Heat Distortion Temperature: One of CPVC’s Top Advantages

Durastream CPVC has many advantages over competitors’ materials. One of those Durastream CPVC advantages is its superior heat resistance.

Heat distortion temperature (HDT) is a critical metric because it indicates the temperature at which the material becomes soft enough to distort even a small mechanical load. If the temperature stays above HDT, permanent deformation occurs.

However, manufacturers generally use CPVC in hot environments because it has one of the highest HDTs among competitive plastics. The table below shows the HDT as compared to other plastics. Although the exact values differ due to grade and manufacturer, the general trend remains true: Durastream CPVC has one of the highest HDTs in the plastics industry.

References for HDT data:

  1. SEKISUI internal test data  2. The Chemical Society of Japan

HDT improves in correlation with the chlorine content in the CPVC compound. As you can see in the chart below, HDT increases as chlorine content increases. SEKISUI produces CPVC compounds that range in color, chlorine content and flexibility to meet the needs of building, home goods, transportation and specialty manufacturers. Durastream CPVC advantages are long-lasting and cost-effective, especially for these industries.

Please contact us today to learn more.