440C has the highest carbon content in the 440 series of martensitic stainless steels, making it ideal for applications requiring exceptional hardness and wear resistance, including ball bearings, wear plates, and spindles. However, its higher carbon content reduces its corrosion resistance compared to other stainless steels with lower carbon content. In addition to its hardness, 440C is also known for its high tensile strength, good dimensional stability, and good edge retention.
| Chromium | <17 |
| Carbon | <1.1 |
| Manganese | <1.00 |
| Silicon | <1.00 |
| Molybdenum | <0.75 |
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