Chemical composition, mechanical properties, process notes and typical application areas of the low-alloy steel MIM-4605.
MIM-4605 is a low-alloy steel used in high-strength applications requiring good hardenability and dimensional precision. It is widely preferred in automotive and defense components such as trigger pins, locking parts and valve bodies.
| Element | Weight (%) |
|---|---|
| Fe | Balance |
| C | 0.4 – 0.6 |
| Ni | 1.5 – 2.0 |
| Mo | 0.2 – 0.3 |
| Mn | 0.4 – 0.6 |
| Si | ≤ 1.0 |
| Property | Typical Value | Condition / Notes |
|---|---|---|
| Density | 7.55 – 7.65 g/cm³ | Sintered at ~1350°C in H₂/N₂ atmosphere |
| Tensile Strength | 900 – 1050 MPa | As-sintered |
| Tensile Strength (HT) | 1200 – 1400 MPa | After carburizing + tempering |
| Yield Strength | 650 – 800 MPa | Varies with carbon level |
| Elongation | 5% – 10% | Decreases after heat treatment |
| Hardness | 28 – 36 HRC (sintered), up to 45 HRC (HT) | ~0.8% C potential |
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