SEW 520 Grade G18CrMnMo5-5 quenched and tempered (+QT)
SEW 520 Grade G18CrMnMo5-5 quenched and tempered (+QT) introduction
The material G18CrMnMo5-5 is suitable for fusion welding and is considered to have a good weldability, since it has been successfully used with good results in cast - welded constructions, especially in combination with rolling mill and forged products made from quenchhardened high-strength fine-grain structural steels. In addition to high values for the 0.2% proof strength, the material distinguishes itself by relatively high values of the notch impact energy at the same time.
Application:
is chiefly applied in the mechanical engineering and the vehicle manufacturing, furthermore in the plant engineering and crane construction, in the offshore-technology as well as in the underground mining at climatically determined temperatures.
Equivalent material: DIN 1.7352, EN G18CrMnMo5-5, EN 1.7352
SEW 520 Grade G18CrMnMo5-5 quenched and tempered (+QT) general
| Property |
Temperature |
Value |
Comment |
| Density |
23.0 °C |
Density of 7.8 - 7.9 g/cm³ |
Typical for Chromium Molybdenum Steel |
SEW 520 Grade G18CrMnMo5-5 quenched and tempered (+QT) thermal
| Property |
Temperature |
Value |
Comment |
| Coefficient of thermal expansion |
23.0 °C |
Coefficient of thermal expansion of 1.1E-5 - 1.4E-5 1/K |
Typical for Chromium Molybdenum Steel |
| Melting point |
- |
Melting point of 1382 - 1529 °C |
Typical for Chromium Molybdenum Steel |
| Specific heat capacity |
23.0 °C |
Specific heat capacity of 448 - 502 J/(kg·K) |
Typical for Chromium Molybdenum Steel |
| Thermal conductivity |
23.0 °C |
Thermal conductivity of 36 - 43 W/(m·K) |
Typical for Chromium Molybdenum Steel |
SEW 520 Grade G18CrMnMo5-5 quenched and tempered (+QT) chemical
| Property |
Value |
| Carbon |
Carbon of 0.15 - 0.21 % |
| Chromium |
Chromium of 1.2 - 1.5 % |
| Manganese |
Manganese of 1.2 - 1.6 % |
| Molybdenum |
Molybdenum of 0.45 - 0.55 % |
| Phosphorus |
Phosphorus of 0.02 % |
| Silicon |
Silicon of 0.6 % |
| Sulfur |
Sulfur of 0.015 % |
SEW 520 Grade G18CrMnMo5-5 quenched and tempered (+QT) mechanical
| Property |
Temperature |
Value |
Comment |
| Elastic modulus |
23.0 °C |
Elastic modulus of 200 - 215 GPa |
Typical for Chromium Molybdenum Steel |
| Elongation |
20.0 °C |
Elongation of 12 % |
- |
| Poisson's ratio |
23.0 °C |
Poisson's ratio of 0.29 [-] |
Typical for Chromium Molybdenum Steel |
| Tensile strength |
20.0 °C |
Tensile strength of 730 - 970 MPa |
- |
| Yield strength |
20.0 °C |
Yield strength of 600 - 700 MPa |
- |
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