for water-piping systems in residential and commercial construction. CPVC maximal operating temperature peaks at 200 °F (93 °C). Mechanical properties The principal mechanical difference between CPVC and PVC is that CPVC is significantly more ductile, allowing greater flexure and crush resistance. Additionally, the mechanical strength of CPVC makes it a viable candidate to replace many types of metal pipe in conditions where metal's susceptibility to corrosion limits its use. {| class="wikitable" |+ Properties of CPVC and PVC |- ! rowspan=2 | ! colspan=2 | Schedule 40 ! colspan=2 | Schedule 80 |- ! CPVC ! PVC ! CPVC ! PVC |- ! Max. working pressure | | | | |- ! Tensile strength | | | | |- ! Temperature limits | | | | |} Additionally, CPVC is a thermoplastic and as such has greater insulation than that of copper pipes. Due to this increased insulation, CPVC experiences less condensation formation and better maintains water temperature for both hot and cold applications. Bonding Due to its specific composition, bonding CPVC requires a specialized solvent cement different from PVC, with high-strength formulas being first introduced in 1965 by Genova Products, followed by alternatives such as IPS's Weld-On line. Primers, solvent cements, and bonding agents for CPVC reportedly must meet ASTM F493 specifications, differing from PVC solvent cements that must adhere to ASTM D2564 standards. Fire properties CPVC is similar to PVC in resistance to fire. It is typically very difficult to ignite and tends to self-extinguish when not in a directly applied flame. Due to its chlorine content, the incineration of CPVC, either in a fire or in an industrial disposal process, can result in the creation of chlorinated dioxins and the similarly dangerous polychlorinated dibenzofurans, both which bioaccumulate. References External links PVC4Pipes (Global PVC Pipe trade association) Vinyl polymers Plastics