ASTM A 230/A230M : 1999被替代
Standard Specification for Steel Wire, Oil-Tempered Carbon Valve Spring Quality
出版：American Society for Testing and Materials
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基本信息
標準編號： ASTM A 230/A230M : 1999
發布時間：1999/3/10 0:00:00
標準類別：Standard
出版單位：American Society for Testing and Materials
標準頁數：4
標準簡介
1.1 This specification covers the highest quality of round carbon steel spring wire, uniform in quality and temper, intended especially for the manufacture of valve springs and other springs requiring high-fatigue properties. 1.2 The values stated in either SI (metric) units or inch-pound units are to be regarded separately as standard. The values stated in each system are not exact equivalents; therefore, each system must be used independent of the other.
