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ASTM A818-06(R2021) pdf free download

ASTM A818-06(R2021) pdf free download.Standard Specification for Coppered Carbon Steel Wire ”
1. Scope
1.1 This specification covers coppered carbon steel wire supplied in coils for general use. It may be produced hard drawn, annealed in process, or annealed at finish size. The coating is very thin and is not designed for protection against corrosion. 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are provided for information only. 1.3 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
3. Terminology
3.1 Definitions ofTerms Specific to This Standard: 3.1.1 annealed coppered wire—wire that may be either 3.1.2 annealed-in-process wire—at some stage before appli- cation of the copper, the steel wire is thermally treated and subsequently coated with copper and redrawn. coated with copper, drawn, and annealed at finish size, or drawn, annealed at finish size and then coppered. 3.1.3 carbon steel—steel that has no minimum content specified or required for aluminum, chromium, cobalt, columbium, molybdenum, nickel, titanium, tungsten, vanadium, or zirconium or any other element added to obtain a desired alloying effect; steel that has the specified minimum copper content that does not exceed 0.40 %; or the maximum content for any of the following elements that does not exceed these percentages: manganese 1.65, silicon 0.60, or copper 0.60. 3.1.4 coppered steel wire—produced by cold drawing rod or wire that has been immersed in a copper sulfate solution. 3.1.5 hard drawn wire—wire that is coppered and drawn without the use of thermal treatment.
8. Coating Requirements
8.1 Due to the nature of the process, the thickness of the copper coating is extremely thin. Therefore, there is no requirement for thickness ofcoating; the requirement is that the coating be continuous. 8.2 The coppered wire as represented by the test specimens shall be capable of being wrapped in a close helix at a rate not exceeding 15 turns/min around a cylindrical steel mandrel having a diameter equal to the diameter of the coated wire without cracking or flaking the copper coating to such an extent that any copper can be removed by rubbing with the bare fingers. Loosening or detachment during the adhesion test of superficial, small particles of copper formed by mechanical polishing of the surface of the coppered wire shall not be considered cause for rejection.
9. Workmanship
9.1 The coppered wire shall be free of slivers, scale, and other imperfections that would be detrimental to intended use. The copper coating shall be continuous and reasonably smooth. To ensure large continuous length coils, welds may be present in the finished wire.
10. Number of Tests and Retests
10.1 A lot shall consist ofall ofthe coils ofwire ofthe same size, type and class, and shall be offered for inspection at one time. A wire sample of sufficient length, approximately 4 ft. (1.2 m), shall be cut from either end of each coil selected for tests described in Sections 6, 8 and 9. 10.2 The number of test specimens taken from the ends of coils during production to assure compliance with Sections 6 and 7 varies with the quality control procedures and the manufacturing facilities of each manufacturer, but is generally not less than 10 % of the coils produced. For the purpose of final product testing, one specimen from every ten coils or fraction thereof in a lot shall be selected at random, or a total of seven specimens, whichever is less. 10.3 Should one or more of the wire specimens fail any requirement, the lot shall be subjected to retest. For retest purposes the original lot shall be regrouped into 50 coil lots or fractions thereof. Each lot shall be tested for the property in which the original sample failed to comply at a frequency of 10 % or more so that the total number oftests is at least double the original. Any lot that exhibits a failure shall be rejected. If during retesting an additional quality parameter is observed to be defective, the lot of 50 is subject to rejection for that cause. The manufacturer may test each coil in the failed lot for the property in which failure occurred and reject only the noncon- forming coils.

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