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ASTM A230/A230M-05
- Standard Specification for Steel Wire, Oil-Tempered Carbon Valve Spring Quality
- standard by ASTM International, 03/01/2005
- Publisher: ASTM
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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.