NICLOY 3 1/2 is a low carbon, nickel ferritic steel recommended for low temperature service. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on low and high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: SA-102. Producer or source: Babcock & Wilcox Company.