CarTech 420 is a hardenable, 13% chromium, martensitic stainless steel with higher strength and hardness, and better wear resistance than Type 410 stainless steel. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-1321. Producer or source: Carpenter Technology Corporation.