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ETFE vs. PETG

Both ETFE and PETG are thermoplastics. There are 20 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 ETFE and the bottom bar is PETG.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 1.5
2.2
Flexural Modulus, GPa 1.2
2.1
Tensile Strength: Ultimate (UTS), MPa 46
53

Thermal Properties

Heat Deflection Temperature At 1.82 MPa (264 psi), °C 50
69
Heat Deflection Temperature At 455 kPa (66 psi), °C 80
73
Melting Onset (Solidus), °C 260
140
Specific Heat Capacity, J/kg-K 1000
1200
Thermal Conductivity, W/m-K 0.24
0.29
Thermal Expansion, µm/m-K 95
68

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 Hz 2.1
2.6
Dielectric Constant (Relative Permittivity) At 1 MHz 2.6
2.4
Dielectric Strength (Breakdown Potential), kV/mm 16
16

Otherwise Unclassified Properties

Density, g/cm3 1.8
1.3
Water Absorption After 24 Hours, % 0.010
0.2

Common Calculations

Stiffness to Weight: Axial, points 0.48
1.0
Stiffness to Weight: Bending, points 22
34
Strength to Weight: Axial, points 7.3
12
Strength to Weight: Bending, points 16
25
Thermal Diffusivity, mm2/s 0.14
0.19
Thermal Shock Resistance, points 23
25