turned & Normalized Steel for High‑Ductility, Wear‑Resistant Automotive Parts
    5. EN 10277-5 Grade CK35: Cold‑Drawn, Turned & Normalized Steel for Automotive & Heavy‑Duty Applications
    6. EN 10277-5 Grade Ck60 Steel – Cold Drawn/Turned & Normalized for Heavy-Duty Applications
    7. EN 10277-5 Grade CM35 – Cold-Drawn/Turned & Normalized Steel for High-Performance Automotive Components
    8. EN 10277-5 Grade Cm45: Cold-Drawn, Turned, and Normalized Steel for Automotive & Industrial Applications
    9. EN 10277-5: Grade C22 Cold‑Drawn/Turned and Normalized Steel – Ideal for Low‑Strain Automotive Parts
    10. EN 10277-5 Grade CK22 – Cold-Drawn or Turned & Normalized Steel for Vehicle and Heavy Engineering Applications