ASTM D 7138 : 2016
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Standard Test Method to Determine Melting Temperature of Synthetic Fibers (Withdrawn 2025)
English
01-01-2016
07-11-2025
1.1 Either of two test methods are used to determine the melting temperature of thermoplastic fibers, yarns, or threads.
| Committee |
D 13
|
| DocumentType |
Test Method
|
| Pages |
5
|
| PublisherName |
American Society for Testing and Materials
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
1.1Either of two test methods are used to determine the melting temperature of thermoplastic fibers, yarns, or threads.
1.2Method 1 can be used to determine melting temperatures for blends of multiple fiber material types. Method 2 can only be used to determine the melting temperature of a single fiber material type.
1.2.1Method 1, Differential Scanning Calorimetry (DSC), measures changes in heat capacity and will detect the glass transition, the crystalline melting and endothermic thermal degradation.
1.2.2Method 2, a visual determination of melting, determines any change that visually appears as a transition from a solid to a liquid state.
1.2.3Due to the differences in what each test method measures, the results from Method 1 and Method 2 cannot be compared.
1.3The values stated in either SI units or other units are to be regarded separately. The values stated in each system are not exact equivalents; therefore, each system shall be used independently without combining values.
1.4This 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.
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