1、Designation: A899 91 (Reapproved 2014)Standard Specification forSteel Wire, Epoxy-Coated1This standard is issued under the fixed designation A899; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number
2、in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers steel wire in the size range of0.120 to 0.500 in. (3.05 to 12.7 mm) with three classes ofprotective epoxy coating, i
3、n coils, for general use. Class Acoating is intended for use for moderate corrosion protection,Class B coating for more severe protection, and Class C forsevere corrosion and abrasion protection.NOTE 1The coating applicator is identified throughout this specifica-tion as the manufacturer.1.2 The val
4、ues stated in inch-pound units are to be regardedas the standard. The SI units given in parentheses are forinformation only.2. Referenced Documents2.1 ASTM Standards:2A510 Specification for General Requirements for Wire Rodsand Coarse Round Wire, Carbon SteelA775/A775M Specification for Epoxy-Coated
5、 Steel Rein-forcing BarsA853 Specification for Steel Wire, Carbon, for General UseG12 Test Method for Nondestructive Measurement of FilmThickness of Pipeline Coatings on Steel (Withdrawn2013)33. Ordering Information3.1 The purchaser shall specify the following:3.1.1 Wire size (the nominal diameter o
6、f the coated wire),3.1.2 Quantity,3.1.3 Class of coating, and3.1.4 Method of packaging, such as, coils, coils on steelreels, etc.3.2 The purchaser may specify the following if desired:3.2.1 Requirements for certification (see 14.1),3.2.2 Requirements for patching material (see 4.3),3.2.3 Specific re
7、quirements for test frequency (see 8.1), and3.2.4 Requirements for outside inspection of manufacturingplant.NOTE 2A typical ordering description for wire is as follows: 40 000lb of epoxy coated wire, ASTM A853, 0.148 in. diameter, Grade 1018with a Class A epoxy coating in 1000 lb coils on steel reel
8、s to ASTMA899.4. Materials and Manufacture4.1 Steel wire to be coated shall meet the requirements ofthe purchaser or the requirements of an applicable general wirespecification such as Specification A510 and SpecificationA853, and shall be free of surface contaminants such as oil,grease, or paint wh
9、en received at the manufacturers plant andprior to cleaning and coating.4.2 The coating material shall meet the requirements listedin Annex A1 of Specification A775/A775M.4.2.1 If specified in the order, a written certification shall befurnished to the purchaser that properly identifies the numberof
10、 each batch of coating material used in the order, material,quantity represented, date of manufacture, name and address ofmanufacturer, and a statement that the supplied coating mate-rial meets the requirements of Annex A1 of SpecificationA775/A775M.4.3 If specified in the order, patching material,
11、compatiblewith the coating material and meeting the requirements ofAnnex A1 of Specification A775/A775M shall be supplied tothe purchaser.5. Surface Preparation5.1 The surface of the steel wire to be coated shall becleaned by abrasive blast cleaning or chemical cleaning prior tocoating to ensure pro
12、per adherence of the epoxy to the steelsurface.5.2 Prior to abrasive blast cleaning, the surface of the wireto be coated may be cleaned in an aqueous solution to removeresidual wire drawing lubricants.6. Application of Coating6.1 The coating shall be applied to the cleaned surface assoon as possible
13、 after cleaning, and before oxidation of thesurface discernible to the unaided eye occurs.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.03 on Steel Rod and Wire.Current edition appro
14、ved March 1, 2014. Published April 2014. Originallyapproved in 1990. Last previous edition approved in 2007 as A899 91 (2007).DOI: 10.1520/A0899-91R14.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStan
15、dards 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.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States16.2 The coat
16、ing shall be applied and properly cured inaccordance with the recommendations of the manufacturer ofthe coating material to satisfy the product requirements.7. Requirements for Coated Wire7.1 Thickness of Coating:7.1.1 Class AThe film thickness of the coating after curingshall be 5 mils minimum (0.1
17、3 mm).7.1.2 Class BThe film thickness of the coating aftercuring shall be 10 mils minimum (0.25 mm).7.1.3 Class CThe film thickness of the coating aftercuring shall be 20 mils minimum (0.51 mm).7.1.4 The thickness of the coating film shall be measured inaccordance with Test Method G12, or other thic
18、kness-measuring methods acceptable to the purchaser. Foracceptance, 90 % of these measurements shall be within thespecified limits. The five recommendations contained inA1.3.4.1 in Annex A1 of Specification A775/A775M applywhen the coating thickness is measured as follows:7.1.4.1 In accordance with
19、Test Method G12, and7.1.4.2 With commercially available pull-off gauges andfixed probe gauges having a magnetic field of vision notexceeding 0.015 in. (0.38 mm) of steel depth.7.2 Continuity of Coating:7.2.1 After curing, the coating shall be free of holes, voids,cracks, and damaged areas discernibl
