Comparison
Lightweight Flexible Polyamide Elastomer (Pebax) vs PETG
A side-by-side comparison of Polyamide Elastomer (TPA - Pebax® family) and Polyethylene Terephthalate Glycol.
Physical
Density
0.98 - 1.05 g/cm³
1.27 g/cm³
Water Absorption (24h)
0.5 - 1.5 %
0.13 %
Transparency
Opaque to Translucent
Transparent
Shrinkage
0.5 - 1.5 %
0.2 – 0.5 %
Mechanical
Young's Modulus
0.005 - 0.05 GPa
2.1 GPa
Tensile Strength
20 - 50 MPa
50 MPa
Elongation at Break
400 - 800 %
120 %
Impact Strength (Izod)
Good (especially notched)
100 J/m
Flexural Strength
—
70 MPa
Thermal
Glass Transition Temperature
-50 to -20 °C
80 °C
Melting Point
100 - 180 °C
—
Continuous Service Temperature
-40 to 90 °C
65 °C
Heat Deflection Temperature
30 - 60 °C
70 °C
CTE
—
68 × 10⁻⁶ /K
Electrical
Dielectric Constant
3.0 - 4.0
3.3
Volume Resistivity
10^12 - 10^14 Ohm-cm
10¹⁴ Ω·cm
Dielectric Strength
15 - 25 kV/mm
—
Chemical resistance
Acids
Good
Good
Bases
Good
Fair
Solvents
Good resistance to oils, greases; swells in strong polar solvents
—
UV Resistance
Good
Fair
Alcohols
—
Good
Oils
—
Good
Sustainability
Recyclability
Recyclable (thermoplastic)
Recyclable
Recycling Code
7 (Other)
1
Carbon Footprint
Moderate to High
~2.7 kg CO₂e / kg
Bio-based Content
—
0 %