1、Designation: D 4726 02An American National StandardStandard Specification forRigid Poly(Vinyl Chloride) (PVC) Exterior-Profile ExtrusionsUsed for Assembled Windows and Doors1This standard is issued under the fixed designation D 4726; the number immediately following the designation indicates the yea
2、r oforiginal adoption or, in the case of revision, 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. Scope *1.1 This specification establishes requirements for the
3、ma-terial properties, including dimensional stability, weatherabil-ity, and extrusion quality, of rigid poly(vinyl chloride) (PVC)exterior profile extrusions used for assembled windows anddoors. Methods for testing and for identifying exterior profileextrusions that comply with this specification ar
4、e also pro-vided.1.2 Rigid PVC recycled plastic may be used in this productin accordance with requirements in Section 5.NOTE 1Information with regard to application, assembly, and instal-lation should be obtained from the manufacturers of the profiles and of thewindows and doors.NOTE 2Refer to Speci
5、fication D 3678 for interior profile extrusions.1.3 Color-hold guidelines are provided in an appendix forthe manufacturers product development and quality perfor-mance use.1.4 Color-hold guidelines are presently limited to white,grey, beige, light brown, and dark brown (see Figs. X1.1through X1.5).
6、Additional colors will be added as colorguidelines are developed.1.5 The values stated in inch-pound units are to be regardedas the standard. The values in parentheses are for informationonly.NOTE 3There are no ISO standards covering the primary subjectmatter of this specification.1.6 The text of th
7、is standard references notes and footnoteswhich provide explanatory material. These notes and footnotes(excluding those in tables and figures) shall not be consideredas requirements of this standard.1.7 The following safety hazards caveat pertains only to thetest methods portion, Section 10, of this
8、 specification: Thisstandard does not purport to address all of the safety concerns,if any, associated with its use. It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2. Ref
9、erenced Documents2.1 ASTM Standards:D 618 Practice for Conditioning Plastics and ElectricalInsulating Materials for Testing2D 883 Terminology Relating to Plastics2D 1042 Test Method for Linear Dimensional Changes ofPlastics Under Accelerated Service Conditions2D 1435 Practice for Outdoor Weathering
10、of Plastics2D 1600 Terminology Relating to Abbreviations, Acronyms,and Codes for Terms Relating to Plastics2D 1898 Practice for Sampling of Plastics3D 2244 Test Method for Calculation of Color Differencesfrom Instrumentally Measured Color Coordinates4D 3678 Specification for Rigid Poly(Vinyl Chlorid
11、e) (PVC)Interior-Profile Extrusions5D 3892 Practice for Packaging/Packing of Plastics6D 4099 Specification for Poly(Vinyl Chloride) (PVC) PrimeWindows5D 4216 Specification for Rigid Poly(Vinyl Chloride) (PVC)and Related Plastic Building Products Compounds5D 4226 Test Method for Impact Resistance of
12、Rigid Poly-(Vinyl Chloride) (PVC) Building Products5D 5033 Guide for the Development of Standards Relating tothe Proper Use of Recycled Plastics6E 631 Terminology of Building Constructions7E 805 Practice for Identification of Instrumental Methods ofColor or Color-Difference, Measurement of Materials
13、81This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.24 on Plastic BuildingProducts.Current edition approved April 10, 2002. Published July 2002. Originallypublished as D 4726 87. Last previous edition D 4726 01.2Annual
14、Book of ASTM Standards, Vol 08.01.3Annual Book of ASTM Standards, Vol 08.02.4Annual Book of ASTM Standards, Vol 06.01.5Annual Book of ASTM Standards, Vol 08.04.6Annual Book of ASTM Standards, Vol 08.03.7Annual Book of ASTM Standards, Vol 04.07.8Annual Book of ASTM Standards, Vol 14.02.1*A Summary of
15、 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.G 147 Practice for Conditioning and Handling of Nonme-tallic Materials for Natural and Artificial Weathering Tests83. Terminology3.1
16、GeneralDefinitions are in accordance with Termi-nologies D 883 or E 631 and D 1600, unless otherwise indi-cated.3.2 Definitions of Terms Specific to This Standard:3.2.1 beige PVC profilea profile the color of which isdefined by the color space falling within the parameters LH=61 to 87, aH= 2.5 to 4.
