Ni-Hard Type 4 is a wear-resistant martensitic white iron with improved resistance to fracture under repeated impact. It is recommended for jaw crushers, hammer mills, pulverizers and similar heavy duty wear resistant components. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: CI-34. Producer or source: Alloy iron foundries.