1、Designation:A36895a(Reapproved 2013)Standard Specification forStainless Steel Wire Strand1This standard is issued under the fixed designation A368;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in
2、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 stainless steel wire strandcomposed of a multiplicity of round wires and suitable for useas guy wires,overhead ground wires
3、,and similar purposes.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.2.Referenced Documents2.1 ASTM Standards:2A555/A555M Specificati
4、on for General Requirements forStainless Steel Wire and Wire RodsA751 Test Methods,Practices,and Terminology for Chemi-cal Analysis of Steel Products3.Ordering Information3.1 It is the responsibility of the purchaser to specify allrequirements that are necessary for material ordered under thisspecif
5、ication.Such requirements may include,but are notlimited to,the following:3.1.1 Quantity(length of strand or weight of quantityordered,or both;see 13.1 and Table 1),3.1.2 Name of material(stainless steel),3.1.3 Form(wire strand in coils or on reels),3.1.4 Applicable dimensions(for nominal strand dia
6、meter,see Table 1),3.1.5 Number of wires per strand(Table 1),3.1.6 Minimum breaking strength(medium or highstrength),3.1.7 Type designation(see Section 7),3.1.8 ASTM designation,and date of issue,and3.1.9 Special requirements,if any.NOTE1A typical ordering description is as follows:1000 ft,stainless
7、steel 7-wire strand,716-in.diameter,medium strength,on reel,Type 302,ASTM A368 dated _.4.General Requirements for Delivery4.1 In addition to the requirements of this specification,allrequirements of the current edition of Specification A555/A555M shall apply.Failure to comply with the generalrequire
8、ments of Specification A555/A555M constitutes non-conformance with this specification.5.Stranding5.1 Three-wire strand shall have a left lay with a uniformpitch of not less than 10 nor more than 16 times the nominaldiameter of the strand.Seven-wire strand and the outer layer of19-wire strand,shall h
9、ave a left lay with a uniform pitch of notless than 12 nor more than 16 times the nominal diameter of thestrand.A left lay is defined as a counter-clockwise twist awayfrom the observer.All wires shall be stranded with uniformtension.Stranding shall be sufficiently close to ensure noappreciable reduc
10、tion in diameter when stressed to 10%of thespecified strength.5.2 All wires in the strand shall lie naturally in their truepositions in the completed strand,and when the strand is cut,the ends shall remain in position or be readily replaced by handand then remain in position.This may be accomplished
11、 by anymeans or process,such as preforming,post forming,or formsetting.6.Joints6.1 There shall be no strand joints or strand splices in anylength of the completed strand.6.2 In 3-wire strand,there shall be no joints in the individualwires.6.3 In 7-wire strand,joints in individual wires shall beaccep
12、table provided there is not more than one joint in any150-ft(46-m)section of the completed strand and the locationof each wire joint is marked on the strand with paint or someother distinguishing mark.6.4 In 19-wire strand,joints in the individual wires of theouter layer of 12 wires shall be accepta
13、ble provided there is notmore than one joint in any 150-ft(46-m)section and thelocation of each wire joint is marked on the strand with paint1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of Subcommitte
14、eA01.17 on Flat-Rolled and Wrought Stainless Steel.Current edition approved Oct.1,2013.Published October 2013.Originallyapproved in 1953.Last previous edition approved in 2009 as A368 95a(2009).DOI:10.1520/A0368-95AR13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM
15、 Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1Copyright by ASTM Intl(all rights rese
16、rved);or some other distinguishing mark.Joints in the 7-wire innerlayer of 19-wire strand shall be acceptable provided there is notmore than one joint in any 150-ft section.6.5 Joints in the individual wires shall be flash or upsetbutt-welded.Care shall be taken to prevent injury to the wireduring welding.7.Chemical Composition7.1 The steel shall be Type 302,304,305,316,316Cb,or316Ti and shall conform to the requirements as to chemicalcomposition specified in Table 2.7.2 Methods and practices re