13Cr Martensitic Stainless (var. 15)

13Cr Martensitic Stainless Steel (variant 15) is a hardened chromium-bearing iron alloy strengthened through martensitic transformation, with notable alloying additions of cobalt, molybdenum, and vanadium that enhance hardness and wear resistance. This material is primarily used in high-strength applications requiring corrosion resistance combined with superior hardness, such as precision cutting tools, turbine blades, and wear-critical components in aerospace and power generation. Engineers select this variant over standard martensitic stainless grades when extreme hardness and edge retention are essential, accepting lower ductility in exchange for exceptional performance in demanding mechanical and thermal environments.