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ASTM D4726-2018 pdf free download

ASTM D4726-2018 pdf free download.Standard Specification for Rigid Poly(Vinyl Chloride) (PVC) Exterior-Profile Extrusions Used for Assembled Windows and Doors
1. Scope
1.1 This specification establishes requirements for the ma- terial properties, including dimensional stability, weatherability, and extrusion quality, of rigid poly(vinyl chlo- ride) (PVC) exterior profile extrusions used for assembled windows and doors. Methods for testing and for identifying exterior profile extrusions that comply with this specification are also provided. 1.2 The use of rigid PVC recycled plastic in this product shall be in accordance with the requirements in Section 6. N OTE 1—Information with regard to application, assembly, and instal- lation should be obtained from the manufacturers ofthe profiles and ofthe windows and doors. N OTE 2—Refer to Specification D3678 for interior profile extrusions. 1.3 Color-hold guidelines are provided in an appendix for the manufacturer’s 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. X1.1 through X1.5). Additional colors will be added as color guidelines are developed. 1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are for informa- tion only. N OTE 3—There is no known ISO equivalent to this standard. 1.6 The text of this standard references notes and footnotes, which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of this standard. 1.7 The following safety hazards caveat pertains only to the test methods portion, Section 11, of this specification: This standard does not purport to address all ofthe safety concerns, ifany, associated with its use. It is the responsibility ofthe user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.8 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
6. Materials and Manufacture
6.1 The profile extrusions used for assembled windows and doors shall be made principally of weatherable, rigid poly(vi- nyl chloride) (PVC) compounds meeting or exceeding the requirements of Class 1-20131-13 as defined in Specification D4216. N OTE 5—Non-PVC materials may be used as a capstock. 6.2 Rigid PVC recycled plastic is acceptable for use in this product if all the requirements in the sections on Terminology (Section 3), Materials and Manufacture (Section 6), Physical Requirements (Section 7), and Performance Requirements (Section 8) are met by the extrusions containing PVC recycled plastic. 6.3 The PVC compound in the extruded section shall have visual uniform color and be free of any visual surface or structural changes, such as peeling, chipping, cracking, flaking, or pitting. 6.4 Rework Material—Clean, homogeneous PVC rework material or rework material containing PVC capstock gener- ated from the manufacturer’s own production ofthe same class compound is acceptable for use by the same manufacturer providing that the extruded profiles meet all the requirements of this specification. Clean principally PVC rework material containing non-PVC capstock is acceptable for use in the substrate of a capstocked product by the same manufacturer, providing that the extruded profiles meet all of the require- ments of this specification. 6.5 The PVC compound shall have successfully met the weathering requirements for six months at each climatic testing site prescribed in A1.1.1 prior to use in production of exterior- profile extrusions for either market development or sales. N OTE 6—The six-month-test requirement constitutes a screening pro- cess to eliminate catastrophic failure in the marketplace.

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