WHAT ARE MARTENSITIC STAINLESS STEELS?
Martensitic stainless steels are stainless steels containing primarily about 12Cr and 0.2C. Actually there is a specific relation between C and Cr and that has to be maintained. Addition of other alloying elements may require changes in the percentages of C and Cr to obtain a martensitic structure. They solidify as martensite under normal cooling and exhibit martensitic structure at room temperature.