ASTM International - ASTM A877/A877M-99
Standard Specification for Steel Wire, Chromium-Silicon Alloy Valve Spring Quality
|Publication Date:||10 March 1999|
|ICS Code (Spring steels):||77.140.25|
1.1 This specification covers the highest quality of round chromium-silicon alloy steel valve spring wire, uniform in quality and temper, intended for the manufacture of valve springs and other springs requiring high-fatigue properties when used at moderately elevated temperatures. This wire shall be either in the annealed and cold-drawn or oil-tempered condition as specified by purchaser.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the inch-pound units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independent of the other.