A test program was undertaken to determine the relative resistance to wear and galling of a variety of wrought and cast nickel-base alloys. Testing was done using a breakdown technique with a sliding velocity of 512 ft per min. at the contact surfaces. The results showed that none of the wrought alloys tested were outstanding in their behavior when self-mated. However, mating with dissimilar alloys containing hard phases or soft phases possessing lubricating qualities effected substantial improvements in many instances. The use of chromium, molybdenum disulfide or sulfurized protective coatings was found to be feasible for inhibiting galling as long as their limitations were understood.Presented at the Annual Meeting of the American Society of Lubrication Engineers held in Detroit, Mich., April, 1957.