Thermoplastic materials loose strength to pressure and tension with increasing temperature. The table below can be used as a guide to common thermoplastics and their derated strength with temperature. Manufacturing data should always be consulted.
1) The thermoplastic is not resistant for long term service at this temperature. Operating conditions should be avoided.
- PVDF - PolyVinylidene Fluoride
- CPVC - Chlorinated Polyvinyl Chloride
- PVC - Polyvinyl Chloride
- PB - Polybutylene
- PEX - Cross Linked Polyethylene
- PE - Polyethylene
Plastic Pipes Temperature Derating Diagram
Example - Higher Temperature and Reduced Strength
If the operating pressure for a 6" Schedule 80 CPVC pipe is 167 psi, the maximum operating pressure at 150 oF (66 oC) is reduced to
(167 psi) 0.5
= 83.5 psi
Material properties of gases, fluids and solids - densities, specific heats, viscosities and more.
Pressure ratings of pipes and tubes and their fittings - carbon steel , stainless steel, plastic, copper and more.
Dimensions of thermoplastic pressure pipes.
Dimensions of PSM PVC sewer pipe.
Dimensions of PE pipes based on controlled outside diameter.
Dimensions of PEX tubes.
Dimensions of thermoplastic pipes - PEX and PB according BS 7291.
CTS (Copper Tube Sized) CPVC (Chlorinated Poly Vinyl Chloride) tubes temperature and pressure ratings.
Dimensions of PVC pipes according EN 1329.
Dimensions of PVC pipes according EN 1401.
Dimensions of PVC pipes with structured walls according EN 1453.
Dimensions of plastic pipes according ISO 11922 - metric and imperial units.
Dimmensions of PE pipes for gaseous supply according ISO 4437.
Water pressure ratings for schedule 40 and schedule 80 Polyethylene plastic pipes
Polyethylene pipe temperature and maximum operating pressure.
Piping materials like ABS, PE, PVC, CPVC, PB, PP and SR and pressure and operating temperature limits.
Symbol codes and labeling used for recycling plastic products like bottles, containers and packagin.
Maximum operating and required burst pressure of PVC - Polyvinyl Chloride - pipe fittings.
Temperature derating factor for steel pipes.