ALLOY FOR MANUFACTURE OF FRAME OF SPECTACLES, PERSONAL ORNAMENT AND OTHER METALLIC MEMBERS, PERSONAL ORNAMENTS, FRAME OF SPECTACLES AND ITS MEMBERS, AND INTERMEDIATE PRODUCT AND RAW MATERIAL FOR PRODUCTS OF THESE KINDS

摘要

PROBLEM TO BE SOLVED: To obtain an alloy excellent in cold formability and elasticity characteristic, capable of being inexpensively manufactured and easily pasttreated, and having superior thermal stability by specifying a composition consisting of Zn, Mn, Fe, Al, and Cu. ;SOLUTION: This alloy has a composition consisting of, by weight, 13.0-16.0% Zn, 9.0-11.0% Mn, 1.0-2.0% Fe, 4.0-6.5% Al, and the balance Cu. This alloy is a material having no possibility of causing metal allergy when used for the frame of spectacles, personal ornaments, and other metallic members to be in contact with the body and having sufficient strength and superior workability. Further, this alloy is free from Ni at welding, etc., and has thermal stability equal to or higher than that of a monel alloy.;COPYRIGHT: (C)1998,JPO