An Update on Technical Development and Implementation of ATI 718Plus Alloy

ATI 718Plus^® alloy is a cast and wrought Ni-base superalloy developed in the early 2000’s to bridge the gap in temperature capability between alloys 718 and Waspaloy.  At the Superalloys 718, 625, 706 and Derivatives 2005 conference, ATI presented several papers on the development and performance of the alloy in multiple product forms.  Since that time, ATI 718Plus alloy has been fully commercialized and is being inserted into gas turbine engines.  Furthermore, the manufacturing characteristics and the mechanical properties have been more thoroughly characterized.  This presentation will review the progress to date in characterizing the mechanical properties and performance of ATI 718Plus alloy as well as discuss applications and new product forms currently under development.