PET vs. PSU

Both PET and PSU are thermoplastics. There are 9 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is PET and the bottom bar is PSU.

Polyethylene Terephthalate (PET, PETE)Polysulfone (PSU)

Metric UnitsUS Customary Units

Material Properties

Density, g/cm³		1.4 to 1.6
Density, g/cm³		1.2 to 1.6

Elongation at Break, %		2.5 to 70
Elongation at Break, %		2.0 to 52

Flexural Modulus, GPa		8.3 to 14
Flexural Modulus, GPa		2.7 to 14

Impact Strength: Notched Izod, J/m		43 to 85
Impact Strength: Notched Izod, J/m		59 to 100

Specific Heat Capacity, J/kg-K		1000 to 1150
Specific Heat Capacity, J/kg-K		910 to 1000

Strength to Weight: Axial, points		12 to 27
Strength to Weight: Axial, points		16 to 25

Strength to Weight: Bending, points		25 to 41
Strength to Weight: Bending, points		30 to 40

Tensile Strength: Ultimate (UTS), MPa		60 to 140
Tensile Strength: Ultimate (UTS), MPa		70 to 140

Water Absorption At Saturation, %		0.24 to 0.5
Water Absorption At Saturation, %		0.4 to 0.6

PET vs. PSU

Material Properties

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