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A679a679m-06(2012) Standard Specification For Steel Wire, High Tensile Strength, Cold Drawn

Descripción: A679A679M-06(2012) Standard Specification for Steel Wire, High Tensile Strength, Cold Drawn




Designation: A679/A679M − 06 (Reapproved 2012) Standard Specification for Steel Wire, High Tensile Strength, Cold Drawn 1 This standard is issued under the fixed designation A679/A679M; 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. 2.3   Federal Standard:5 Fed. Std. No. 123 Marking 123  Marking for Shipment (Civil Agencies) 2.4   AIAG Standard: 6 AIAGB-5 02.00 AIAGB-5  02.00 Primary Metals Identification Tag Application Standa Standard rd 1. Sco Scope* pe* 1.1 This specification specification covers round, uncoated, uncoated, high tensile strength, cold-drawn steel spring wire, having properties and quality suitable suitable for the manuf manufacture acture of mechan mechanical ical springs and wire forms subject to high static stresses or infrequent dynamic load, or both. 3. Terminology 1.2 The values stated in either SI units or inch-pound inch-pound units are to be regarded separately as standard. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. 3.1   Definitions— For For   defin definiti ition onss of te term rmss us used ed in th this is specification, refer to Terminology A941 Terminology  A941.. 4. Orde Ordering ring Informatio Information n 4.1 It shall be the responsibility responsibility of the purchaser purchaser to specify all req requir uireme ements nts tha thatt are nec necess essary ary for material material und under er thi thiss specifi spe cificati cation. on. Suc Such h req requir uireme ements nts may inc includ lude, e, but are not limited to, the following: 4.1.1 Quant Quantity ity (mass), 4.1.2 4.1 .2 Nam Namee of mat materia eriall (st (steel eel wir wire, e, hig high h ten tensile sile strength, strength, hard drawn), 4.1.3 Dimens Dimensions ions (Table (Table 1 and 1  and Section 9), 4.1.4 Packag Packaging ing (Section (Section  15  15)), 4.1.5 Heat analysis report, report, if requested (6.2 (6.2), ), 4.1.6 Certific Certification ation or test report, or both, if specified (Section 14 14)), and 4.1.7 ASTM designation designation and year of issue. 2. Referenc Referenced ed Documents Documents 2.1   ASTM Standards: 2 A370   Test Methods and Definitions for Mechanical Testing A370 of Steel Products A510 Specification A510  Specification for General Requirements for Wire Rods and Coarse Round Wire, Carbon Steel A510M   Spec A510M Specific ificatio ation n for Gen Genera erall Req Requir uireme ements nts for Wi Wire re Rodss and Coar Rod Coarse se Rou Round nd Wire, Car Carbon bon Ste Steel el (Me (Metric tric)) (Withdrawn 2011) 3 A700 Guide A700  Guide for Packaging, Marking, and Loading Methods for Steel Products for Shipment A751 Test A751  Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products A941 Terminology A941  Terminology Relating to Steel, Stainless Steel, Related Alloys,, and Ferro Alloys Ferroalloys alloys E29 Pra Practic cticee for Usi Using ng Sig Signifi nifican cantt Dig Digits its in Test Dat Dataa to Determine Conformance with Specifications 2.2   ANSI Standard: 4 B32.4 Preferr B32.4  Preferred ed Metric Sizes for Round, Square, Rectang Rectangle, le, and Hexagon Metal Products NOTE   1—A typical typical ord orderi ering ng des descri cripti ption on is as fol follow lows: s: 20 Mg hig high h tensilee str tensil streng ength, th, har hard-d d-draw rawn n ste steel el mec mechan hanical ical spr spring ing wir wire, e, 5.0 5.00-m 0-mm m diamet dia meter er,, 500 500-kg -kg coi coils ls to AST ASTM M A67 A679/A 9/A679 679M M dat dated ed ___ ____ _ , or for inch-pound units, 40 000-lb high tensile strength, hard-drawn steel mechanic cha nical al spr spring ing wir wire, e, 0.1 0.19292-in. in. dia diamet meter er,, in 100 1000-l 0-lb b coi coils ls to AST ASTM M A679/A679M dated ____ . 