L. Flower, L. M. Pike, Haynes International, Inc., Kokomo, IN
Haynes International developed an advanced, wrought gamma-prime strengthened superalloy, HAYNES® 282® alloy, for use in aircraft and land based gas turbines and other high temperature environments. HAYNES® 282® alloy is a unique Ni-19.5Cr-10Co-8.5Mo-1.5Al-2Ti superalloy which combines exceptional high temperature properties with good weldability and fabricability. At high temperatures, even as high as 900°C (1650°F), the new alloy is stronger in creep strength than HAYNES Waspaloy alloy and approaches the creep strength of HAYNES R-41 alloy. Further, the 282 alloy has much improved thermal stability, weldability, and fabricability compared to Waspaloy and R-41 alloys. Several full-scale VIM-ESR heats have been produced to various product forms including forging billet, bar, sheet, plate, and welding wire. Current alloy data and applications will be discussed.
Summary: HAYNES® 282® alloy is a unique Ni-19.5Cr-10Co-8.5Mo-1.5Al-2Ti superalloy which combines exceptional high temperature properties with good weldability and fabricability. At high temperatures, even as high as 900°C (1650°F), the new alloy is stronger in creep strength than HAYNES Waspaloy alloy and approaches the creep strength of HAYNES R-41 alloy.
