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    ASTM F964-2002 Standard Specification for Rigid Poly (Vinyl Chloride) (PVC) Exterior Profiles Used for Fencing《护栏用硬质聚氯乙烯外部轮廓的标准规范》.pdf

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    ASTM F964-2002 Standard Specification for Rigid Poly (Vinyl Chloride) (PVC) Exterior Profiles Used for Fencing《护栏用硬质聚氯乙烯外部轮廓的标准规范》.pdf

    1、Designation: F 964 02Standard Specification forRigid Poly (Vinyl Chloride) (PVC) Exterior Profiles Used forFencing and Railing1This standard is issued under the fixed designation F 964; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revisio

    2、n, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification establishes requirements for the ma-terial properties and physical properties, incl

    3、uding dimensionaltolerances, extrusion quality, and weatherability, of rigid polyvinyl-chloride (PVC) exterior profiles used for agricultural,commercial, residential fencing and railing. Methods for test-ing and for identifying exterior profile extrusions that complywith this specification are also

    4、provided.NOTE 1Information with regard to application, assembly, and instal-lation should be obtained from the manufacturer and/or per ASTMXXXX.1.2 The material used in these exterior-profiles is limited torigid poly (vinyl chloride) (PVC) compounds in a singlehomogeneous extrusion or in a coextrusi

    5、on of two or morePVC compounds in distinct layers.1.3 Color-hold guidelines are provided in an appendix forthe manufacturers product development and quality perfor-mance use.1.4 The values stated in inch-pound units are to be regardedas the standard. The values in parentheses are provided forinforma

    6、tion only.1.5 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Re

    7、ferenced Documents2.1 ASTM Standards:D 618 Practice for Conditioning Plastics for Testing2D 635 Test Method for Rate of Burning and/or Extent andTime of Burning of Self-Supporting Plastics in a Horizon-tal Position2D 696 Test Method for Coefficient of Linear Thermal Ex-pansion of Plastics Between 30

    8、C and 30C2D 883 Terminology Relating to Plastics2D 1435 Practice for Outdoor Weathering of Plastics2D 1600 Terminology for Abbreviated Terms Relating toPlastics2D 1784 Specification for Rigid Poly (Vinyl Chloride)(PVC) Compounds and Chlorinated Poly (Vinyl Chloride)(CPVC) Compounds2,3D 1898 Practice

    9、s for Sampling of Plastics2D 2244 Test Method for Calculation of Color DifferencesFrom Instrumentally Measured Color Coordinates4D 2444 Test Method for Determination of the Impact Re-sistance of Thermoplastic Pipe and Fittings by Means of aTup (Falling Weight)3D 4216 Specification for Rigid Poly Vin

    10、yl Chloride PVCand Related PVC and Chlorinated Poly Vinyl ChlorideCPVC Building Products Compounds5D 4226 Test Methods for Impact Resistance of Rigid PolyVinyl Chloride PVC Building Products3D 4726 Specification for White Rigid Poly (Vinyl Chloride)(PVC) Exterior-Profile Extrusions Used for Assemble

    11、dWindows and Doors33. Terminology3.1 GeneralDefinitions are in accordance with Terminolo-gies D 883 and D 1600, unless otherwise indicated.3.2 Definitions of Terms Specific to This Standard:3.2.1 capstockthe outer layer in a coextrusion exposed toweathering.3.2.2 coextrusionthe process of coextrudin

    12、g profiles fromtwo or more concentric streams of PVC compounds.NOTE 2Separate PVC materials may be coextruded to form a multi-layered profile with each layer having different physical characteristicssuch as strength and weathering.3.2.3 reworked materialmaterial from the manufacturersfacility of kno

    13、wn, compatible composition meeting the mate-rial requirement of this specification that has been reground,pelletized, or solvated after having been previously processedby molding, extrusion, and so forth.3.2.4 single layer profileprofiles extruded from a singlePVC compound. Weathering and other phys

    14、ical characteristics1This specification is under the jurisdiction of ASTM Committee F14 on Fencesand is the direct responsibility of Subcommittee F14.30 on Rigid Polymer FenceSystems.Current edition approved January 10, 2002. Published March 2002. Originallypublished as F 964 94. Last previous editi

    15、on F 964 94.2Annual Book of ASTM Standards, Vol 08.01.3Annual Book of ASTM Standards, Vol 08.04.4Annual Book of ASTM Standards, Vol 06.01.5Annual Book of ASTM Standards, Vol 08.02.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.are u

    16、niform throughout the profile.3.2.5 substrateinner layer(s) of a coextrusion not exposedto weathering.3.2.6 temperate northern climatein weather testing, aNorth American metropolitan area testing site located within73 to 100 W longitude and 37 to 45 N latitude.3.2.7 color-hold guidelinespredictive t

