DIN 1651 Grade 45SPb20 turned and quenched and tempered
DIN 1651 Grade 45SPb20 turned and quenched and tempered introduction
The fully killed machining steel 45 SPb 20 is used for mass parts of higher strength, especially for lower toughness demands cross-sectional. Its better machinable because of the Pb addition.
Application in the automotive engineering, toolbuilding, apparatus engineering (screws, nuts, smal parts).
Equivalent material: DIN 1.0757, DIN 46SPb20, AFNOR 46SPb20, BS 46SPb20, UNI 46SPb20, AISI 41L50, SAE 41L50, EN 46SPb20, EN 1.0757, ISO 46SPb20
DIN 1651 Grade 45SPb20 turned and quenched and tempered general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 7.85 g/cm³ |
DIN 1651 Grade 45SPb20 turned and quenched and tempered thermal
| Property |
Temperature |
Value |
Comment |
| Coefficient of thermal expansion |
100.0 °C |
Coefficient of thermal expansion of 1.1E-5 1/K |
- |
| - |
200.0 °C |
Coefficient of thermal expansion of 1.18E-5 1/K |
- |
| - |
400.0 °C |
Coefficient of thermal expansion of 1.32E-5 1/K |
- |
| Max service temperature |
- |
Max service temperature of 500 °C |
Typical for Carbon Steel |
| Melting point |
- |
Melting point of 1380 - 1514 °C |
Typical for Medium Carbon Steel |
| Specific heat capacity |
100.0 °C |
Specific heat capacity of 490 J/(kg·K) |
- |
| - |
200.0 °C |
Specific heat capacity of 530 J/(kg·K) |
- |
| - |
400.0 °C |
Specific heat capacity of 600 J/(kg·K) |
- |
| Thermal conductivity |
20.0 °C |
Thermal conductivity of 49 W/(m·K) |
- |
DIN 1651 Grade 45SPb20 turned and quenched and tempered chemical
| Property |
Value |
| Carbon |
Carbon of 0.42 - 0.5 % |
| Lead |
Lead of 0.15 - 0.35 % |
| Manganese |
Manganese of 0.7 - 1.1 % |
| Phosphorus |
Phosphorus of 0.06 % |
| Silicon |
Silicon of 0.1 - 0.3 % |
| Sulfur |
Sulfur of 0.18 - 0.25 % |
DIN 1651 Grade 45SPb20 turned and quenched and tempered electrical
| Property |
Temperature |
Value |
| Electrical resistivity |
20.0 °C |
Electrical resistivity of 1.2E-7 Ω·m |
DIN 1651 Grade 45SPb20 turned and quenched and tempered mechanical
| Property |
Temperature |
Value |
Comment |
| Elastic modulus |
20.0 °C |
Elastic modulus of 210 GPa |
- |
| - |
200.0 °C |
Elastic modulus of 193 GPa |
- |
| - |
300.0 °C |
Elastic modulus of 185 GPa |
- |
| - |
400.0 °C |
Elastic modulus of 175 GPa |
- |
| Elongation |
20.0 °C |
Elongation of 10 - 14 % |
- |
| Poisson's ratio |
23.0 °C |
Poisson's ratio of 0.29 [-] |
Typical for Medium Carbon Steel |
| Shear modulus |
20.0 °C |
Shear modulus of 81 GPa |
- |
| Tensile strength |
20.0 °C |
Tensile strength of 620 - 840 MPa |
- |
| Yield strength |
20.0 °C |
Yield strength of 375 - 480 MPa |
- |
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