Zapp Ergste 1.4034YK is a medium-carbon, 13.5% Cr, martensitic stainless steel that is designed for applications requiring high strength and hardness, along with good corrosion resistance in moderately corrosive environments. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, machining, and joining. Filing Code: SS-1320. Producer or source: Zapp AG.