AISI 4140 Forged
Equivalent material: DIN 1.7225, JIS SCM440, DIN 42CrMo, SAE 4140
AISI 4140 Forged general
| Property |
Temperature |
Value |
| Density |
23.0 °C |
Density of 7.8 g/cm³ |
AISI 4140 Forged thermal
| Property |
Temperature |
Value |
Comment |
| Elastic modulus |
23.0 °C |
Elastic modulus of 200 - 210 GPa |
Typical for Steels |
| Elongation |
23.0 °C |
Elongation of 12 % |
- |
| Hardness, Brinell |
23.0 °C |
Hardness, Brinell of 217 [-] |
- |
| Poisson's ratio |
23.0 °C |
Poisson's ratio of 0.29 [-] |
Typical for Steels |
| Tensile strength |
23.0 °C |
Tensile strength of 1080 MPa |
- |
| Yield strength |
23.0 °C |
Yield strength of 550 MPa |
- |
AISI 4140 Forged chemical
| Property |
Value |
| Carbon |
Carbon of 0.4 - 0.45 % |
| Chromium |
Chromium of 0.8 - 1.1 % |
| Iron |
Balance |
| Manganese |
Manganese of 0.75 - 1 % |
| Molybdenum |
Molybdenum of 0.15 - 0.25 % |
| Phosphorus |
Phosphorus of 0.04 % |
| Silicon |
Silicon of 0.15 - 0.35 % |
| Sulfur |
Sulfur of 0.04 % |
AISI 4140 Forged electrical
| Property |
Temperature |
Value |
| Coefficient of thermal expansion |
23.0 °C |
Coefficient of thermal expansion of 1.22E-5 1/K |
| Thermal conductivity |
23.0 °C |
Thermal conductivity of 42.6 W/(m·K) |
AISI 4140 Forged mechanical
| Property |
Value |
Comment |
| Diameter |
Diameter of 20 - 800 mm |
- |
| Length |
Length of 2000 - 5800 mm |
- |
| Thickness |
Thickness of 800 mm |
max. |
| Width |
Width of 205 - 800 mm |
- |
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