8620 is a low-alloy steel grade that combines nickel, chromium, and molybdenum. It’s known for having good internal strength, excellent toughness, and exceptional flexibility. Its low carbon content makes this steel grade highly workable and weldable. 8620 steel is primarily used in gear and engine construction because it can withstand high pressure and stress.
| Chemical Properties | |
|---|---|
| Carbon | 0.18 – 0.23 |
| Manganese | 0.70 – 0.90 |
| Chromium | 0.40 – 0.60 |
| Silicon | 0.20 – 0.35 |
| Nickel | 0.40 – 0.70 |
| Molybdenum | 0.15 – 0.25 |
| Phosphorus | 0.035 (max) |
| Sulfur | 0.04 (max) |
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