1、Designation: D 4726 09An 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 () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification establishes requirements for the ma
3、-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 are
4、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 Specifi
5、cation 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). Ad
6、ditional colors will be added as colorguidelines are developed.1.5 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.NOTE 3There are no ISO
7、 standards covering the primary subjectmatter of this specification.1.6 The text of this 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 followi
8、ng safety hazards caveat pertains only to thetest methods portion, Section 10, of this 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 healthpr
9、actices and determine the applicability of regulatory limita-tions prior to use.2. Referenced Documents2.1 ASTM Standards:2D 618 Practice for Conditioning Plastics for TestingD 883 Terminology Relating to PlasticsD 1042 Test Method for Linear Dimensional Changes ofPlastics Under Accelerated Service
10、ConditionsD 1435 Practice for Outdoor Weathering of PlasticsD 1600 Terminology for Abbreviated Terms Relating toPlasticsD 1898 Practice for Sampling of Plastics3D 2244 Practice for Calculation of Color Tolerances andColor Differences from Instrumentally Measured ColorCoordinatesD 3678 Specification
11、for Rigid Poly(Vinyl Chloride) (PVC)Interior-Profile ExtrusionsD 3892 Practice for Packaging/Packing of PlasticsD 4099 Specification for Poly(Vinyl Choride)(PVC) PrimeWindows and Sliding Glass Doors3D 4216 Specification for Rigid Poly(Vinyl Chloride) (PVC)and Related PVC and Chlorinated Poly(Vinyl C
12、hloride)(CPVC) Building Products CompoundsD 4226 Test Methods for Impact Resistance of Rigid Poly-(Vinyl Chloride) (PVC) Building ProductsD 5033 Guide for Development of ASTM Standards Relat-ing to Recycling and Use of Recycled Plastics3E 631 Terminology of Building ConstructionsE 805 Practice for I
13、dentification of Instrumental Methods ofColor or Color-Difference Measurement of MaterialsG 147 Practice for Conditioning and Handling of Nonme-tallic Materials for Natural and Artificial Weathering Tests1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct
14、 responsibility of Subcommittee D20.24 on Plastic BuildingProducts.Current edition approved March 1, 2009. Published April 2009. Originallyapproved in 1987. Last previous edition approved in 2002 as D 4726 02.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Custom
15、er Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Withdrawn. The last approved version of this historical standard is referencedon www.astm.org.1*A Summary of Changes section appears at the end of this
16、 standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3. Terminology3.1 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 Stan
17、dard: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 4.0, and bH= 6.5 to 23.3.2.2 color-hold guidelinespredictive target color regionswithin a three-dimensional model which constitute acceptableappearance retentio
18、n levels of color change resulting fromweathering of a specific product type and color.NOTE 4Commercial products which demonstrate weathering behav-ior within reasonable conformance to these target guidelines during a2-year test period can be anticipated to weather without exhibitingunacceptable col
19、or 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= 1.0 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=3t
20、o4,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=30to60,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
21、 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 the 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
22、Method D 2244.4. Significance and Use4.1 The purpose of this specification is to establish arecognized standard of quality for rigid poly(vinyl chloride)(PVC) exterior weatherable profile extrusions for use inassembling windows and doors. The information contained inthis specification is intended to
23、 be helpful to producers,distributors, and users, and to promote understanding betweenbuyers and sellers. It is also intended to serve as the basis forspecification requirements of exterior windows and doorswhich are made from rigid PVC profile extrusions in theirconstruction.NOTE 6Refer to Specific
24、ation D 4099 for PVC prime window speci-fication.5. Materials and Manufacture5.1 The profile extrusions used for assembled windows anddoors shall be made principally of weatherable, rigid poly(vi-nyl chloride) (PVC) compounds meeting or exceeding therequirements of Class 1-20131-13 as defined in Spe
25、cificationD 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 thesections on Terminology (Section 3), Materials and Manufac-ture (Section 5), Physical Requirements (Section 6) and P
26、er-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 visual surface or structuralchanges, such as peeling, chipping, cracking, flaking, orpitting.5.4 Rework MaterialClean,
27、 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 providingthat the extruded profiles meet all the requirements of thisspecification. Clean principally PVC rework
28、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 of thisspecification.5.5 The PVC compound shall have a minimum impactresistance of 0.6 inlb/mil (2670 J/m) after w
29、eathering 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 section shall maintainuniform color and be free of any surface or structural changes,such as peeling, chipping, crackin
30、g, 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 climate, such as Miami, FL;and a temperate northern climate.5.7 The PVC compound shall have successfully met thewe
31、athering 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.NOTE 8The 6-month-test requirement constitutes a screening processto eliminate catastrophic failure in the marketpl
32、ace.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 purchase order, or byestablished internal process control standards.6.2 Dimensional StabilityThe dimensional stabil
33、ity 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 measured,with no single value exceeding 2.4 %. Extrusions of 0.040 in.(1.02 mm) or less shall have a maximum average shri
34、nkage of3%.6.3 Impact ResistanceFlat sections of the exterior profileextrusion shall have a minimum brittle impact failure of 1.0inlb/mil (4450 J/m) when tested in accordance with TestMethods D 4226, Procedure B, using impactor C.125. Refer to10.4.7. Performance Requirements7.1 Weathering:D47260927.
35、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 accordance with Practice D 1435 and PracticeG 147.7.1.2 After 6-months and 1-year exposure times, the mini-mum mean i
36、mpact 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, the tested specimens shallmaintain a uniform color and be free of any visual surface orstructural changes such as
37、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 quality performance.7.1.4 Weatherability conformance testing requirements areto reflect performance of a “typical”
38、 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 lengthy outdoorweatherability testing shall be performed concurrently withmarket development of new application
39、s and sales of profilesto existing markets. Completion of weatherability testing priorto marketing of the product is not required. The profileextrusion producer shall immediately respond in terms ofcompound change or extrusion technology change to unsatis-factory weatherability behavior of the profi
40、les 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 seller or meet internal process control standards insection, color, and finish. The extrusions shall be substantial
41、lystraight 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 compound used.10. Test Methods10.1 GeneralUse the inspection and test procedures con-tained in this section to de
42、termine the conformance of productsto the requirements of this specification. Each producer ordistributor who represents his products as conforming to thisspecification may use statistically based sampling plans that areappropriate to each manufacturing process, but shall keep suchessential records
43、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 may be agreed upon between thesupplier and the purchaser, is not precluded by this section.10.2 Conditioning of Spe
44、cimensCondition 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 Dimensional Stability:10.3.1 Determine the dimensional stability in accordancewith Test Method D 1042, except that one or
45、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-ventilation oven at180 6 2F (82 6 1C).10.3.2 Specimens shall condition for no less than 1 h inaccordance with Procedure A
46、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 4226, Procedure B, using theC.125 impactor.11. Packing, Packaging, and Package Marking11.1 The exterior profile e
47、xtrusions 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 to thisspecification.11.3 Marking on each package of extruded profile extru-sions shall include the following
48、: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 4726, affirming that theproduct so marked has been qualified to all the provisions ofthis specification, and11.3.
49、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 (Miami, FL) 6 and 12northern temperate 6 and 12Any other color hot, dry (Phoenix, AZ) 6, 12, and 24hot, humid (Mi
