1、Designation: A641/A641M 09a (Reapproved 2014)Standard Specification forZincCoated (Galvanized) Carbon Steel Wire1This standard is issued under the fixed designation A641/A641M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the ye
2、ar 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 U.S. Department of Defense.1. Scope*1.1 This specification covers
3、 soft, medium, and hard temperzinc-coated (galvanized) carbon steel wire in coils for generaluse.1.2 The supplementary requirements of this specificationcover zinc-coated weights masses for nails, staples, and wirefrom which nails and staples are cut and formed.1.3 This specification is applicable t
4、o orders in eitherinch-pound units (as A641) or SI units (as A641M). Valuesstated in either inch-pound units or SI units are to be regardedseparately as the standard. Within the text, the SI units areshown in brackets. The values stated in the two systems are notexact equivalents; therefore, each sy
5、stem shall be used inde-pendent of the other, without combining values in any way.1.4 This specification and some referenced specificationsare expressed in both inch-pound and SI units. If the orderspecifies the applicable “M” specification designation, theproduct shall be furnished to SI units.1.5
6、The text of this specification references notes andfootnotes which provide explanatory material. These notes andfootnotes (excluding those in tables and figures) shall not beconsidered as requirements of the specification.2. Referenced Documents2.1 ASTM Standards:2A90/A90M Test Method for Weight Mas
7、s of Coating onIron and Steel Articles with Zinc or Zinc-Alloy CoatingsA700 Practices for Packaging, Marking, and Loading Meth-ods for Steel Products for Shipment (Withdrawn 2014)3A902 Terminology Relating to Metallic Coated Steel Prod-uctsB6 Specification for ZincE8 Test Methods for Tension Testing
8、 of Metallic MaterialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications3. Terminology3.1 DefinitionsFor definitions of terms used in thisspecification, refer to Terminology A902.4. Classification4.1 TemperThe wire is classified with regard to mechani-
9、cal properties by temper, which is related to tensile strengthand stiffness. The temper designations are soft, medium, andhard.4.2 Zinc CoatingZinc coating on the wire is classified ina number of classes (Class 1, 2, 3, or A, 4, B, 5, C (see Table1, Table 2, Table 3, and Table S1.1) and as “regular
10、coating.”NOTE 1Class 2 coating has been eliminated since it is no longergenerally specified by users except for nails, staples, and wire from whichnails and staples are cut and formed, as presented in the SupplementaryRequirements.5. Ordering Information5.1 Orders for material under this specificati
11、on shall includethe following information:5.1.1 Quantity (weight mass),5.1.2 Coated wire diameter,5.1.3 Intended use, when the wire is to be used for nails orstaples (see Supplementary Requirement S1),5.1.4 Class of coating (see Table 1, Table 2,orTable 3 (orTable S1.1 when applicable),5.1.5 Temper
12、(soft, medium, or hard) (Table 4 or Table 5),tensile strength-mechanical properties other than specified inTable 4 or Table 5 can be ordered upon agreement between thepurchaser and producer,5.1.6 ASTM designation and year of issue as A641_for inch-pound units, or A641M-_ for SI units.5.1.7 Supplemen
13、tary Requirements (if required).NOTE 2A typical ordering description (inch-pound units) is asfollows: 50 000 lb, 0.120 in., zinc-coated wire, Class 1 coating, soft1This specification is under the jurisdiction of ASTM Committee A05 onMetallic-Coated Iron and Steel Products and is the direct responsib
14、ility ofSubcommittee A05.12 on Wire Specifications.Current edition approved Nov. 1, 2014. Published November 2014. Originallyapproved in 1992. Last previous edition approved in 2009 as A641/A641M - 09a.DOI: 10.1520/A0641_A0641M-09AR14.2For referenced ASTM standards, visit the ASTM website, www.astm.
