PSU vs. PET

Both PSU and PET 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 PSU and the bottom bar is PET.

Polysulfone (PSU)Polyethylene Terephthalate (PET, PETE)

Metric UnitsUS Customary Units

Material Properties

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

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

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

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

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

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

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

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

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

PSU vs. PET

Material Properties

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