EN 10132-4 Grade Ck75 cold rolled, quenched and tempered (+C+QT)
EN 10132-4 Grade Ck75 cold rolled, quenched and tempered (+C+QT) introduction
The steel Ck 75 is used as cold rolled steel strip for springs with high dimensional accuracy and surface condition up to 2.0 mm thicknesses.
Equivalent material: AFNOR C75RR, BS CS80, ISO CS75, UNI C75, SS 1774, SAE 1075, DIN 1.1248, DIN C75S, AFNOR C75S, AFNOR XC75, BS 70CS, BS 70HS, BS 060A78, BS C75S, BS CS70, BS 80, AISI 1070, AISI 1075, AISI 1078, AISI 1074, SAE 1070, SAE 1078, SAE 1074, JIS S75CM, JIS SWRH77B, EN C75S, EN 1.1248, GOST 75, GOST 75A, GB/T 75, GB/T U20752, ASTM Grade 1074, ASTM Grade 1070M, UNS G10700, UNS G10750, UNS G10780, UNS G10740
EN 10132-4 Grade Ck75 cold rolled, quenched and tempered (+C+QT) general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 7.8 g/cm³ |
EN 10132-4 Grade Ck75 cold rolled, quenched and tempered (+C+QT) thermal
| Property |
Temperature |
Value |
Comment |
| Coefficient of thermal expansion |
-100.0 °C |
Coefficient of thermal expansion of 1.08E-5 1/K |
- |
| - |
20.0 °C |
Coefficient of thermal expansion of 1.19E-5 1/K |
- |
| - |
100.0 °C |
Coefficient of thermal expansion of 1.25E-5 1/K |
- |
| - |
200.0 °C |
Coefficient of thermal expansion of 1.3E-5 1/K |
- |
| - |
300.0 °C |
Coefficient of thermal expansion of 1.36E-5 1/K |
- |
| - |
400.0 °C |
Coefficient of thermal expansion of 1.41E-5 1/K |
- |
| - |
500.0 °C |
Coefficient of thermal expansion of 1.45E-5 1/K |
- |
| - |
600.0 °C |
Coefficient of thermal expansion of 1.49E-5 1/K |
- |
| Melting point |
- |
Melting point of 1289 - 1478 °C |
Typical for High Carbon Steel |
| Specific heat capacity |
-100.0 °C |
Specific heat capacity of 423 J/(kg·K) |
- |
| - |
20.0 °C |
Specific heat capacity of 461 J/(kg·K) |
- |
| - |
100.0 °C |
Specific heat capacity of 479 J/(kg·K) |
- |
| - |
200.0 °C |
Specific heat capacity of 499 J/(kg·K) |
- |
| - |
300.0 °C |
Specific heat capacity of 517 J/(kg·K) |
- |
| - |
400.0 °C |
Specific heat capacity of 536 J/(kg·K) |
- |
| - |
500.0 °C |
Specific heat capacity of 558 J/(kg·K) |
- |
| - |
600.0 °C |
Specific heat capacity of 587 J/(kg·K) |
- |
| Thermal conductivity |
20.0 °C |
Thermal conductivity of 41.7 W/(m·K) |
- |
| - |
100.0 °C |
Thermal conductivity of 43.4 W/(m·K) |
- |
| - |
200.0 °C |
Thermal conductivity of 43.2 W/(m·K) |
- |
| - |
300.0 °C |
Thermal conductivity of 41.4 W/(m·K) |
- |
| - |
400.0 °C |
Thermal conductivity of 39.1 W/(m·K) |
- |
| - |
500.0 °C |
Thermal conductivity of 36.7 W/(m·K) |
- |
| - |
600.0 °C |
Thermal conductivity of 34.1 W/(m·K) |
- |
| Thermal diffusivity |
20.0 °C |
Thermal diffusivity of 11.6 mm²/s |
- |
| - |
100.0 °C |
Thermal diffusivity of 11.3 mm²/s |
- |
| - |
200.0 °C |
Thermal diffusivity of 10.5 mm²/s |
- |
| - |
300.0 °C |
Thermal diffusivity of 9.5 mm²/s |
- |
| - |
400.0 °C |
Thermal diffusivity of 8.3 mm²/s |
- |
| - |
500.0 °C |
Thermal diffusivity of 7.1 mm²/s |
- |
| - |
600.0 °C |
Thermal diffusivity of 5.8 mm²/s |
- |
EN 10132-4 Grade Ck75 cold rolled, quenched and tempered (+C+QT) chemical
| Property |
Value |
| Carbon |
Carbon of 0.7 - 0.8 % |
| Manganese |
Manganese of 0.6 - 0.8 % |
| Phosphorus |
Phosphorus of 0.04 % |
| Silicon |
Silicon of 0.15 - 0.35 % |
| Sulfur |
Sulfur of 0.035 % |
EN 10132-4 Grade Ck75 cold rolled, quenched and tempered (+C+QT) electrical
| Property |
Temperature |
Value |
| Electrical resistivity |
20.0 °C |
Electrical resistivity of 2.5E-7 Ω·m |
| - |
100.0 °C |
Electrical resistivity of 2.95E-7 Ω·m |
| - |
200.0 °C |
Electrical resistivity of 3.65E-7 Ω·m |
| - |
300.0 °C |
Electrical resistivity of 4.53E-7 Ω·m |
| - |
400.0 °C |
Electrical resistivity of 5.56E-7 Ω·m |
| - |
500.0 °C |
Electrical resistivity of 6.74E-7 Ω·m |
| - |
600.0 °C |
Electrical resistivity of 8.13E-7 Ω·m |
EN 10132-4 Grade Ck75 cold rolled, quenched and tempered (+C+QT) mechanical
| Property |
Temperature |
Value |
Comment |
| Elastic modulus |
-100.0 °C |
Elastic modulus of 217 GPa |
- |
| - |
20.0 °C |
Elastic modulus of 206 - 212 GPa |
- |
| - |
100.0 °C |
Elastic modulus of 207 GPa |
- |
| - |
200.0 °C |
Elastic modulus of 199 GPa |
- |
| - |
300.0 °C |
Elastic modulus of 192 GPa |
- |
| - |
400.0 °C |
Elastic modulus of 184 GPa |
- |
| - |
500.0 °C |
Elastic modulus of 175 GPa |
- |
| - |
600.0 °C |
Elastic modulus of 164 GPa |
- |
| Hardness, Vickers |
20.0 °C |
Hardness, Vickers of 390 - 555 [-] |
- |
| Poisson's ratio |
20.0 °C |
Poisson's ratio of 0.29 [-] |
Typical for High Carbon Steel |
| Shear modulus |
20.0 °C |
Shear modulus of 78 GPa |
- |
| Tensile strength |
20.0 °C |
Tensile strength of 1320 - 1870 MPa |
- |
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