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This specification covers hot-wrought steel bars for the manufacture of general purpose springs such as coil, torsion, and leaf. The steel shall be melt processed by using open-hearth, basic-oxygen, or electric furnace. The materials shall undergo heat analysis and shall conform to the required chemical compositions and hardenability. The steel specimens shall conform to the required values of rounded corner radii and cross section tolerances for round-edge flat bars.
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 hot-wrought steel bars to be used for the manufacture of general-purpose springs such as coil, torsion, and leaf.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered 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.
A29/A29M Specification for General Requirements for Steel Bars, Carbon and Alloy, Hot-Wrought
A255 Test Methods for Determining Hardenability of Steel
A304 Specification for Carbon and Alloy Steel Bars Subject to End-Quench Hardenability Requirements
A322 Specification for Steel Bars, Alloy, Standard Grades
A576 Specification for Steel Bars, Carbon, Hot-Wrought, Special Quality
E112 Test Methods for Determining Average Grain Size
ICS Number Code 77.140.25 (Spring steels)
UNSPSC Code 30263600(Carbon steel bars); 30263700(Steel alloy bars)
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ASTM A689-97(2018), Standard Specification for Carbon and Alloy Steel Bars for Springs, ASTM International, West Conshohocken, PA, 2018, www.astm.orgBack to Top