ISO 4957 Grade C70W2 quenched (+Q)
ISO 4957 Grade C70W2 quenched (+Q) introduction
Full-harden diameter: approx. 10 mm
Application: compressed air plug-in tools
Equivalent material: GB T7, GOST U7-1, ISO TC70, PN N7, STAS OSC7, MSZ S72, DIN 1.1620, EN 1.1620
ISO 4957 Grade C70W2 quenched (+Q) general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 7.8 g/cm³ |
ISO 4957 Grade C70W2 quenched (+Q) 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 1370 - 1425 °C |
Typical for Tool And Machining 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 |
- |
ISO 4957 Grade C70W2 quenched (+Q) chemical
| Property |
Value |
| Carbon |
Carbon of 0.65 - 0.74 % |
| Manganese |
Manganese of 0.1 - 0.35 % |
| Phosphorus |
Phosphorus of 0.03 % |
| Silicon |
Silicon of 0.1 - 0.3 % |
| Sulfur |
Sulfur of 0.03 % |
ISO 4957 Grade C70W2 quenched (+Q) 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 |
ISO 4957 Grade C70W2 quenched (+Q) mechanical
| Property |
Temperature |
Value |
Comment |
| Elastic modulus |
-100.0 °C |
Elastic modulus of 217 GPa |
- |
| - |
20.0 °C |
Elastic modulus of 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 |
- |
| Poisson's ratio |
23.0 °C |
Poisson's ratio of 0.3 [-] |
Typical for Tool And Machining Steel |
| Shear modulus |
23.0 °C |
Shear modulus of 79 GPa |
Typical for Tool And Machining Steel |
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