Steel, Corrosion-Resistant, Bars, Wire, Forgings, Mechanical Tubing, Rings, and Stock for Forging, Rings and Heading, 16Cr - 4.0Ni - 0.30Cb - 4.0Cu (17-4 PH®), Solution Heat Treated, Precipitation Hardenable, Premium Aircraft Quality, Consumable Electrode Remelted