Type CK-20 is the 25-20 type corrosion resisting casting alloy. It has high degree of stability against intergranular corrosion. It is recommended for chemical plant equipment, oil refinery components and paper and pulp industry parts. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and creep. It also includes information on low and high temperature performance, and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: SS-191. Producer or source: Stainless steel foundries.