1、Designation: A 641/A 641M 09Standard Specification forZincCoated (Galvanized) Carbon Steel Wire1This standard is issued under the fixed designationA 641/A 641M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revis
2、ion. 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.1. Scope*1.1 This specification covers soft, medium, and ha
3、rd 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 to orders in eitherinc
4、h-pound units (as A 641) or SI units (as A 641M). 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 system shall be used
5、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 The text of this sp
6、ecification 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:2A 90/A 90M Test Method for Weight Mass of Coating onIr
7、on and Steel Articles with Zinc or Zinc-Alloy CoatingsA 700 Practices for Packaging, Marking, and LoadingMethods for Steel Products for ShipmentA 902 Terminology Relating to Metallic Coated Steel Prod-uctsB6 Specification for ZincE8 Test Methods for Tension Testing of Metallic MaterialsE29 Practice
8、for Using Significant Digits in Test Data toDetermine Conformance with Specifications3. Terminology3.1 DefinitionsFor definitions of terms used in this speci-fication, refer to Terminology A 902.4. Classification4.1 TemperThe wire is classified with regard to mechani-cal properties by temper, which
9、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 coating.”NOTE 1Class 2 coating h
10、as 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 specification shall includethe following in
11、formation: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 (soft, medium, or hard) (Table 4
12、 or Table 5),5.1.6 ASTM designation and year of issue as A 641_for inch-pound units, or A 641M-_ for SI units.5.1.7 Supplementary Requirements (if required).NOTE 2A typical ordering description (inch-pound units) is as fol-lows: 50 000 lb, 0.120 in., zinc-coated wire, Class 1 coating, soft temperin
13、1500lb coils on tubular carriers to ASTM A 641_.NOTE 3A typical ordering description (SI units) is as follows: 50 000kg, 3.00 mm., zinc-coated wire, Class 1 coating, soft temper in 1000kgcoils on tubular carriers to ASTM A 641M_.6. Materials and Manufacture6.1 The steel from which the wire is produc
14、ed shall be madeby any commercially accepted steel making process.1This specification is under the jurisdiction of ASTM Committee A05 onMetallic-Coated Iron and Steel Products and is the direct responsibility ofSubcommittee A05.12 on Wire Specifications.Current edition approved Jan. 1, 2009. Publish
15、ed January 2009. Originallyapproved in 1992. Last previous edition approved in 2003 as A 641/A 641M - 03.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standar
16、ds Document Summary page onthe ASTM website.1*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.6.2 The slab zinc when used shall be any grade of zincconforming to Specifi
17、cation B 6.7. Mechanical 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 57.2 Test specimens found to contain a weld or obviousimperfections shall be d
18、iscarded and another test specimenobtained to verify conformance to the tensile strength require-ments.8. Permissible Variations8.1 The permissible variation in diameter of the zinc-coatedwire as represented by the test specimens shall meet therequirements shown in Table 6 or Table 7.9. Weight Mass
19、of Coating9.1 The zinc-coated wire, as represented by the test speci-mens tested in accordance with Section 12 and Test Method A90/A 90M, shall conform to the requirements of Table 1, Table2,orTable 3 for minimum weight mass of zinc coating of theclass specified. Individual results not more than 10
20、% belowthe minimum values specified in Table 1, Table 2,orTable 3are allowed, if the average of at least two samples from thesame coil are equal to or greater than the minimum valuespecified in Table 1, Table 2,orTable 3.9.2 Zinc-coated wire produced as “regular coating” shallhave the full surface c
21、overed 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 capable of being wrapped in a close helix at arate not exceeding 15 turns/min around a cylindrical steelmandrel having a diameter as p
22、rescribed 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 detachment during the adhesion test of superfi-cial, small particles of zinc formed by mechanical polishing ofthe surface of the zin
23、c-coated wire shall not be consideredcause for rejection.11. Workmanship, Finish, and Appearance11.1 The zinc-coated wire shall be free of slivers, scale, andother imperfections not consistent with good commercialpractice. The coating shall be continuous and reasonablyuniform. To ensure large contin
24、uous length coils, welds arepermitted in the finished wire.12. 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 control procedures and themanufacturing facilities of each
