ASTM D1204-14 (2020) pdf free

04-06-2021 comment

ASTM D1204-14 (2020) pdf free.Standard Test Method for Linear Dimensional Changes of Nonrigid Thermoplastic Sheeting or Film at Elevated Temperature.
1.1 This test method covers the measurement of changes in linear dimensions of nonrigid thermoplastic sheeting or film that result from exposure of the material to specified conditions of elevated temperature and time.
1.2 The values stated in Si units are to be regarded as the standard.
1.3 This siandard does not purport to address all of the saferT concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safet health, and environmental practices and determine the applicability of regulatory limitations prior to use.
NOTE 1—This test method and ISO 11501 address the same matter, but differ in technical content (and results cannot be directly compared between the two methods).
1.4 This inteniational standard was developed in accordance with inernationallv recognized principles on standardi atioiz established in the Decision on Principles for the Development of Internatioizal Standards, Guides and Recoin – mendcirions issued by the World Trade Organ ization Technical Barrie,c to Trade (TBT) Cominirtee.
2. Terminology
2. 1 Dcfinüions—Terrns applicable to this test method are defined in Terminology D883.
3. Significance and Use
3.1 This test method is particularly applicable to nonrigid thermoplastic sheeting or film made by the calender or extrusion process. The test gives an indication of lot-to-lot uniformity in regards to the degree of internal strains introduced during processing.
3.2 The heating medium in this test method is air and does not necessarily yield the same results as Test Method D2732. which uses a liquid medium.
3.3 Before proceeding with this test method, review the specifications of the material being tested, if available. Any test specimen preparation, conditioning. dimensions, or testing parameters. or combination thereof, covered in the relevant ASTM material specification shall take precedence over those mentioned in this test method. If there are no relevant ASTM material specifications, then the default conditions apply. Table I of Classification System D4000 lists the ASTM material standards that currently exist.ASTM D1204 free download.

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