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ASTM E1877-21(2026)
Standard Practice for Calculating Thermal Endurance of Materials from Thermogravimetric Decomposition Data
1.1 This practice describes the determination of thermal endurance, thermal index, and relative thermal index for organic materials using the Arrhenius activation energy generated for thermal decomposition measured by thermogravimetry.
1.2 This practice is generally applicable to materials with a well-defined thermal decomposition profile upon heating, namely a smooth, continuous mass change.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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.
1.5 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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