5. Mate Material rialss and Manufacture Manufacture 5.1 The steel may be made by any com commer mercial cially ly accepted accepted steel making process. The steel may be either ingot cast or continuous strand cast. The rod to be used in the manufacture of wire furnished to this specification shall be in accordance with Specifications A510 Specifications  A510 or or A510M  A510M.. 1 This specification is under the jurisdiction of ASTM Committee  A01  A01 on  on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.03 on A01.03  on Steel Rod and Wire. Current Curre nt editi edition on appro approved ved March 1, 2012. Published Published March 2012. Originally approved in 1973. Last previous edition approved in 2006 as A679/A679M – 06. DOI: 10.1520/A0679_A0679M-06R12. 2 For referenced ASTM standards, visit the ASTM website,, or contact ASTM Customer Service at [email protected] For  Annual Book of ASTM  Standards volume information, refer to the standard’s Document Summary page on the ASTM website. 3 The last app approve roved d vers version ion of this historica historicall sta standa ndard rd is ref refere erence nced d on 4 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036. 5.2 The finished finished wir wiree sha shall ll be fre freee fro from m det detrim rimenta entall pip pipee and undue segregation. 5 Availab vailable le from Stand Standardiza ardization tion Docum Documents ents Order Desk, DODSSP, Bldg. 4, Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098. 6 Available from Automotive Industry Action Group (AIAG), 26200 Lahser Rd., Suite 200, Southfield, MI 48034. *A Summary of Changes section appears at the end of this standard Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States 1 A679/A679M − 06 (2012) TABLE 1 Tensile Requirements Diameter, mmA B  , 0.50 0.55 0.60 0.65 0.70 0.80 0.90 1.00 1.10 1.20 1.40 1.60 1.80 2.00 2.20 2.50 2.80 3.00 3.50 4.00 4.50 5.00 A B  SI Units Tensile Strength, MPa mi n max 24 0 0 23 8 0 23 5 0 23 2 0 23 0 0 22 5 0 22 0 0 21 5 0 21 2 0 21 0 0 20 5 0 20 0 0 19 8 0 19 5 0 19 0 0 18 5 0 18 2 0 18 0 0 17 5 0 17 0 0 16 8 0 16 5 0 26 5 0 26 2 0 26 0 0 25 8 0 25 5 0 25 0 0 24 5 0 24 0 0 23 8 0 23 5 0 23 0 0 22 5 0 22 2 0 22 0 0 21 5 0 21 0 0 20 5 0 20 0 0 19 5 0 19 0 0 18 8 0 18 5 0 6.4 For ref refere ereee pur purpos poses, es, Test Met Method hods, s, Pra Practic ctices, es, and Terminology  A751  A751 shall  shall be used. Inch-Pound Units Tensile Strength, ksi Diameter, in. mi n max 0. 02 0 0. 02 3 0. 02 6 0. 02 9 0. 03 2 0. 03 5 0. 04 1 0. 04 8 0. 05 4 0. 06 2 0. 07 2 0. 08 0 0. 09 2 0. 10 6 0. 12 0 0. 13 5 0. 14 8 0. 16 2 0. 17 7 0. 19 27 0. 20 7 35 0 34 3 33 7 33 1 32 7 32 2 31 4 30 6 30 0 29 3 28 7 28 2 27 5 26 8 26 3 25 8 25 3 24 9 24 5 241 23 8 7. Mechanical Propertie Propertiess 7.1   Tension Test: 7.1.1   Requirements— The The material as represented by tension test specimens shall confo conform rm to the requirements requirements presc prescribed ribed in Table 1. 1. 7.1.2  Number of Tests— One One test specimen shall be taken for each 10 coils or fraction thereof, in a lot. Each heat in a given lot shall be tested. Test Method Method—  — The 7.1.3   Test T he te tens nsio ion n te test st sh shal alll be ma made de in accordance with Test Methods and Definitions  A370  A370.. 38 7 38 0 37 3 36 6 36 1 35 6 34 7 33 9 33 1 32 4 31 7 31 2 30 4 29 6 29 0 28 5 27 9 27 5 27 0 26 7 26 4 7.2   Wrap Test: 7.2.1   Requirements— The T he ma mater teria iall as re repr pres esen ente ted d by th thee wrap test specimens shall conform to the requirements specified in Table in  Table 3. 3. 7.2.2  Number of Tests— One One test specimen shall be taken for each 10 coils, or fraction thereof, in a lot. Each heat in a given lot shall be tested. 7.2.3   Location of Test— Test Test specimens shall be taken from either end of the coil. 7.2.4   Test Method— The The wrap test shall be made in accordance with Test Methods and Definitions  A370  A370.. Tensile strength values for intermediate diameters shall be interpolated. Preferred sizes. For a complete list, refer to ANSI B32.4 8. Metallurgi Metallurgical cal Requirements Requirements 5.3 The wire shall be col cold d dra drawn wn to pro produc ducee the desired desired mechanical properties. 