    17、arget color regionswithin a three-dimensional model which constitute acceptableappearance retention levels of color change resulting fromweathering of specific product type and color.NOTE 3Commercial products which demonstrate weathering behav-ior within reasonable conformance to these target guidel

    18、ines during a2year test period can be anticipated to weather without exhibitingunacceptable color changes during the service life of the product.4. Significance and Use4.1 The purpose of this specification is to establish arecognized standard of quality for rigid poly vinyl chloride(PVC) exterior pr

    19、ofiles for use in assembling agricultural,commercial, and residential fencing and railing. The term“PVC fence” refers to complete fencing and railings systems inwhich the primary structural members such as posts, rails,spindles, pickets, and gates are made from PVC exteriorprofiles. Accessory compon

    20、ents (not included in this specifi-cation), including bolts, screws, hinges, and latches, may bemade from PVC and/or non-PVC materials. The informationcontained in this specification is intended to be helpful toproducers, distributors, and users and to promote understand-ing between purchasers and s

    21、ellers.5. Materials and Manufacture5.1 The rigid poly vinyl chloride (PVC) compound forexterior-profile extrusions meeting the requirements of thisspecification are categorized by the cell class requirements inaccordance with Specification D 4216.5.2 The PVC compounds used for the products meeting t

    22、hisspecification shall meet cell Class 110154330000, Class120131130000, or Class 140131130000 as defined inSpecification D 4216. Compounds that have higher cell clas-sification because one or more properties are superior to thosein the specified compound are acceptable.5.3 ColorThe color of the prof

    23、iles shall be as agreed uponbetween the purchaser and the seller. The color specified shallbe uniform throughout a single material extrusion or through-out the capstock layer of a coextruded profile for profilesintended to be of uniform color.5.4 The fence profiles shall be free from visible cracks,

    24、holes, foreign inclusions, or other defects.5.5 The PVC compound, when tested in accordance withTest Method D 635, shall not exceed an average extent of burnof 4 in. (100 mm), with an average time of burn not to exceed10 s. A sample thickness of 0.090 6 0.009 in. (2.3 6 0.2 mm)shall be used.NOTE 4Th

    25、e flammability testing data, conclusions, and recommen-dations of Test Method D 635 relate solely to the measurement anddescription of the properties of materials, products, or systems in responseto heat and flame under controlled laboratory conditions and should not beused for the description or ap

    26、praisal of the fire hazard of materials,products, or systems under actual fire conditions.NOTE 5No recycled (post consumer waste) may be used in theproduction of fence profiles.5.6 Reworked MaterialClean reworked material may beused, provided that the fence profiles produced in whole or inpart from

    27、the reworked materials meet all of the requirementsof this specification.5.7 The PVC compound in extruded section shall maintainuniform color and be free of any visual surface or structuralchanges, such as peeling, chipping, cracking, flaking, or pittingafter weathering for six months and one year f

    28、or white and forsix months, one year, and two years for all other colors in hot,dry climate such as Phoenix, AZ; a hot humid climate, such asMiami, FL; and a temperate northern climate, when tested inaccordance with 7.1.1-7.1.4.5.8 The PVC compound shall have a minimum impactresistance of 0.6 in.-lb

    29、/mil (2670 J/m) after weathering sixmonths and one year in a hot, dry climate such as Phoenix, AZ;a hot, humid climate, such as Miami, FL; and a temperatenorthern climate, when tested in accordance with 7.1.1-7.1.4.5.9 The PVC compound shall have successfully met theweathering requirements prescribe

    30、d in 5.7 and 5.8 for sixmonths at each climatic testing site prior to use in productionof exterior-profile extrusions, when tested in accordance with7.1.1-7.1.4.NOTE 6The six-month test requirement constitutes a screening pro-cess to eliminate catastrophic failure.6. Physical Requirements6.1 Length,

    31、 Height, and WidthThe specified length,height, and width of the fencing profiles shall be as agreedupon between the purchaser and the seller, or by establishedinternal process control standards. The actual length shall bewithin 614 in. (6.4 mm) of the specified length and the actualheight and width

    32、shall be within116in. (1.6 mm) of thespecified height and width when measured in accordance with8.4 and 8.5.6.2 Weight ToleranceProfile extrusion weight shall not bemore than 10 % below the specified profile weight indicated inthe manufacturers specifications.6.3 Impact Resistance6.3.1 Round or rect

    33、angular profiles with exterior walls ofuniform thickness and without internal webs shall be tested inaccordance with Test Method D 2444. These profiles will havea minimum impact failure value of 0.75 ft-lbf/mil (40,050 J/m)of thickness of the wall when tested at 32F (0C) and 1.5ft-lbf/mil (80,050 J/

