Comparison
TPU 85A Filament vs PETG
A side-by-side comparison of Thermoplastic Polyurethane 85A Filament and Polyethylene Terephthalate Glycol.
Physical
Density
1.18-1.23 g/cm³
1.27 g/cm³
Water Absorption (24h)
0.6-1.1 %
0.13 %
Transparency
Translucent to Opaque
Transparent
Shrinkage
Very Low (0.0-0.3%)
0.2 – 0.5 %
Mechanical
Young's Modulus
0.02-0.1 GPa (at low strain)
2.1 GPa
Tensile Strength
30-40 MPa
50 MPa
Elongation at Break
400-600 %
120 %
Impact Strength (Izod)
High (Not typically measured in standard Izod due to deformation)
100 J/m
Flexural Strength
—
70 MPa
Thermal
Glass Transition Temperature
-45 to -25 °C
80 °C
Melting Point
N/A (thermoplastic, softens)
—
Continuous Service Temperature
50-70 °C
65 °C
Heat Deflection Temperature
N/A (deforms)
70 °C
CTE
—
68 × 10⁻⁶ /K
Electrical
Dielectric Constant
4.2-4.7
3.3
Volume Resistivity
10⁹-10¹¹ Ω·cm
10¹⁴ Ω·cm
Dielectric Strength
8-13 MV/m
—
Chemical resistance
Acids
Good resistance
Good
Bases
Good resistance
Fair
Solvents
Resistant to oils and greases. Attacked by strong polar solvents.
—
UV Resistance
Good
Fair
Alcohols
—
Good
Oils
—
Good
Sustainability
Recyclability
Mechanically Recyclable (limited)
Recyclable
Recycling Code
7 (Other)
1
Carbon Footprint
Moderate
~2.7 kg CO₂e / kg
Bio-based Content
—
0 %