钟表游丝是恒弹性合金的典型用途之一。世界上最初的恒弹性合金Elinvar就是为了满足钟表制造业的要求而研制出来的,于1920年成为商品(法国Imphy公司),1932年以后Elinvar合金普遍取代碳钢制造游丝,从而可以用单金属取代双金属制作摆轮,简化了结构、工艺,降低了成本。并使钟表走时温度系数由11秒/日·度提高到1秒/ Timepiece hairspring is one of the typical uses of constant-elasticity alloys. Elinvar, the world’s first constant-elasticity alloy, was developed to meet the needs of the watchmaking industry and became a commodity in 1920 (Imphy, France). After 1932, Elinvar alloys generally replaced the hairspring with carbon steel to replace single-metal Bimetal balance wheel, simplifying the structure, process, reduce costs. And to make the clock temperature coefficient from 11 seconds / day degree to 1 second /