17、0, and bH= 6.5 to 23.3.2.2 color-hold guidelinespredictive target color regionswithin a three-dimensional model which constitute acceptableappearance retention levels of color change resulting fromweathering of a specific product type and color.NOTE 4Commercial products which demonstrate weathering
18、behav-ior within reasonable conformance to these target guidelines during a2-year test period can be anticipated to weather without exhibitingunacceptable color changes.3.2.3 dark brown PVC profilea profile the color of whichis defined by the color space falling within the parameters LH=13to33,aH= 1
19、.0 to 6.0, and bH= 1.0 to 6.5.3.2.4 gray PVC profilea profile the color of which isdefined by the color space falling within the parameters LH=33 to 74, aH=3to4,andbH= 5.5 to 5.5.3.2.5 light brown PVC profilea profile the color of whichis defined by the color space falling within the parameters LH=3
20、0to60,aH= 1.5 to 12.5, and bH= 3.0 to 12.5.3.2.6 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 white PVC profilea profile the color of which isdefined by the color space falling within th
21、e parameters LH=83to 100, aH=4to0,andbH= 5.5 to +5.5.NOTE 5LH, aH, bHis determined in accordance with the Hunter LH,aH, bHopponent color space system in Test Method D 2244.4. Significance and Use4.1 The purpose of this specification is to establish arecognized standard of quality for rigid poly(viny
22、l chloride)(PVC) exterior weatherable profile extrusions for use inassembling windows and doors. The information contained inthis specification is intended to be helpful to producers,distributors, and users, and to promote understanding betweenbuyers and sellers. It is also intended to serve as the
23、basis forspecification requirements of exterior windows and doorswhich are made from rigid PVC profile extrusions in theirconstruction.NOTE 6Refer to Specification D 4099 for PVC prime window speci-fication.5. Materials and Manufacture5.1 The profile extrusions used for assembled windows anddoors sh
24、all be made principally of weatherable, rigid poly(vi-nyl chloride) (PVC) compound classified in accordance withthe properties described in Specification D 4216. Extrusionsshall meet one of the following cell classifications: Class1-10154-33, Class 1-20131-13, or Class 1-40131-13. (See theTable on C
25、lass Requirements for Rigid Poly(Vinyl Chloride)(PVC) and Related Plastic Compounds for Building Productsin Specification D 4216.)NOTE 7Non-PVC materials may be used as a capstock.5.2 Rigid PVC recycled plastic, as defined in Guide D 5033,may be used in this product if all the requirements in thesec
26、tions on Terminology (Section 3), Materials and Manufac-ture (Section 5), Physical Requirements (Section 6) and Per-formance Requirements (Section 7) are met by the extrusionscontaining PVC recycled plastic.5.3 The PVC compound in extruded section shall maintainuniform color and be free of any visua
27、l surface or structuralchanges, such as peeling, chipping, cracking, flaking, orpitting.5.4 Rework MaterialClean, homogeneous PVC reworkmaterial or rework material containing PVC capstock gener-ated from the manufacturers own production of the same classcompound may be used by the same manufacturer
28、providingthat the extruded profiles meet all the requirements of thisspecification. Clean principally PVC rework material contain-ing non-PVC capstock may be used only in the substrate of acapstocked product by the same manufacturer, providing thatthe extruded profiles meet all of the requirements o
29、f thisspecification.5.5 The PVC compound shall have a minimum impactresistance of 0.6 inlb/mil (2670 J/m) after weathering for 6months and 1 year in a hot, dry climate such as Phoenix, AZ;a hot, humid climate, such as Miami, FL; and a temperatenorthern climate.5.6 The PVC compound in extruded sectio
30、n shall maintainuniform color and be free of any surface or structural changes,such as peeling, chipping, cracking, flaking, or pitting afterweathering for 6 months and 1 year for white and for 6 months,1 year, and 2 years for all other colors in a hot, dry climate,such as Phoenix, AZ; a hot, humid
31、climate, such as Miami, FL;and a temperate northern climate.5.7 The PVC compound shall have successfully met theweathering requirements prescribed in 5.4 and 5.5 for 6 monthsat each climatic testing site prior to use in production ofexterior-profile extrusions for either market development orsales.N
32、OTE 8The 6-month-test requirement constitutes a screening processto eliminate catastrophic failure in the marketplace.6. Physical Requirements6.1 DimensionsThe size, thickness, and dimensional tol-erances of the exterior profiles shall be as agreed upon betweenthe supplier and the purchaser in the p
33、urchase order, or byestablished internal process control standards.6.2 Dimensional StabilityThe dimensional stability of theexterior-profile extrusions shall be determined in accordancewith 10.3. Extrusions over 0.040 in. (1.02 mm) shall have amaximum average shrinkage of 2.2 % for all sides measure
