SAE J 121:1997被替代
Decarburization In Hardened And Tempered Unified Threaded Fasteners
出版：SAE International
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基本信息
标准编号： SAE J 121:1997
发布时间：1997/4/1 0:00:00
标准类别：Standard
出版单位：SAE International
标准页数：5
标准简介
Gives methods for measuring, classifying and specifying decarburization in the threaded section of hardened and tempered steel bolts, studs, screws and similar parts. Not intended to cover products that are specifically carburized to achieve special properties.
