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to Properties of steels and cast irons
(submitted by the website administration)
| SAE 1045 | ||||
| Chemical composition: C=0.45%, Mn=0.75%, P=0.04% max, S=0.05% max | ||||
| Property | Value in metric unit | Value in US unit | ||
| Density | 7.872 *10³ | kg/m³ | 491.4 | lb/ft³ |
|---|---|---|---|---|
| Modulus of elasticity | 201 | GPa | 29100 | ksi |
| Thermal expansion (20 ºC) | 11.7*10-6 | ºCˉ¹ | 6.5*10-6 | in/(in* ºF) |
| Specific heat capacity | 486 | J/(kg*K) | 0.116 | BTU/(lb*ºF) |
| Thermal conductivity | 50.9 | W/(m*K) | 353 | BTU*in/(hr*ft²*ºF) |
| Electric resistivity | 1.62*10-7 | Ohm*m | 1.62*10-5 | Ohm*cm |
| Tensile strength (hot rolled) | 565 | MPa | 81900 | psi |
| Yield strength (hot rolled) | 310 | MPa | 45000 | psi |
| Elongation (hot rolled) | 16 | % | 16 | % |
| Hardness (hot rolled) | 84 | RB | 84 | RB |
| Tensile strength (cold drawn) | 625 | MPa | 90600 | psi |
| Yield strength (cold drawn) | 530 | MPa | 76900 | psi |
| Elongation (cold drawn) | 12 | % | 12 | % |
| Hardness (cold drawn) | 88 | RB | 88 | RB |
