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Standard Test Method for Microcellular Urethanes´High-Temperature Sag
Name übersetzen
NORM herausgegeben am 1.7.2020
Bezeichnung normen: ASTM D3769-20
Ausgabedatum normen: 1.7.2020
SKU: NS-999963
Zahl der Seiten: 3
Gewicht ca.: 9 g (0.02 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
Keywords:
deformation, heat sag, high-temperature, microcellular, sag, urethane,, ICS Number Code 83.100 (Cellular materials)
Significance and Use | ||||||
4.1 This test method is used to indicate the potential tendency of microcellular materials to deform during paint application in an assembly plant operation. Since a standard specimen is used, do not assume heat sag measurements to be exactly those which will occur on a part during or after the paint application and baking operation of an assembly process. 4.2 Before proceeding with this test method, reference shall be made to the specification of the material being tested. Any test specimen preparation, conditioning, or dimensions, or combination thereof, and testing parameters covered in the materials specification shall take precedence over those mentioned in these test methods. If there are no material specifications, then the default conditions apply. Note 2: This test method is applicable to solid
urethanes.
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1. Scope | ||||||
1.1 This test method covers the procedure and apparatus for measuring high-temperature sag of microcellular urethane materials. 1.2 The values stated in SI units are to be regarded as standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Note 1: There is no known ISO equivalent to this
standard.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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2. Referenced Documents | ||||||
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