Comparison
PETG FDM Filament vs PETG
A side-by-side comparison of Polyethylene Terephthalate Glycol-Modified Filament for FDM and Polyethylene Terephthalate Glycol.
Physical
Density
1.27 g/cm³
1.27 g/cm³
Water Absorption (24h)
0.3-0.6 %
0.13 %
Transparency
Transparent to Translucent
Transparent
Shrinkage
Low (0.3-0.6%)
0.2 – 0.5 %
Mechanical
Young's Modulus
2.0-2.5 GPa
2.1 GPa
Tensile Strength
50-60 MPa
50 MPa
Elongation at Break
6-15 %
120 %
Impact Strength (Izod)
6-10 kJ/m²
100 J/m
Flexural Strength
—
70 MPa
Thermal
Glass Transition Temperature
70-80 °C
80 °C
Melting Point
210-250 °C
—
Continuous Service Temperature
50-60 °C
65 °C
Heat Deflection Temperature
55-65 °C @ 0.45 MPa
70 °C
CTE
—
68 × 10⁻⁶ /K
Electrical
Dielectric Constant
3.0-3.2
3.3
Volume Resistivity
10¹³-10¹⁵ Ω·cm
10¹⁴ Ω·cm
Dielectric Strength
15-20 MV/m
—
Chemical resistance
Acids
Good resistance to dilute acids and bases
Good
Bases
Moderate resistance to dilute bases
Fair
Solvents
Resistant to oils, greases. Attacked by strong polar solvents.
—
UV Resistance
Good
Fair
Alcohols
—
Good
Oils
—
Good
Sustainability
Recyclability
Recyclable (PET stream)
Recyclable
Recycling Code
1 (PET)
1
Carbon Footprint
Moderate
~2.7 kg CO₂e / kg
Bio-based Content
—
0 %