Patent ID: 6221183
Filing Date: 2001-04-24
Classification: C22C

Abstract:
An alloy wire of high strength and low thermal expansion, wherein:the wire is made of an alloy which has a chemical composition of, by weight, 0.06% to 0.50% C, 65% or less Co, and less than 30% Ni in total amount of 25% to 65% of Co+Ni, and the balance being Fe as a main component, other optional elements and unavoidable impurities, and which has a primary phase of austenite phase and martensite phase induced by working, and wherein the wire has 150 kgf/mm.sup.2 or more of tensile strength at normal temperature and an average thermal expansion coefficient of 6.times.10.sup.-6 /.degree. C. or less at from normal temperature to 230.degree. C.