Grades
42CrMo4
Alloy quench and temper steel · EN 1.7225
Chromium and molybdenum give deep hardenability. Used for heavily loaded shafts, axles and fasteners.
Without heat treatment its advantage does not appear.
Chemical composition
| Element | % |
|---|---|
| C | 0,38 – 0,45 |
| Si | max 0,40 |
| Mn | 0,60 – 0,90 |
| Cr | 0,90 – 1,20 |
| Mo | 0,15 – 0,30 |
Mechanical properties
| Property | Value |
|---|---|
| Rp0,2 (MPa) | min 650 |
| Rm (MPa) | 900 – 1100 |
| A (%) | min 12 |
| HB | — |
| Density (g/cm³) | 7,85 |
| Magnetic | Yes |
Values are published EN 10088 ranges. The real figure for an order is on that heat certificate.