作废 YB/T 5135-1993
发条用高弹性合金3J9(2Cr19Ni9Mo) 发条用高弹性合金3J9(2Cr19Ni9Mo) High elastic alloy 3J9 for spring
发布日期:
实施日期:
分类信息
标准简介

本标准适用于制造钟表、定时器发条及仪表中其他弹性元件用的高弹性合金3J9(2Cr19Ni9Mo)冷拉丝材和热轧线材

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合金发条弹性Cr19Ni9Mo

最后更新时间 2025-08-29