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# Piping Materials - Temperature Expansion Coefficients

## Temperature expansion coefficients for materials used in pipes and tubes like aluminum, carbon steel, cast iron, PVC, HDPE and more.

Expansion coefficients that can be used to calculate temperature expansion of pipes and tubes - are indicated 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
• in/in oF = 1200 in/100ft oF = 1.8 m/m oC

Note! The higher expansion coefficients for plastic materials makes plastic pipes and tubes extremely sensitive to temperature changes. Always pay attention to plastic pipes and tubes when temperature varies.

### Example - Thermal Expansion of a PVC Pipe

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

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, materials and capacities, pressure drop calculations and charts, insulation and heat loss diagrams.
• Thermodynamics - Work, heat and energy systems.
• Temperature Expansion - Thermal expansion of pipes and tubes - stainless steel, carbon steel, copper, plastics and more.

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Temperature

oC
oF

Length

m
km
in
ft
yards
miles
naut miles

Area

m2
km2
in2
ft2
miles2
acres

Volume

m3
liters
in3
ft3
us gal

Weight

kgf
N
lbf

Velocity

m/s
km/h
ft/min
ft/s
mph
knots

Pressure

Pa (N/m2)
bar
mm H2O
kg/cm2
psi
inches H2O

Flow

m3/s
m3/h
US gpm
cfm

1 27