20、e to the unaided eye.7.2.2 There shall not be more than an average of oneholiday, (pinholes not discernible to the unaided eye) per linearfoot (3 holidays per linear metre) of wire.7.2.3 Holiday checks to determine acceptability of the wireshall be made at the manufacturers plant with a 67.5 V d-cho
21、liday detector.7.3 Adherence of Coating:7.3.1 The epoxy coated wire shall be capable of beingwrapped in a closed helix at a rate not exceeding 15 turns perminute around a cylindrical steel mandrel having a diameter oftwo times the wire diameter being tested.7.3.2 No cracking or disbonding of the coa
22、ting from thewrap test of 7.3.1 shall be visible to the unaided eye. Except asspecified in 9.1, evidence of cracking or disbonding of thecoating shall be considered cause for rejection of the coatedwire represented by the wrap test sample.7.4 Mechanical TestsAll specified mechanical tests shallbe ma
23、de on the coated wire with the tensile strength basedupon the diameter of the uncoated steel core wire. When tensiletesting, portions of the coating may be removed for ease ofgripping specimen in the tensile testing machine.7.5 Size Tolerance:7.5.1 The coated wire shall have a size tolerance of plus
24、 orminus 0.004 in. (0.10 mm) maximum from the orderednominal diameter.7.5.2 The uncoated wire intended for epoxy coating shall beproduced to a size tolerance that will allow the epoxy coatedwire to meet the tolerances of 7.5.1. However in no case willthe size tolerance of the uncoated wire be requir
25、ed to be morerestrictive than one-half the values of permissible variation indiameter of Table 3 of Specification A510.7.6 Place of TestingTests for coating of steel wire shall bedone at the manufacturers plant prior to shipment.7.7 Time of TestingAll requirements for coated wire shallbe met at the
26、manufacturers plant prior to shipment.8. Number of Tests8.1 The purchaser may specify the sampling and test sched-ule for the number and frequency of tests for thickness ofcoating, adhesion of coating, and continuity of coating.8.2 If the number and frequency of tests are not specified bythe purchas
27、er:8.2.1 Tests for thickness of coating and continuity of coatingshall be made on each size of wire coated during eachproduction hour.8.2.2 Bend tests for adhesion of coating shall be conductedon at least one wire of each size from each production shift.9. Retests9.1 If the specimen for coating thic
28、kness or adhesion ofcoating fails to meet the specified requirements, two retests onrandom samples shall be conducted for each failed test. If theresults of both retests meet the specified requirements, thecoated material represented by the samples shall be accepted.10. Handling and Identification10
29、.1 All systems for handling coated wire shall have paddedcontact areas. Suitable banding shall be used to preventdamage to the coating.10.2 The identification of all wire shall be maintainedthroughout the coating process to the point of shipment.11. Inspection11.1 The inspector representing the purc
30、haser shall havefree entry, at all times while work on the contract of thepurchaser is being performed, to all parts of the manufacturersworks that concern the manufacturer of the material ordered.The manufacturer shall afford the inspector all reasonablefacilities to satisfy that the material is be
31、ing furnished inaccordance with this specification. All tests and inspectionsshall be made at the place of manufacture prior to shipment,unless otherwise specified, and shall be so conducted as not tointerfere unnecessarily with the operation of the works.12. Permissible Coating Damage Due to Handli
32、ng andProcessing12.1 All damaged areas of each wire shall be repaired withpatching material.12.2 The maximum amount of damage shall not exceed 1 %of the surface area per linear foot (300 mm) of each wire.12.3 Patching shall be done in accordance with the patchingmaterial manufacturers recommendation
33、.13. Rejection and Rehearing13.1 Coated steel wire represented by test samples that donot meet the requirements of this specification shall be re-jected. At the manufacturers option, such wire shall beA899 91 (2014)2replaced or, alternatively, may be stripped of coating,recleaned, recoated, and resu
34、bmitted for acceptance testing inaccordance with the requirements of this specification.14. Certification14.1 Upon request of the purchaser, the manufacturer shallfurnish, at the time of shipment, written certification that thecoated steel wire meets the requirements of this specificationand a copy
35、of the manufacturers quality control tests.14.2 The certification shall include the specificationnumber, year date of issue, and revision letter, if any.15. Keywords15.1 epoxy coated; wireASTM International takes no position respecting the validity of any patent rights asserted in connection with an
36、y item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical
37、 committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration a
38、t a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor
39、Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).A899 91 (2014)3
