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PPE vs. PETG

Both PPE and PETG are thermoplastics. There are 19 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 2.3
2.2
Flexural Strength, MPa 75
77
Tensile Strength: Ultimate (UTS), MPa 55
53

Thermal Properties

Glass Transition Temperature, °C 85
81
Heat Deflection Temperature At 1.82 MPa (264 psi), °C 120
69
Melting Onset (Solidus), °C 260
140
Specific Heat Capacity, J/kg-K 1200
1200
Thermal Conductivity, W/m-K 0.22
0.29
Thermal Expansion, µm/m-K 90
68

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 MHz 2.7
2.4
Dielectric Strength (Breakdown Potential), kV/mm 19
16

Otherwise Unclassified Properties

Density, g/cm3 1.1
1.3
Water Absorption After 24 Hours, % 0.23
0.2

Common Calculations

Stiffness to Weight: Axial, points 1.2
1.0
Stiffness to Weight: Bending, points 42
34
Strength to Weight: Axial, points 14
12
Strength to Weight: Bending, points 30
25
Thermal Diffusivity, mm2/s 0.17
0.19
Thermal Shock Resistance, points 19
25