4140 Q&T High Hardness
MIM 4140 is a low alloy steel with Chromium, Molybdenum and Manganese alloying elements. MIM 4140 has good hardenability, and when heat treated (Quenched & Tempered) to a high hardness condition, offers high strength, toughness, and wear-resistance. OptiMIM’s 4140 has higher tensile strength, yield strength and impact resistance than wrought 4140. This alloy is used in many industries, including automotive, aerospace, defense, and in structural and industrial components.
Mechanical Properties
Composition
| Low Alloy Steel | |
|---|---|
| % | 4140 Q&T High Hardness |
| Iron (max) | Balance |
| Nickel (max) | |
| Molybdenum | 0.2 - 0.3 |
| Silicon | 0.6 Max |
| 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 |
| Sulfur | 0.04 |
| RoHS Compliant | ✓ |
