BASE METAL ALLOY AND ITS USE

摘要

PROBLEM TO BE SOLVED: To provide an alloy having a thermal expansion coefficient substantially equal to that of a recently developed ceramics material and free from problems caused by the difference in the thermal expansion coefficient from such ceramics in the case of being used as a cast material for a dental frame or the like. SOLUTION: This cobalt-chromium and/or nickel-chromium base metal alloy contains 30 to 70% nickel and/or cobalt, 20 to 35% chromium and 3 to 25%, particularly, 12 to 15% manganese and/or iron.