8.1   Microstructure— The T he wire shall be cold drawn with a fine pearlite structure. 5.4 The wire finish shall be suitable for forming forming or coiling. It is not intended that this material be furnished with a metallic coating. 8.2   Surface Conditions— The The wire surface shall not exhibit imperfections that exceed 3.5 % of the wire diameter or 0.25 mm (0.010 in.) in depth, whichever is smaller. 6. Chem Chemical ical Compositi Composition on 9. Dimensions and Permissible Variations Variations 6.1 The steel shall conform conform to the requirements requirements for chemical composition compo sition prescr prescribed ibed in in Table  Table 2. 2. 9.1 The permissib permissible le var variati iations ons in the diameter diameter of the wire shall be as specified in Table in  Table 4. 4. 6.2   Heat Analysis— Each Each heat of steel shall be analyzed by the man manufa ufactu cturer rer to dete determi rmine ne the per percen centag tagee of elem element entss prescribed prescr ibed in in Table  Table 2. 2. This analysis shall be made from a test specime spe cimen n pre prefer ferably ably taken dur during ing the pou pourin ring g of the hea heat. t. When requested, in the purchase order, the heat analysis shall be reported to the purchaser. 10. Wo Workmanship, rkmanship, Finish, and Appearance Appearance 10.1   Workmanship— The T he wire shall not be kinked or improperly cast. To test for cast, one convolution of wire shall be cut from the coil and placed on a flat surface. The wire shall not spring up excessively nor show a wavy condition. 10.1.1 10. 1.1 Each coil sha shall ll be one continuou continuouss len length gth of wir wire, e, proper pro perly ly coi coiled led and firm firmly ly tied tied.. Welds made pri prior or to col cold d drawing are permitted. 6.3   Product A n analys analysis is ma may y be ma made de by the Product Analys Analysis—  is— An purchaser from finished wire representing each heat of steel. The che chemica micall com compos positio ition n thu thuss det determ ermine ined, d, as to elem element entss required requir ed or restric restricted, ted, shall confo conform rm to the product analysis requirements specified in Table 7 of Specifications   A510 or A510M.. A510M TABLE 3 Wrap Test Requirements A SI Units Diameter, mm Mandrel Size TABLE 2 Chemical Requirements E l e m e nt Carbon M a n ga ne s e Phosphorus, max Sulfur, max Si l i c o n A B  Over 0.50 to 3.00, incl Over 3.00 to 5.00, incl Composition, % 0.65–1.00A 0.20–1.30B  0. 04 0 0 .0 5 0 0 .1 5 – 0 .3 5 2× 4× Inch-Pound Units Carbon in any one lot shall not vary more than 0.13 %. Manganese in any one lot shall not vary more than 0.30 %. A 2 Diameter, in. Mandrel Size 0.020 to 0.162, incl Over 0.162 to 0.207, incl 2× 4× The symbol “X” represents the diameter of the wire tested. A679/A679M − 06 (2012) TABLE 4 Permissible Variations in Wire DiameterA 13. Reje Rejectio ction n and Rehe Rehearin aring g SI Units Diameter, mm To 0.70, incl 0 .7 0 t o 2 .0 0 , i nc l Over 2.00 Permissible Variations, ±mm 0 .0 2 0 .0 3 0 .0 5 13.1 Unless otherwise specified, any rejection based on tests made in accord accordance ance with these specifications specifications shall be reported to the manufacturer as soon as possible so that an investigation may be initiated. Permissible Out-of-Round, ±mm 0. 02 0. 03 0. 05 13.2 The material 13.2 material sha shall ll be ade adequa quately tely protected protected and cor cor-rectly identified in order that the manufacturer is able to make a prop proper er inves investigation tigation.. Inch-Pound Units Diameter, in. 0 .0 2 0 to 0 . 0 2 8, i n c l Over 0.028 to 0.075, incl Over 0.075 to 0.207, incl Permissible Variations, ±in. Permissible Out-of-Round, ±in. 0. 