ASTM D3418-99

1.1 This test method covers determination of transition temperatures of polymers (Note 1) by differential thermal analysis or differential scanning calorimetry.

Note 1-First-order transition temperatures or melting points of semicrystalline polymers may also be determined or approximated by the procedures found in Test Method D 2117 and Test Methods D 789.

1.2 This test method is applicable to polymers in granular form (below 60 mesh preferred, avoiding grinding if possible) or to any fabricated shape from which appropriate samples can be cut.

1.3 The normal operating temperature range is from the cryogenic region to 600°C. With special equipment, the temperature range can be extended.

1.4 The values stated in SI units are to be regarded as the standard.

1.5 This standard may involve hazardous materials, operations, and equipment. 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 and health practices and determine the applicability of regulatory limitations prior to use.

Note 2- To date, there is no similar or equivalent approved ISO standard.