25、 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 is less.12.2 A wire sample of sufficient length, approxim
26、ately 4 ft1.2 m, shall be cut from either end of each coil selected fortests described in Sections 7, 8, 9, and 10.TABLE 1 Minimum Weight Mass of Zinc per Unit Area of Uncoated Wire Surface (Inch-Pound Units)Wire Diameter in.AClass 1Class 3 or A Coating,oz/ft2Class 4 Coating,oz/ft2Class B Coating,oz
27、/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 0.65 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 1.2
28、0 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 2.700.162 0.35 0.90 1.20 1.80 2.00 2.700.177 0.44 0.90 1.20 1.80 2.00 2.700.19
29、2 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 Mass of Zinc per Unit Area ofUncoated Wire Surface (SI Units)Wire Diamet
30、er, 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 under 3.20 853.20 to under 4.00 1004.00 to under 4.90 1154.90 to under 5.90
31、 1505.90 and over 190A 641/A 641M 09212.3 If one or more of the wire specimens fail any require-ment, the lot shall be subjected to retest. For retest purposes,the original lot shall be regrouped into 50 coil lots or fractionsthereof. Each lot shall be 10 % tested for the property in whichthe origin
32、al sample failed to comply. The number of samplesthus selected shall be at least twice the number of the originalsampling. Any lot that exhibits a failure shall be rejected.12.3.1 The manufacturer has the option of testing each coilin the failed lot for the property in which the failure occurred,rej
33、ecting the nonconforming coils. The coils which conformfor the property tested shall be deemed to conform to thespecification requirements.13. Inspection13.1 Unless otherwise specified in the purchase order orcontract, the manufacturer is responsible for the performanceTABLE 3 Minimum Weight Mass of
34、 Zinc per Unit Area of Uncoated Wire Surface (SI Units)Diameter, mmAClass 3 or A Coating, 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
35、 198 n/a 366 n/a 5491.90 214 366 427 610 6412.00 214 366 427 610 6412.30 229 366 458 610 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
36、 610 915and largerACoating weights mass for diameters other than those shown in this 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
37、100 90 to 1200.080 to under 0.106 75 max 70 to 95 85 to 1150.106 to 0.176A, incl 70 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, andobserved value shall be rounded to the nearest 1 Ksi in accordance with therounding me
38、thod of Practice E29.TABLE 5 Tensile Strength for Temper Designation (SI Units)Wire 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
39、715AFor the purpose of determining conformance with this specification, anobserved value shall be rounded to the nearest 1 MPa in accordance with therounding method of Practice E29.TABLE 6 Diameter Tolerance for Zinc-Coated Wire in Coils (Inch-Pound Units)AWire Diameter, in.ToleranceBPlus and Minus,
40、 in.Regular and Class 1CoatingClass 3, 4, 5 or B andC Coating0.035 to under 0.076 0.002 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, anobserved value shall be rounded t
41、o the nearest 0.001 in. in accordance with therounding method 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 6 shall not be rigidly applied t
42、o such irregularitiesthat are inherent to the product, so that unjustified rejections 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
43、 in Coils (SIUnits)AWire Diameter, mmToleranceB, Plus and Minus, mmRegular and Class 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 specificati
44、on, anobserved value shall be rounded to the nearest 0.01 mm in accordance with therounding method 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 T
45、able 7 shall not be rigidly applied to such irregularitiesthat are inherent to the 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.TABLE 8 Man
46、drel Diameters for Test for Adherence of ZincCoating (Inch-Pound Units)Wire Diameter, in.Mandrel Diameters for Coating ClassesRegular and 1Class 3, 4, 5 or A, B,and C0.035 to under 0.076 1DA2DA0.076 to under 0.148 1D 3D0.148 to 0.500, incl 2D 4DAD = nominal wire diameter being tested.A 641/A 641M 09
47、3of all inspection and test requirements specified in this speci-fication. Except as otherwise specified in the purchase order orcontract, the manufacturer shall use his own or other suitablefacilities for the performance of the inspection and testrequirements, at his option, unless disapproved by t
48、he 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 when such inspections and tests aredeemed necessary to ensure that the material conforms toprescribed requirements.14. Rejection and Rehearing14
49、.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 certification shall be furnished to thepurchaser that the material was manufactured, sampled, tested,and inspected in accordance with this specifi
