Carpenter Project 70 stainless type 347 is a modified version of type 347 stainless steel with improved machinability when compared to conventional type 347. The alloy is a nonhardenable austenitic chromium-nickel steel that is particularly adaptable for parts for use at temperatures between 427 and 899 C (800 and 1650 F). It is nonmagnetic in the annealed condition but is slightly magnetic in the cold-worked condition. Among its many applications are aircraft-engine exhaust manifolds, boiler shells, and high-temperature handling equipment. This datasheet provides information on composition, physical properties, and elasticity. It also includes information on corrosion resistance as well as forming. Filing Code: SS-730. Producer or source: Carpenter. Originally published October 1998, corrected November 1998.