34、d,with no single value exceeding 2.4 %. Extrusions of 0.040 in.(1.02 mm) or less shall have a maximum average shrinkage of3%.6.3 Impact ResistanceFlat sections of the exterior profileextrusion shall have a minimum brittle impact failure of 1.0D 47262inlb/mil (4450 J/m) when tested in accordance with
35、 TestMethods D 4226, Procedure B, using impactor C.125. Refer to10.4.7. Performance Requirements7.1 Weathering:7.1.1 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 S, plywood-backed, in acco
36、rdance with Practice D 1435 and Practice G147.7.1.2 After 6-months and 1-year exposure times, the mini-mum mean impact for 20 measurements conducted on theexposed specimens shall be at least 0.6 inlb/mil (2670 J/m).Test impact in accordance with 10.4, A1.4, and A1.5.7.1.3 After each exposure time, t
37、he tested specimens shallmaintain a uniform color and be free of any visual surface orstructural changes such as peeling, chipping, cracking, flaking,and pitting when tested in accordance with Annex A1.NOTE 9It is recommended that manufacturers use the color-holdguidelines in Appendix X1 to ensure q
38、uality performance.7.1.4 Weatherability conformance 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. Th
39、e lengthy outdoorweatherability testing shall be performed concurrently withmarket development of new applications and sales of profilesto existing markets. Completion of weatherability testing priorto marketing of the product is not required. The profileextrusion producer shall immediately respond
40、in terms ofcompound change or extrusion technology change to unsatis-factory weatherability behavior of the profiles under test in anyclimatic test site at any stage of the weatherability testing.8. Workmanship, Finish, and Appearance8.1 The extrusions shall be acceptable between the buyerand the se
41、ller or meet internal process control standards insection, color, and finish. The extrusions shall be substantiallystraight and free from defects that might affect appearance orserviceability.9. Sampling9.1 Select samples in accordance with Practice D 1898. Thesamples shall be representative of the
42、compound used.10. Test Methods10.1 GeneralUse the inspection and test procedures con-tained in this section to determine the conformance of productsto the requirements of this specification. Each producer ordistributor who represents his products as conforming to thisspecification may use statistica
43、lly based sampling plans that areappropriate to each manufacturing process, but shall keep suchessential records as are necessary to document with a highdegree of assurance his claim that all of the requirements ofthis specification have been met. Additional sampling andtesting of the product, as ma
44、y be agreed upon between thesupplier and the purchaser, is not precluded by this section.10.2 Conditioning of SpecimensCondition the test speci-mens in accordance with Procedure A of Practice D 618. Forthe purpose of quality control testing, the minimum condition-ing time shall be 4 h.10.3 Dimension
45、al Stability:10.3.1 Determine the dimensional stability in accordancewith Test Method D 1042, except that one or more specimensshall be exposed to either of the following test cycles:10.3.1.1 30 min immersed in water maintained at 180 6 2(82 6 1C), or10.3.1.2 30 min conditioned in a forced-ventilati
46、on oven at180 6 2F (82 6 1C).10.3.2 Specimens shall condition for no less than1hinaccordance with Procedure A of Practice D 618, prior tomeasurement. Should a specimen fail, select and retest twoadditional specimens.10.4 Impact TestDetermine the impact strength in accor-dance with Test Methods D 422
47、6, Procedure B, using theC.125 impactor.11. Packing, Packaging, and Package Marking11.1 The exterior profile extrusions shall be packaged insuch a manner as to provide reasonable protection againstdamage in ordinary handling, transportation, and storage.11.2 Provisions of Practice D 3892 shall apply
48、 to thisspecification.11.3 Marking on each package of extruded profile extru-sions shall include the following:11.3.1 Manufacturers name or trademark;11.3.2 Identity of code number of extrusion profiles;11.3.3 Class of compound (Specification D 4216) used inprofiles;11.3.4 The designation ASTM D 472
49、6, affirming that theproduct so marked has been qualified to all the provisions ofthis specification, and11.3.5 The date and any other relevant information, such asfactory, machine, production shift, and so forth, either directlyor all or partly coded.12. Keywords12.1 color-hold guidelines; doors; exterior-profile extru-sions; poly(vinyl chloride) (PVC); recycled plastic; windowsTABLE 1 Required Exposures for PVC ExtrusionsColor of PVCExtrusionExposure ClimateRequired ExposureTimes, monthsAWhite hot, dry (Phoenix, AZ) 6 and 12hot, humid (Miam
