ASTM_F_668_-_17.pdf

Designation:F66817Standard Specification forPolyvinyl Chloride(PVC),Polyolefin and Other Polymer-Coated Steel Chain Link Fence Fabric1This standard is issued under the fixed designation F668;the number immediately following the designation indicates the year of originaladoption or,in the case of revision,the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers polyvinyl chloride and otherconforming organic polymer-coated steel chain-link fabric,coated before weaving.Polyvinyl chloride,polyolefin,andother organic polymer coating hereinafter will be designated aspolymer coating.1.2 Fabric produced from three classes of wire coatings arecovered as follows:1.2.1 Class I consists of polymer coatings extruded overzinc-coated,aluminum-coated,or zinc-5%aluminum-mischmetal alloy-coated,or zinc-5%aluminum-mischmetalalloy-coated steel wire.1.2.2 Class 2a consists of polymer coating extruded andadhered to zinc-coated,aluminum-coated,or zinc-5%aluminum-mischmetal alloy-coated steel wire.1.2.3 Class 2b consists of polymer coating fused andadhered to zinc-coated,aluminum-coated,or zinc-5%aluminum-mischmetal alloy-coated steel wire.1.3 The values stated in inch-pound units are to be regardedas the standard.The values given in parentheses are providedfor information only.2.Referenced Documents2.1 ASTM Standards:2A90/A90M Test Method for Weight Mass of Coating onIron and Steel Articles with Zinc or Zinc-Alloy CoatingsA370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA428/A428M Test Method for Weight Mass of Coating onAluminum-Coated Iron or Steel ArticlesD1499 Practice for Filtered Open-Flame Carbon-Arc Expo-sures of PlasticsF552 Terminology Relating to Chain Link FencingF934 Specification for Colors for Polymer-Coated ChainLink Fence MaterialsG152 Practice for Operating Open Flame Carbon Arc LightApparatus for Exposure of Nonmetallic MaterialsG153 Practice for Operating Enclosed Carbon Arc LightApparatus for Exposure of Nonmetallic MaterialsG155 Practice for Operating Xenon Arc Light Apparatus forExposure of Non-Metallic Materials2.2 U.S.Federal Standard:Fed.Std.No.123 Marking for Shipments(Civil Agencies)32.3 U.S.Military Standards:MIL-STD-129 Marking for Shipment and Storage33.Terminology3.1 DefinitionsFor definitions of terms such as chain-linkfence fabric,selvage,knuckle,twist,and diamond count,seeTerminology F552.4.Ordering Information4.1 Orders for chain-link fence fabric purchased to thisspecification shall include the following information:4.1.1 Quantity.4.1.2 Class of polymer coating to be applied to the metallic-coated core wire.4.1.3 Color of coating(see 16.5.1).4.1.4 Size of mesh(see Table 1).4.1.5 Diameter of metallic-coated core wire or minimumbreaking strength,or both(see Tables 1-3).4.1.6 Height of fabric.4.1.7 Type of selvage if nonstandard(see 12.1 and 12.2).4.1.8 Diamond count if nonstandard(see 9.1 and Table 2).4.1.9 Certification,if required.4.2 Any tests required other than those specifically coveredin this specification must be stipulated by the purchaser in theorder or contract.1This specification is under the jurisdiction of ASTM Committee F14 on Fencesand is the direct responsibility of Subcommittee F14.40 on Chain Link Fence andWire Accessories.Current edition approved March 1,2017.Published March 2017.Originallyapproved in 1981.Last previous edition approved in 2011 as F668-11.DOI:10.1520/F0668-17.2For 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 standards Document Summary page onthe ASTM website.3Available from the procuring activity or as directed by the contracting office orfrom Standardization Documents Order Desk,Bldg.4 Section D,700 RobbinsAve.,Philadelphia,PA 19111-5094,Attn:NPODS.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 4.3 All rolls of fabric accepted by the purchaser shall bebilled to him on the basis of the original footage of the rollsbefore sampling,unless changed by contractual agreement.5.Materials5.1 Base MetalThe base metal shall be steel of suchquality and purity that,when drawn to the size of wire specifiedand coated with an organic polymer,the finished fencing shallbe of uniform quality and have properties and characteristics asprescribed in the specification.5.2 Wire used for the manufacture of fabric shall meet therequirements of this specification and shall be capable of beingwoven into fabri