Inconel Filler Metal 72 is used for gas tungsten arc welding of Inconel alloy 671 (Alloy Digest Ni-180, October 1972) or Incoclad 671/800 tubing (Alloy Digest Ni-544, September 1998). The alloy is resistant to flue gas corrosion. This datasheet provides information on composition and tensile properties. It also includes information on forming and joining. Filing Code: Ni-660. Producer or source: Special Metals Welding Products Company.