UL 746B PDF
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Polymeric Materials – Long Term Property Evaluations
1 Scope
1.1 These requirements cover long-term test procedures to be used for the evaluation of materials used for parts intended for specific applications in end products.
1.2 Together with the Standards mentioned in Supplementary Test Procedures, Section 3, these investigations provide data with respect to the physical, electrical, flammability, thermal, and other properties of the materials under consideration and are intended to provide guidance for the material manufacturer, the molder, the end-product manufacturer, safety engineers, and other interested parties.
SUMMARY OF TOPICS
This revision of ANSI/UL 746B dated May 9, 2024 includes changes to Table 7.1 to reflect the Inclusion of Requirement for Dynamic Mechanical Analysis (DMA) as an Alternate Method to Determine Glass-Transition Temperature of Polyphthalamide (PPA) Generic Material.





