AMS 5872 is a specification of Nickel Nimonic 263 nickel-chromium-cobalt-molybdenum alloy. Available as plate, sheet or strip, the AMS 5872 specification offers excellent ductility and excellent fabrication characteristics.
Due to its properties, this alloy is mostly used in high temperature and high strength applications, such as the hot section of gas turbines, both in aircraft and land-based applications.
This specification can be fabricated using hot working in the temperature range of 1742-2102°F (950-1150°C), or cold working for 0.5-1.2 mm thick strips using annealing technique of 3 minutes at 1190°C by fluidized bed quenching.
For bars or heavy section parts annealing via heat treatment that lasts two hours at 2102°F (1150°C) is required.
For sheets, the annealing process lasts 15 minutes at a temperature range of 1922-2012°F (1050-1100°C), followed by rapid cooling. Besides, fluidized bed quenching can be used for sheets.
Nickel Nimonic 263 AMS 5872 can be readily welded using argon shielded processes, both automatic and manual T.I.G. and M.I.G. processes, and also resistance spot, stitch and seam welding, and flash-butt welding for gas turbine rings.
Automatic T.I.G. welding is used for sheets and strips with a thickness of up to 3.25 mm, but only for simple joints.
Manual T.I.G. welding is required for more complicated joints and thicknesses up to 4.8 mm. The M.I.G. welding process is required for thicknesses above 4.8 mm, or when a lot of welding is required.