Nickel Alloy, Corrosion- And Heat-Resistant, Seamless Tubing, 72Ni - 15.5Cr - 0.95Cb (Nb) - 2.5Ti - 0.70Al - 7.0Fe (X750), Vacuum Melted, Solution Heat Treated, Precipitation Hardenable To 170 Ksi (1172 Mpa) Tensile Strength