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This specification covers the highest quality of round chromium-silicon alloy steel valve spring wires, 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. The steel may be made by any commercially accepted steel making process, shall be continuously cast, and shall be free from detrimental pipe and undue segregation and surface imperfections. Heat analysis, tensile testing, wrap testing, and surface inspection by magnetic or eddy current defect analysis shall be done. Both heat and product analysis shall conform to the chemical composition requirements specified for carbon, manganese, phosphorus, sulfur, silicon, and chromium. The mechanical requirements for the steel wire including cooling, heat treatment, and tensile strength, and the metallurgical requirements including etched surface testing, decarburization, and inclusion content are detailed.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This specification covers the highest quality of round and shaped chromium-silicon and chromium-silicon-vanadium alloys of 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. It is similar to the grade VD (referenced in EN 10270-2) intended for high fatigue levels. This wire shall be either in the annealed and cold-drawn or quenched and 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. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A700 Practices for Packaging, Marking, and Loading Methods for Steel Products for Shipment
A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
ICS Number Code 77.140.25 (Spring steels)
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ASTM A877 / A877M-16, Standard Specification for Steel Wire, Chromium-Silicon Alloys, Chrome-Silicon-Vanadium Alloy Valve Spring Quality, ASTM International, West Conshohocken, PA, 2016, www.astm.orgBack to Top