Yes, the NG-HDT system supports ASTM D648, the standard test method for determining the heat deflection temperature (HDT) of plastics under flexural load. In this method, a specimen is placed under a specified stress, heated at a controlled rate, and the temperature at which it reaches a set deflection is recorded.

ASTM D648 is one of the most frequently applied standards in plastics, pipe manufacturing, and engineering design, since it provides a clear measure of how materials behave under mechanical stress at elevated temperatures. By working in line with ASTM D648, the NG-HDT allows laboratories and production facilities to qualify materials for high-temperature use, compare grades of thermoplastics, and validate performance for regulatory and customer specifications.

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