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PPSU vs. PETG

Both PPSU and PETG are thermoplastics. There are 24 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is PPSU and the bottom bar is PETG.

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 140
55
Elastic (Young's, Tensile) Modulus, GPa 3.6
2.2
Flexural Modulus, GPa 4.7
2.1
Flexural Strength, MPa 130
77
Impact Strength: Notched Izod, J/m 80
77
Rockwell R Hardness 130
120
Tensile Strength: Ultimate (UTS), MPa 95
53

Thermal Properties

Glass Transition Temperature, °C 220
81
Heat Deflection Temperature At 1.82 MPa (264 psi), °C 210
69
Heat Deflection Temperature At 455 kPa (66 psi), °C 220
73
Specific Heat Capacity, J/kg-K 970
1200
Thermal Conductivity, W/m-K 0.24
0.29
Thermal Expansion, µm/m-K 45
68

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 Hz 3.8
2.6
Dielectric Constant (Relative Permittivity) At 1 MHz 3.4
2.4
Dielectric Strength (Breakdown Potential), kV/mm 16
16

Otherwise Unclassified Properties

Density, g/cm3 1.4
1.3
Water Absorption After 24 Hours, % 0.44
0.2

Common Calculations

Stiffness to Weight: Axial, points 1.4
1.0
Stiffness to Weight: Bending, points 36
34
Strength to Weight: Axial, points 19
12
Strength to Weight: Bending, points 33
25
Thermal Diffusivity, mm2/s 0.17
0.19
Thermal Shock Resistance, points 42
25