Temperature Expansion Coefficients of some common Piping Materials

Expansion coefficients of some common materials used for pipes and tubes - aluminum, carbon steel, cast iron, PVC, HDPE and more

Expansion coefficients of some common materials used for calculating pipe temperature expansion of pipes and tubes can be found in the table below:

MaterialExpansion Coefficients
10-6 in/in oF 10-6 m/m oC
Aluminum 12.8 23.1
Carbon Steel 6.5 11.7
Cast Iron 5.9 10.6
Copper 9.3 16.8
Stainless Steel 9.9 17.8
ABS Acrylonitrile butadiene styrene 35.0 63.0
HDPE High density polyethylene 67.0 120.0
PE Polyethylene 83.0 150.0
CPVC Chlorinated polyvinyl chloride 44.0 79.0
PVC Polyvinyl chloride 28.0 50.4

Note! The high expansion coefficients for the plastic materials makes plastic piping and tubes extreme sensitive to change in temperature. Always pay attention to plastics were temperature varies.

pipes linear temperature expansion

Example - Thermal Expansion of a PVC Pipe

A PVC pipe with length 6 m is heated from 0oC to 60oC.

The expansion of the pipe can be calculated as

dl = (50.4 10-6 m/m oC) (6 m) ((60oC) - (0oC))

   = 0.018 m

   = 1.8 cm

Related Topics

  • Piping Systems - Dimensions of pipes and tubes - dimensions, materials, capacities - pressure drop calculations and charts - insulation and heat loss diagrams
  • Thermodynamics - The effects of work, heat and energy on a system

Related Documents

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