规定了在规定的高温条件下进行试验时，测定热固性模塑材料的机械、电气、热和其他性能的方法。该方法用于测定相对性能温度（RPT）。结合聚合物材料的长期性能评估，RPT为设计师和工程师提供了在高温下使用的材料的预期性能的更完整的图片。

Specifies a method for the determination of the mechanical, electrical, thermal and other properties of thermosetting moulding materials when tested under defined conditions at elevated temperatures. The method is used for the determination of the relative performance temperature (RPT). Coupled with the long-term property evaluations of polymeric materials, the RPT provides designers and engineers with a more complete picture of the expected performance of materials in use at elevated temperatures.