15、org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.*A Summary of Changes section appears at t
16、he end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1temper in 1500lb coils on tubular carriers to ASTM A641_.NOTE 3A typical ordering description (SI units) is as follows: 50 000kg, 3.00 mm., zinc-coated wire, Class
17、 1 coating, soft temper in 1000kgcoils on tubular carriers to ASTM A641M_.6. Materials and Manufacture6.1 The steel from which the wire is produced shall be madeby any commercially accepted steel making process.6.2 The slab zinc when used shall be any grade of zincconforming to Specification B6.7. M
18、echanical Properties7.1 The zinc-coated wire, as represented by the test speci-mens tested in accordance with Test Methods E8, shallconform to the tensile strength requirements prescribed inTable 4 or Table 5. Tensile strength-mechanical propertiesother than specified in Table 4 or Table 5 can be or
19、dered uponagreement between the purchaser and producer.7.2 Test specimens found to contain a weld or obviousimperfections shall be discarded and another test specimenobtained to verify conformance to the tensile strength require-ments.8. Permissible Variations8.1 The permissible variation in diamete
20、r of the zinc-coatedwire as represented by the test specimens shall meet therequirements shown in Table 6 or Table 7.9. Weight Mass of Coating9.1 The zinc-coated wire, as represented by the test speci-mens tested in accordance with Section 12 and Test MethodA90/A90M, shall conform to the requirement
21、s of Table 1,Table 2,orTable 3 for minimum weight mass of zinc coatingof the class specified. Individual results not more than 10 %below the minimum values specified in Table 1, Table 2,orTable 3 are allowed, if the average of at least two samples fromthe same coil are equal to or greater than the m
22、inimum valuespecified in Table 1, Table 2,orTable 3.9.2 Zinc-coated wire produced as “regular coating” shallhave the full surface covered with zinc, but there is no specifiedminimum weight of coating.10. Adherence of Coating10.1 The zinc-coated wire as represented by the test speci-mens shall be cap
23、able of being wrapped in a close helix at arate not exceeding 15 turns/min around a cylindrical steelmandrel having a diameter as prescribed in Table 8 or Table 9without cracking or flaking the zinc coating to such an extentthat any zinc can be removed by rubbing with the bare fingers.Loosening or d
24、etachment during the adhesion test ofsuperficial, small particles of zinc formed by mechanicalpolishing of the surface of the zinc-coated wire shall not beconsidered cause for rejection.11. Workmanship, Finish, and Appearance11.1 The zinc-coated wire shall be free of slivers, scale, andother imperfe
25、ctions not consistent with good commercialpractice. The coating shall be continuous and reasonablyuniform. To ensure large continuous length coils, welds arepermitted in the finished wire.TABLE 1 Minimum Weight Mass of Zinc per Unit Area of Uncoated Wire Surface (Inch-Pound Units)Wire Diameter in.AC
26、lass 1Class 3 or A Coating,oz/ft2Class 4 Coating,oz/ft2Class B Coating,oz/ft2Class 5 Coating,oz/ft2Class C Coating,oz/ft20.035 0.15 0.45 n/a 0.90 n/a 1.350.041 0.15 0.50 n/a 1.00 n/a 1.500.048 0.15 0.55 n/a 1.10 n/a 1.650.054 0.20 0.60 n/a 1.20 n/a 1.800.062 0.20 0.65 n/a 1.20 n/a 1.800.072 0.20 0.6
27、5 n/a 1.20 n/a 1.800.076 0.25 0.70 1.20 1.40 2.00 2.100.080 0.25 0.70 1.20 1.40 2.00 2.100.092 0.28 0.75 1.20 1.50 2.00 2.250.099 0.28 0.80 1.20 1.60 2.00 2.400.106 0.30 0.80 1.20 1.60 2.00 2.400.120 0.30 0.85 1.20 1.70 2.00 2.550.135 0.30 0.85 1.20 1.70 2.00 2.550.148 0.35 0.90 1.20 1.80 2.00 2.700
28、.162 0.35 0.90 1.20 1.80 2.00 2.700.177 0.44 0.90 1.20 1.80 2.00 2.700.192 0.50 1.00 1.20 2.00 2.00 3.000.207 0.53 1.00 1.20 2.00 2.00 3.00and largerACoating weights mass for diameters other than those shown in Table 1 are the coating weights mass for the next smaller diameter.TABLE 2 Minimum Weight
29、 Mass of Zinc per Unit Area ofUncoated Wire Surface (SI Units)Wire Diameter, mm Class 1 Coating, g/m20.20 to under 0.25 200.25 to under 0.40 250.40 to under 0.50 300.50 to under 0.60 350.60 to under 0.80 400.80 to under 1.10 451.10 to under 1.50 551.50 to under 1.90 651.90 to under 2.30 752.30 to un
30、der 3.20 853.20 to under 4.00 1004.00 to under 4.90 1154.90 to under 5.90 1505.90 and over 190A641/A641M 09a (2014)212. Number of Tests and Retests12.1 The number of test specimens taken from the ends ofcoils during production to ensure compliance with Sections 7,8, 9, and 10 vary with the quality c
31、ontrol procedures and themanufacturing facilities of each manufacturer but is generallynot less than 10 % of the coils produced. For the purpose offinal product testing, one specimen from every ten coils orfraction thereof in a lot shall be selected at random or a total ofseven specimens, whichever
32、is less.12.2 A wire sample of sufficient length, approximately 4 ft1.2 m, shall be cut from either end of each coil selected fortests described in Sections 7, 8, 9, and 10.12.3 If one or more of the wire specimens fail anyrequirement, the lot shall be subjected to retest. For retestpurposes, the ori
