Martensitic stainless steel

Martensitic stainless steels are a family of stainless steels having body-centered tetragonal (BCT) crystal structure and a predominately martensite structure. They are characterized by being magnetic and having the ability to be hardened through heat treatment. Martensitic stainless steels are designated as part of the 400-series of stainless steels in the SAE steel grades numbering system.

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