    34、m) when tested at 73.4F (23C) whentested in accordance with the apparatus section of Test MethodD 2444, using the “B tup and flat plate Holder “B. Theminimum wall thickness for the profile shall determine therequired impact level when tested in accordance with 8.6.6.3.2 All other profiles are to be

    35、tested in accordance withtest method D 4226, Procedure “B,” using impactor C.125. Flatsections of the profile extrusion shall have a minimum brittleimpact failure of 1.2 in. lb/mil (5340 J/m).6.4 WarpThe maximum allowable warp shall be 0.5 % ofthe length of the fence profile when determined in accor

    36、dancewith 8.7.6.5 Dimensional StabilityThe dimensional stability of theprofile extrusions shall be determined in accordance with 8.9.F 9642Extrusions shall have a maximum average shrinkage of 2.4 %for all sides measured, with no single value exceeding 3 %.NOTE 7Expansion and contraction of the fence

    37、 profile lengths mustbe taken in consideration in the design of the fencing system.6.6 Coeffcient of Linear ExpansionThe fencing profilesshall have a coefficient of linear expansion not greater than 4.43 105in./in. F (7.9 3 105mm/mm C) when tested inaccordance with Test Method D 696.NOTE 8Expansion

    38、and contraction of the fence profile lengths mustbe taken in consideration in the design of the fencing system.6.7 Thickness of PVC CapstockPVC fence profiles pro-duced by coextrusion, which contain two or more layers, shallhave an outer layer (capstock) that is no less than 0.015 in.(0.38 mm) thick

    39、 at any point and that does not exceed 20 % ofthe total wall thickness at any point.6.8 BondFor PVC profiles produced by coextrusion, thebond between the layers shall be strong and uniform. It shallnot be possible to separate any two layers with a probe or pointof a knife blade so that the layers se

    40、parate at any point.7. Performance Requirements7.1 Weathering7.1.1 The exposures listed in Table 1 shall be conducted inorder to meet the requirements of this specification. Allexposures shall be conducted at an angle of 45 degrees South,plywood backed, in accordance with Practice D 1435.7.1.2 After

    41、 six months and one year exposure times, theminimum mean impact for 20 measurements conducted on theexposed specimens shall be at least 0.6 in. lb/mil (2670 J/m) inaccordance with 8.6 or 8.9 respectively.7.1.3 After each exposure time, the tested specimens shallmaintain a uniform color and be free o

    42、f any visual surface orstructural changes such as peeling, chipping, cracking, flaking,and pitting when tested in accordance with Appendix X1.NOTE 9It is recommended that manufacturers utilize the color-holdguidelines in Appendix X1 of D 4726 to ensure quality performance.7.1.4 Weatherability confor

    43、mance testing requirements areto reflect performance of a “typical” extrusion system profilerepresenting a specific PVC compound and a specific extrusiontechnology. In no case is there an implied requirement fortesting all the various shaped profiles. The profile extrusionproducer shall immediately

    44、respond in terms of compoundchange or extrusion technology change to unsatisfactoryweatherability behavior of the profiles under test in anyclimatic test site at any stage of the weatherability testing.8. Test Methods8.1 GeneralThe inspection and test procedures containedin this section are used to

    45、determine the conformance ofproducts to the requirements of this specification. Each pro-ducer who represents his products as conforming to thisspecification may utilize statistically based sampling plans thatare appropriate for each manufacturing process. The producershall keep the essential record

    46、s necessary to document with ahigh degree of assurance his claim that all the requirements ofthis specification have been met. Additional sampling andtesting of the products, as may be agreed upon between thepurchaser and the seller at the time of the execution of the salesagreement, are not preclud

    47、ed by this section.8.2 Conditioning and Test Conditions:8.2.1 Specimens to be tested at 73.4 6 3.6F (23 6 2C)shall be conditioned in accordance with Practice D 618 for noless than one hour. Specimens to be tested at 32 6 3.6F (06 2C) shall be continued in accordance with Practice D 618for no less th

    48、an one hour.8.3 SamplingThe selection of sample or samples of fenceprofiles shall be as agreed upon between the purchaser and theseller. In the absence of any prior agreement, the selection ofsample or samples of fence shall be in accordance with thepertinent considerations outlined in Practices D 1

    49、898.8.3.1 Sample MarkingSamples being tested at a testlaboratory, not at the manufacturers location, shall be markedwith a verifiable and permanent marking that shall identify themanufacturer.8.3.2 The number of specimens or the size of the specimenmust be sufficient to obtain 20 impact locations of the droppeddart for each weathering interval.8.3.3 The thickness of any profile tested must not differfrom the manufacturers published specification of the sameprofile.8.4 LengthWith the sample lying on a flat surf


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