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# Thermoplastics - Physical Properties

## Physical properties of thermoplastics like ABS, PVC, CPVC, PE, PEX, PB and PVDF.

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Typical properties of some common thermoplastics:

For full table with Thermal Conductivity, Specific Heat and Maximum Temperature Limit - rotate the screen!

ThermoplasticSpecific Gravity
- SG -
Tensile Yield Strength
- σy -
(103 psi)

Load Calculator!
Tensile Modulus
- E -
(103 psi)

Load Calculator!
Coefficient of
Linear Expansion

- α -
(10-6 in/in oF)
Thermal Conductivity
- k -
(Btu in /ft2 h oF)
Specific Heat
- c -
(Btu/lb oF)
Maximum Temperature Limit
(oF/oC)
ABS 1.08 7.0 340 60 1.35 0.34 180/80
PVC 1.4 8.0 410 30 1.1 0.25 150/65
CPVC 1.54 8.0 420 35 1.0 0.20 210/100
PE 0.95 3.2 120 90 3.2 0.55 160/70
PEX 0.94 2.8 . 90 3.2 0.55 210/100
PB 0.92 4.2 55 72 1.5 0.45 210/100
PVDF 1.76 7.0 220 70 1.5 0.29 300/150
• 1 psi (lb/in2) = 6,894.8 Pa (N/m2)
• 1 (Btu/lb oF) = 4,186.8 (J/kg K) = 1 (kcal/kg oC)
• 1 in/(in oF) = 1.8 m/(m oC)
• 1 Btu/(lbm oF) = 4186.8 J/ (kg K) = 1 kcal/(kg oC)
• 1 GPa = 109 Pa
• 1 MPa = 106 Pa

### Tensile Yield Strength - σy

Tensile yield strength is the maximum engineering stress in psi (or Pa) at which a permanent non-elastic deformation of the thermoplastic material begins.

### Yield Point

Yield point is the first point where the specimen yields, where the specimen's cross-sectional area begins to contract significantly, or where the strain can increase without increase in the stress.

### Ultimate Tensile Strength - σu

Ultimate tensile strength is the maximum stress the thermoplastic material can withstand before failing, whichever occurs at the higher stress level.

Total elongation at failure of some polymers:

PolymerElongation
ABS 5 - 20
Acrylic 2 - 7
Epoxy 4 - 5
HDPE 700 - 1000
Polyamid (Nylon) 6 30 - 100
Polyamid (Nylon) 6/6 15 - 300
Phenolic 0.4 - 0.8
Polyacetal 25
Polycarbonate 110
Polyester 300
Polypropylene 100 - 600
PTFE 250 - 350

### Tensile Modulus - or Young's Modulus - E

Tensile modulus or Young's Modulus is the ratio of stress to strain within the elastic region of the stress-strain curve before the yield point.

### Thermoplastic Characteristics

#### ABS - Acrylonitrile Butadiene Styrene

• strong and rigid
• resistant to a variety of bases and acids
• some solvents and chlorinated hydrocarbons may damage the material
• maximum usable temperature 160oF (71oC)
• common as DEV - Drainage, Waste and Vent - pipes

#### PB - Polybutylene

• flexible pipe
• used for pressurized water systems
• usable for hot and cold water
• only compression and banded type joints used

#### PE - Polyethylene

• flexible pipe
• used for pressurized water systems - sprinkler..
• not usable for hot water

#### PEX - Polyethylene Cross Linked

• flexible pipe
• used for pressurized water systems - sprinkler..

#### PP - Polypropylene

• lightweight
• temperature up to 180oF (82oC)
• highly resistant to acids, bases and many solvents
• usable in laboratory plumbing

#### PVC - Polyvinyl Chloride

• strong and rigid
• resistant to a variety of acids and bases
• may be damaged by some solvents and chlorinated hydrocarbons
• maximum usable temperature 140oF (60oC)
• usable for water, gas and drainage systems
• not usable in hot water systems

#### CPVC - Chlorinated Polyvinyl Chloride

• similar to PVC - but designed for water up to 180oF (82oC)

#### PVDF - Polyvinylidene Fluoride

• strong and very tough material
• resistant to abrasion, acids, bases, solvents and much more
• usable to 280oF (138oC)
• usable in laboratory plumbing
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## Related Topics

• Temperature Expansion - Thermal expansion of pipes and tubes - stainless steel, carbon steel, copper, plastics and more.
• Material Properties - Material properties of gases, fluids and solids - densities, specific heats, viscosities and more.

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## Unit Converters

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

3 30

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