ASTM A232 / A232M - 18
Standard Specification for Chromium-Vanadium Alloy Steel Valve Spring Quality Wire
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Abstract
This specification covers the highest quality of round chromium-vanadium alloy steel wires for manufacture of valve springs and other springs with high-fatigue properties under moderately elevated temperatures. The wires shall be annealed, cold-drawn, or oil-tempered. The material shall conform to specified carbon, manganese, phosphorus, sulfur, silicon, chromium, and vanadium contents. Guidelines for mechanical testing are given. Values for tensile requirements are provided. Material decarburization shall be examined. Attention is also given to workmanship, finish, and appearance of the product, and as well as its inspection, rejection, rehearing, and certification. Packaging, marking, and loading for shipment is also described.
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. Scope
1.1 This specification covers the highest quality of round and shaped 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. 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 oil-tempered condition as specified by the 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.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A700 Guide for Packaging, Marking, and Loading Methods for Steel Products for Shipment
A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
E8/E8M Test Methods for Tension Testing of Metallic Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E45 Test Methods for Determining the Inclusion Content of Steel
European Standard
EN 10270-2 Steel Wire for Mechanical Springs Part 2: Oil-Hardened and Tempered Spring Steel Wire of Unalloyed and Alloyed SteelsFederal Standard
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)ICS Code
ICS Number Code 77.140.25 (Spring steels)
UNSPSC Code
UNSPSC Code 31152200(Non electric iron and steel wire)
Referencing This Standard
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DOI: 10.1520/A0232_A0232M-18
Citation Format
ASTM A232 / A232M-18, Standard Specification for Chromium-Vanadium Alloy Steel Valve Spring Quality Wire, ASTM International, West Conshohocken, PA, 2018, www.astm.org
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