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(submitted by the website administration)
| SAE 4130 | ||||
| Chemical composition: C=0.30%, Mn=0.5%, Mo=0.20%, Cr=1.0% | ||||
| Property | Value in metric unit | Value in US unit | ||
| Density | 7.872 *10³ | kg/m³ | 491.4 | lb/ft³ |
|---|---|---|---|---|
| Modulus of elasticity | 205 | GPa | 29700 | ksi |
| Thermal expansion (20 ºC) | 11.2*10-6 | ºCˉ¹ | 6.20*10-6 | in/(in* ºF) |
| Specific heat capacity | 477 | J/(kg*K) | 0.114 | BTU/(lb*ºF) |
| Thermal conductivity | 42.7 | W/(m*K) | 296 | BTU*in/(hr*ft²*ºF) |
| Electric resistivity | 2.23*10-7 | Ohm*m | 2.23*10-5 | Ohm*cm |
| Tensile strength (annealed) | 561 | MPa | 81300 | psi |
| Yield strength (annealed) | 361 | MPa | 52300 | psi |
| Elongation (annealed) | 28 | % | 28 | % |
| Hardness (annealed) | 82 | RB | 82 | RB |
| Tensile strength (normalized) | 669 | MPa | 97000 | psi |
| Yield strength (normalized) | 436 | MPa | 63300 | psi |
| Elongation (normalized) | 25 | % | 25 | % |
| Hardness (normalized) | 93 | RB | 93 | RB |