00 0 8 0 .0 0 1 0 .0 0 2 0 .0 0 0 8 0 .0 0 1 0 .0 0 2 14. Certificatio Certification n 14.1 Whe 14.1 When n spe specifi cified ed in the purchase purchase order or con contra tract, ct, a producer’s or supplier’s certification shall be furnished to the purchaser that the material was manufactured, sampled, tested, and ins inspec pected ted in acco accorda rdance nce wit with h thi thiss spe specific cificatio ation n and has been found to meet the requirements. When specified in the purchase order or contract, a report of the test results shall be furnished. A For purposes of determining conformance with this specification, all specified limits are absolute as defined in Practice E29 Practice E29.. 14.2 The cer 14.2 certifi tificati cation on sha shall ll inc includ ludee the spe specifi cificat cation ion number, year of issue, and revision letter, if any. 10.2   Appearance— The The surface shall be smooth and free of  rust with no imperfections such as pits or die marks that tend to impair the use of the wire for springs. Any other surface requirements shall be negotiated at the time of entry of the order. 15. Mar Marking king for Shipment Shipment 15.1 The coil mass, dimensions, dimensions, and the method of packaging in g sh shall all be ag agre reed ed up upon on be betw twee een n th thee man manuf ufact actur urer er an and d purchaser. 11.. Rete 11 Retests sts 15.2 A tag shall be sec 15.2 secure urely ly attached attached to eac each h coi coill of wire with identifying information as agreed upon by the purchaser and manufacturer. 11.1 If any test specime 11.1 specimen n exhibits obvious obvious imperfections imperfections or shows the presence of a weld, it may be discarded and another specimen substituted. 15.3 15. 3 Unl Unless ess oth otherw erwise ise spe specifi cified ed in the pur purcha chaser ser’s ’s ord order er,, packaging packag ing,, mar markin king, g, and loa loadin ding g for shi shipme pments nts sha shall ll be in accordance with those procedures recommended by Practices A700.. A700 12. Inspe Inspectio ction n 12.1 Unless otherwise otherwise specified in the contr contract act or purch purchase ase order, the manufacturer is responsible for the performance of  all inspection and test requirements specified in this specification. Except as otherwise specified in the contract or purchase order, the manufacturer may use his own or any other suitable facil fa ciliti ities es fo forr th thee pe perf rfor orma manc ncee of th thee in insp spec ectio tion n an and d tes testt requirements unless disapproved by the purchaser at the time thee or th orde derr is pl place aced. d. Th Thee pu purc rcha hase serr sh shall all ha have ve th thee ri righ ghtt to perf pe rfor orm m an any y of th thee in insp spect ectio ions ns an and d tes tests ts se sett fo fort rth h in th this is specific spe cificatio ation n whe when n suc such h ins inspec pectio tions ns and test testss are dee deemed med necessary to assure that the material conforms to prescribed requirements. 15.4 15. 4 Mar Markin king g for shipment shipment of mate materia riall for civ civil il age agencie nciess shall be in accordance with Fed. Std. No. 123. 15.5   Bar Coding— In In addition to the previously-stated identification requirements, bar coding is acceptable as a supplementary identification method. Bar coding should be consistent with AIAG Standard 02.00. The bar code may be applied to a substantially affixed tag. 16. Keyw Keywords ords 16.1 hard drawn; drawn; high tensile; wire 3 A679/A679M − 06 (2012) SUMMARY OF CHANGES Comm Co mmitt ittee ee A0 A01 1 ha hass id iden entifi tified ed th thee lo locat catio ion n of se selec lected ted ch chan ange gess to th this is st stan anda dard rd si sinc ncee th thee las lastt iss issue ue,, A679/A679M – 00, that may impact the use of this standard. (Approved May 1, 2006.) 2.4, 4, re remo move ved d th thee re refe fere renc nced ed do docu cume ment nt re refe ferr rrin ing g to (1) In 2. MIL-ST MIL -STD-1 D-163. 63. Thi Thiss stan standar dard d is obs obsole olete te and all ref refere erence ncess were removed.  15.4,,  removed the first sentence referring to MIL-STD(2)  In  15.4 163.  In 6.3  6.3,, change the table reference from Table 10 to Table 7. (3)  In (4)  Added summary of changes section. 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