4140 Q&T Low Hardness
MIM 4140 is a low alloy steel with Chromium, Molybdenum and Manganese alloying elements. It can be heat treated with a quench & temper process to various hardness levels. Tempered to a lower hardness, the alloy exhibits good strength and ductility. OptiMIM’s 4140 has higher tensile strength, yield strength, and impact resistance than wrought 4140.
Mechanical Properties
Composition
| Low Alloy Steel | |
|---|---|
| % | 4140 Q&T Low Hardness |
| Iron (max) | Balance |
| Nickel (max) | |
| Molybdenum | 0.2 - 0.3 |
| Silicon | 0.6 |
| Carbon | 0.3 - 0.5 |
| Chromium | 0.8 - 1.2 |
| Cobalt | |
| Manganese | 1 Max |
| Copper | |
| Niobium | |
| Aluminum | |
| Magnesium | |
| Titanium | |
| Zirconium | |
| Niobium + Tantalum | - |
| Phosphorus | 0.035 Max |
| Sulfur | 0.04 |
| RoHS Compliant | ✓ |