33、ginal lot shall be regrouped into 50 coil lots orfractions thereof. Each lot shall be 10 % tested for the propertyin which the original sample failed to comply. The number ofsamples thus selected shall be at least twice the number of theoriginal sampling. Any lot that exhibits a failure shall bereje
34、cted.12.3.1 The manufacturer has the option of testing each coilin the failed lot for the property in which the failure occurred,rejecting the nonconforming coils. The coils which conformTABLE 3 Minimum Weight Mass of Zinc per Unit Area of Uncoated Wire Surface (SI Units)Diameter, mmAClass 3 or A Co
35、ating, g/m2Class 4 Coating, g/m2Class B Coating g/m2Class 5 Coating, g/m2Class C Coating g/m20.90 137 n/a 275 n/a 4121.00 153 n/a 305 n/a 4581.20 168 n/a 336 n/a 5041.40 183 n/a 366 n/a 5491.60 198 n/a 366 n/a 5491.80 198 n/a 366 n/a 5491.90 214 366 427 610 6412.00 214 366 427 610 6412.30 229 366 45
36、8 610 6872.50 244 366 488 610 7322.70 244 366 488 610 7323.00 259 366 519 610 7783.40 259 366 519 610 7783.80 275 366 549 610 8244.10 275 366 549 610 8244.50 275 366 549 610 8244.90 305 366 610 610 9155.30 305 366 610 610 915and largerACoating weights mass for diameters other than those shown in thi
37、s table are the coating weights mass for the next smaller diameter.TABLE 4 Tensile Strength for Temper Designation (Inch-PoundUnits)Wire Diameter, in. Soft, KsiAMedium, KsiAHard, KsiA0.035 to under 0.080 75 max 70 to 100 90 to 1200.080 to under 0.106 75 max 70 to 95 85 to 1150.106 to 0.176A, incl 70
38、 max 65 to 90 80 to 110Over 0.176 70 max 60 to 85 75 to 105AFor the purpose of determining conformance with this specification, and observedvalue shall be rounded to the nearest 1 Ksi in accordance with the roundingmethod of Practice E29.TABLE 5 Tensile Strength for Temper Designation (SI Units)Wire
39、 Diameter, mmMPaSoftAMediumAHardA0.20 to under 2.00 515 max 485 to 690 620 to 8252.00 to under 2.50 515 max 485 to 655 585 to 7952.50 to under 4.70 485 max 450 to 620 550 to 7604.70 and over 485 max 415 to 585 515 to 715AFor the purpose of determining conformance with this specification, an observed
40、value shall be rounded to the nearest 1 MPa in accordance with the roundingmethod of Practice E29.TABLE 6 Diameter Tolerance for Zinc-Coated Wire in Coils (Inch-Pound Units)AWire Diameter, in.ToleranceBPlus and Minus, in.Regular and Class 1CoatingClass 3, 4, 5 or B andC Coating0.035 to under 0.076 0
41、.002 0.0020.076 to under 0.148 0.003 0.0040.148 to 0.250, incl. 0.003 0.004Over 0.250 to 0.500, incl. 0.003 0.005AFor the purpose of determining conformance with this specification, an observedvalue shall be rounded to the nearest 0.001 in. in accordance with the roundingmethod of Practice E29.BIt i
42、s recognized that the surfaces of heavy zinc coating, particularly thoseproduced by hot galvanizing, are not perfectly smooth and devoid of irregularities.The tolerances shown in Table 6 shall not be rigidly applied to such irregularitiesthat are inherent to the product, so that unjustified rejectio
43、ns of wire that areactually satisfactory for use do not occur. Therefore, it is intended that thesetolerances be used in gaging the uniform areas of the zinc-coated wire.TABLE 7 Diameter Tolerance for Zinc-Coated Wire in Coils (SIUnits)AWire Diameter, mmToleranceB, Plus and Minus, mmRegular and Clas
44、s 1CoatingClass 3, 4, 5 or A, B,and C Coating0.20 to under 1.90 0.05 0.051.90 to under 3.70 0.08 0.103.70 to under 5.90 0.08 0.105.90 and over 0.08 0.13AFor the purpose of determining conformance with this specification, an observedvalue shall be rounded to the nearest 0.01 mm in accordance with the
45、 roundingmethod of Practice E29.BIt is recognized that the surfaces of heavy zinc coating, particularly thoseproduced by hot galvanizing, are not perfectly smooth and devoid of irregularities.The tolerances shown in Table 7 shall not be rigidly applied to such irregularitiesthat are inherent to the
46、product, so that unjustified rejections of wire that is actuallysatisfactory for use do not occur. Therefore, it is intended that these tolerances beused in gaging the uniform areas of the zinc-coated wire.A641/A641M 09a (2014)3for the property tested shall be deemed to conform to thespecification r
47、equirements.13. Inspection13.1 Unless otherwise specified in the purchase order orcontract, the manufacturer is responsible for the performanceof all inspection and test requirements specified in this speci-fication. Except as otherwise specified in the purchase order orcontract, the manufacturer sh
48、all use his own or other suitablefacilities for the performance of the inspection and testrequirements, at his option, unless disapproved by the pur-chaser at the time the order is placed. The purchaser shall havethe right to perform any of the inspection and tests prescribedin this specification wh
49、en such inspections and tests aredeemed necessary to ensure that the material conforms toprescribed requirements.14. Rejection and Rehearing14.1 Material that fails to conform to the requirements ofthis specification is subject to rejection. Rejection shall bereported to the producer or supplier promptly and in writing. Incase of dissatisfaction with the results of the test, the produceror supplier shall make claim for a rehearing.15. Certification15.1 When specified in the purchase order or contract, aproducers or suppliers cert
