440A Stainless Steel
440A is a high carbon martensitic stainless steel that is AOD melted. This alloy can be heat treated to extremely high hardnesses. It has slightly less carbon than 440B and 440C giving it better machinability but less hardness. The combination of good wear resistance and high hardness makes this alloy an excellent candidate for cutting tools and knife blades. It also is often used for dental and surgical equipment.
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- AMS 5631
- ASTM A276
- ASTM F899
- Federal QQ-S-763
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- GE S-400, S-1000
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- UNS S44002
- Other Industrial Markets
- Stainless Steel
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