Alloy IN 939 was developed for turbine airfoils and has been used extensively in industrial gas turbines. However, the development of the alloy and the joining technology required for application to large structural components in aero engines includes risks. This datasheet covers a weldable version of the alloy. This datasheet provides information on composition and tensile properties. It also includes information on casting. Filing Code: Ni-719. Producer or source: Cannon-Muskegon Corporation.