Designation: A 08 General Requirements for Wire Rods and Coarse Round Wire, Carbon Steel1 This standard is issued under the fixed designation A ; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense.
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A number in parentheses indicates the year of last reapproval. This standard has been approved for use by agencies of the Department of Defense.
The values stated ineach system may not be exact equivalents; therefore, eachsystem shall be used independently of the other. Combiningvalues from the two systems may result in non-conformancewith the standard. Referenced Documents2. By varying the amount of cold reduction and otherwire mill practices, including thermal treatment, a wide diver-sity of mechanical properties and finishes are made available.
Since the many gauge systems in use may causeconfusion, the purchaser is encouraged to specify wire diam-eters in inches, decimal parts, or metric equivalents. Current edition approved April 1, Published April Originallyapproved in Last previous edition approved in as A — The straightening operation may also induce changesin the diameter of the wire.
The extent of the changes in theproperties of the wire after cold straightening depends upon thekind of wire and also on the normal variations in the adjust-ments of the straightening equipment. It is therefore notpossible to forecast the properties of straightened and cut wireand each kind of wire needs individual consideration. In mostcases, the end use of straightened and cut wire is not seriouslyinfluenced by these changes.
Rods are not comparable to hot-rolled bars in accuracyof cross section or surface finish and as a semifinished productare intended primarily for the manufacture of wire. Ordering Information4. Guide A ,4. Gauge No. In 20 gauge and coarser, sizes originallyquoted to 4 decimal equivalent places have been rounded to 3 decimal places inaccordance with rounding procedures of Practice E All rounded U. For metric, a typical ordering description is as follows: 15 kguncoated carbon or alloy steel wire 3.
The steel may be either ingot cast orstrand cast. Chemical Composition6. Chemical compositions are specified by rangesor limits for carbon and other elements. The grades commonlyspecified for carbon and alloy steel wire rods and coarse roundwire are designated in Guide A Ifchemistry ranges are also specified, due consideration shouldbe taken to ensure that the producer can achieve the requiredstrengths within the allowable carbon range.
In such cases, the boron content shall be reported ineither a material test report or certification. The analy-sis shall be made from a test sample, preferably taken duringthe pouring of the cast or heat. The chemical composition thusdetermined shall be reported, if required, to the purchaser, orhis representative. Reporting of significant figures and round-ing shall be in accordance with Test Methods, Practices, andTerminology A The analysis is notused for a duplicate analysis to confirm a previous result.
Thepurpose of the product analysis is to verify that the chemicalcomposition is within specified limits for each element, includ-ing applicable permissible variations in product analysis. Theresults of analyses taken from different pieces of a heat maydiffer within permissible limits from each other and from theheat or cast analysis.
Table 3 shows the permissible variationsfor product analysis of carbon steel. Table 4 shows thepermissible variations for product analysis of alloy steel. Theresults of the product analysis obtained, except lead, shall notvary both above and below the permissible limits. For rods and wire, chips are taken by milling or machining thefull cross section of the sample. Sulfur to 0. Silicon 0. Copper bearing steels typically specify 0.
BProduct analysis permissible variations for lead apply only when the amount oflead is specified or required. Arange from 0. Metallurgical Structure7. Mechanical Requirements8.
Nejar Welding has been successfully welded using most all the common practices including gas, resistance, oxyacetylene, and submerged melt welding. This list is incomplete ; you can help by expanding adtm. Distributors will offer small quantity buys while mills will generally only sell large quantities, with delivery times astn from 10 to 50 weeks depending on size and form required This material is stocked primarily in Bar Products by distributors but is also available to a lesser extent in Tubular Products, Axtm Rolled Products, Wire Products, Forging Products, Structurals, and Fasteners. Cold Working Cold working will have a significant affect on hardness and mechanical properties. Referenced Documents purchase separately The documents listed below are referenced within the subject asym but are not provided as part of the standard. Standard Specification for Steel Screw Spikes.