Chlorinated polyvinyl chloride (CPVC) has become an important engineering thermoplastic due to its relatively low cost, high heat deflection temperature, chemical inertness and outstanding mechanical, dielectric, and flame and smoke properties. First commercialized in 1959 by Lubrizol Advanced Materials, Inc. (formerly BFGoodrich Performance Materials), it has proven over nearly five decades of use to be a viable piping alternative for a variety of industrial applications in which a high use temperature and excellent resistance to corrosive chemicals are required.
The purpose of this document is to present a more detailed analysis of the chemical resistance capabilities of CPVC. It will provide specifiers and installers with information about those applications in which CPVC performs the best, as well as those in which its use may be limited or not recommended at all.
Variables that can affect chemical resistance include chemical concentration, temperature, pressure, external stress and final product quality. Since the number of possible use conditions is so large, the final decision regarding material suitability often must be based on in-service testing and direct communications with the piping manufacturer. This paper addresses capabilities and limitations that will provide general guidelines for an end-use application.
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