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ASTM A878/A878M-05(2011)

Historical Reaffirmation

Standard Specification for Steel Wire, Modified Chromium Vanadium Valve Spring Quality

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1.1 This specification covers the highest quality of round modified chromium vanadium 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.


This specification covers the highest quality of round modified chromium vanadium 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 either be in the annealed and cold-drawn or oil-tempered condition. The steel shall be subjected to continuous casting and be free from detrimental pipe and undue segregation. Heat and product analysis shall conform to the chemical requirements for carbon, manganese, phosphorus, sulfur, silicon, chromium, and vanadium. Mechanical properties shall be determined by the following: annealing and cold-drawing, oil tempering, wrap testing, and special surface inspection. In the oil-tempered condition, steel shall conform to the tensile requirements for different wire diameters. Metallurgical characterization shall include surface condition, decarburization, and inclusion content. The wire or wire rod shall conform to the maximum inclusion content requirements for the surface and core zones.


SDO ASTM: ASTM International
Document Number A878
Publication Date Nov. 1, 2011
Language en - English
Page Count 4
Revision Level 05(2011)
Supercedes
Committee A01.03
Publish Date Document Id Type View
Sept. 1, 2019 A0878_A0878M-19 Revision
Sept. 1, 2017 A0878_A0878M-17 Revision
March 1, 2005 A0878_A0878M-05 Revision
March 10, 1999 A0878_A0878M-99 Revision
Aug. 15, 2024 A0878_A0878M-19R24 Reaffirmation
Nov. 1, 2011 A0878_A0878M-05R11 Reaffirmation