Nickel Alloy, Corrosion- and Heat-Resistant, Seamless Tubing, 52.5Ni - 19Cr - 3.0Mo - 5.1Cb (Nb) 0.90Ti - 0.50Al - 18Fe (Inconel 718), Consumable Electrode Remelted or Vacuum Induction Melted, 1775 °F (968 °C) Solution Heat Treated