1. Gas Turbine Engine Project Materials Joint Test Protocol Document Principally Prepared By Jerry Schell GE Aircraft Engines Additional Input From GTE OEMs and DoD Repair Depots

2. Component Alloys Seven alloys selected for technical evaluation IN718, INC901, AM355, A286, 17-4PH, 4340, 9310

3. Coating Compositions to be Investigated in Project HVOF Process Air Plasma Spray ProcessWC/17Co Cr 3 C 2 /(20)NiCrCo/28Mo/8Cr/2Si* Co/28Mo/8Cr/2Si* Co/28Mo/17Cr/3Si** * Tribaloy 400 ** Tribaloy 800

4. Materials JTP Structure FIVE MAJOR TASKS: 1. Spray process optimizations 2. Fatigue 3. Wear and friction Fretting tests, carbon seal tests 4. Corrosion tests 5. Producibility tests - Stripability - Assembly/Disassembly

5. Current Status of Materials JTP Document finalized and being distributed for signatures Acquisition of all raw materials completed and delivered to Metcut Research in Cincinnati PO issued for fabrication of 1300 fatigue coupons; work in progress PO issued to Hitemco on Long Island for coatings optimization work; Jerry Schell coordinating effort on HVOF Tribaloy 800 and Cr 3 C 2 /NiCr, and Plasma Spray WC/Co and Tribaloy 400; first series of tests conducted in August 2001 Overall schedule established for phased execution of sample preparation, coating, and testing