This specification covers round chromium-vanadium alloy steel spring wires having properties and quality intended for the manufacture of springs used at moderately elevated temperatures. Wires shall either be in the annealed and cold-drawn or oil-tempered condition as specified by the purchaser. The steel may either be ingot cast or strand cast, and the finished wire shall be free from detrimental pipe and undue segregation. Specimens shall undergo cast or heat analysis, and shall conform to required chemical compositions for carbon, manganese, phosphorus, sulfur, silicon, chromium, and vanadium. Wrap tests shall also be performed wherein mechanical properties shall be assessed for tensile strength requirements. Metallurgical properties, such as the surface condition and decarburization, shall be inspected as well. For all test procedures, one specimen shall be taken for each ten coils, or fraction thereof, in a lot. Each cast or heat in a given lot shall be tested.
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1.1 This specification covers round and shaped chromium-vanadium alloy steel spring wire having properties and quality intended for the manufacture of springs used at moderately elevated temperatures. 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.
1.2.1 Within the text, the inch-pound units are shown in brackets.
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
A752 Specification for General Requirements for Wire Rods and Coarse Round Wire, Alloy Steel
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
alloy; chromium-vanadium; spring; wire; Elevated temperature service applications--steel; Steel springs--specifications; Steel wire (chromium alloy)--specifications;
ICS Number Code 77.140.25 (Spring steels)
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Citing ASTM Standards
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