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1.1 This specification covers round, cold-drawn, steel spring wire having properties and quality intended for the manufacture of the following types of upholstery springs:
1.1.1 Type A—Coiled (Marshall pack),
1.1.2 Type B—Coiled and knotted,
1.1.3 Type C—Coiled and knotted (offset style),
1.1.4 Type D—Coiled and hooked (single and cross helicals),
1.1.5 Type E—Coiled and hooked (short tension-regular tensile strength),
1.1.6 Type F—Coiled and hooked (short tension-high tensile strength),
1.1.7 Type G—Regular lacing, and
1.1.8 Type H—Automatic lacing.
1.2 These types of upholstery springs are used in the manufacture of bed spring units, mattresses, furniture cushions, and automobile seats. This wire is not intended for the manufacture of mechanical springs.
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
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
AIAG StandardAIAGB-502.00 Primary Metals Identification Tag Application Standard Available from Automotive Industry Action Group (AIAG), 26200 Lahser Rd., Suite 200, Southfield, MI 48033-7100, www.aiag.org.
UNSPSC Code 31152200(Non electric iron and steel wire)