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Plastic Pipes - Maximum Operating Temperatures

Piping materials like ABS, PE, PVC, CPVC, PB, PP and SR and pressure and operating temperature limits.

Plastic Pipes Operating Temperatures

Typical maximum operating temperatures for common plastic pipe materials are indicated below. Note that working pressure varies with type of material and schedule (wall thickness).

Plastic Pipes - Maximum Operating Temperatures
Plastic Pipe MaterialOperating Temperature
With PressureWithout Pressure
(oF)(oC)(oF)oC)
ABS - Acrylonitrilebutadiene Styrene 100 38 180 82
PE - Polyethylene 100 38 180 82
PVC - Polyvinylchloride 100 38 140 60
CPVC - Chlorinated Polyvinyl Chloride 180 82 180 82
PB - Polybutylene 180 82 200 93
PP - Polypropylene 100 38 180 82
SR - Styrene Rubber Plastic 150 66

Maximum Short Time Operating Temperature

- for pipes without pressure.

  • PVC : 95 oC
  • PP : 100 oC
  • PE : 95 o

Heat Distortion Temperature

- is the temperature where a test piece of a material placed in a heat medium with a bending load (18.6 kg/cm2) applied - reaches a specified deflection.

  • ABS: 104 - 106 oC
  • PVC: 54 - 80 oC
  • HDPE: 43 - 49 oC
  • LDPE: 32 - 41 oC
  • PP: 57 - 64 oC

Vicat Softening Temperature

- is the temperature where a needle shaped penetrator sinks into a test piece a specified depth when a specified vertical load (1 kg) is applied.

  • ABS: 102.3 oC
  • PVC: 92 oC
  • PE: 127.3 oC
  • PP: 152.2 oC

Plastic Pipes Temperature Derating Diagram

Thermoplastic pipes - temperature and strength and stiffnes diagram

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