PARALLOY H39W is commonly known as HP Nb(Cb) modified and has excellent high temperature mechanical strength as well as resistance to carburization and oxidation. It is used in severe petrochemical service up to 1100 C (2010 F). This datasheet provides information on composition, physical properties, and tensile properties as well as creep. It also includes information on high temperature performance as well as casting. Filing Code: SS-591. Producer or source: Paralloy Ltd.