1045 Carbon Steel Data
1045 is silicon killed with a higher carbon content for greater strength. Strength can be improved in the lighter and medium thicknesses by heat treatment. Machinability is good, while forming and welding properties are limited.
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Carbon: .43/.50
Manganese: .60/.90
Phosphorus: .04 max.
Sulphur: .05 max.
Tensile Strength: 82,000 psi.
Yield Strength: 45,000 psi.
Elongation in 2": 16%
Reduction in Area: 40%
Brinell Hardness: 163
| Physical Properties | Results |
| Density | 0.284 lb/in3 |
| Mechanical Properties | |
| Hardness, Brinell | 163 |
| Hardness, Rockwell B | 84 |
| Hardness, Vickers | 170 |
| Tensile Strength, Ultimate | 81900 psi |
| Tensile Strength, Yield | 45000 psi |
| Elongation at Break | 16 % |
| Reduction of Area | 40 % |
| Modulus of Elasticity | 29000 ksi |
| Bulk Modulus | 20300 ksi |
| Poisson's Ratio | 0.29 |
| Shear Modulus | 11600 ksi |
| Electrical Properties | |
| Electrical Resistivity | 1.62e-005 ohm-cm |
| Electrical Resistivity at Elevated Temperature | 2.23e-005 ohm-cm |
| Thermal Properties | |
| CTE, linear 20°C | 6.22 μin/in-°F |
| CTE, linear 250°C | 7 μin/in-°F |
| CTE, linear 500°C | 7.78 μin/in-°F |
| Specific Heat Capacity | 0.116 BTU/lb-°F |
| Thermal Conductivity | 360 BTU-in/hr-ft2-°F |