ASTM D7426-24 pdf download,Standard Test Method for Assignment of the DSC Procedure for Determining Tg of a Polymer or an Elastomeric Compound. 1.1 This testing procedure pertains to the determination of glass transition temperatures (Tg) of materials through the use of differential scanning calorimetry. 1.2 This method is suitable for amorphous materials, including thermosets and semi-crystalline substances with amorphous regions, provided they are stable and do not experience decomposition or sublimation within the glass transition range. 1.3 The standard operating temperature range for this method is from –120 to 500°C, although this range may be extended based on the specific...