Comparison
GF-PA Filament vs PETG
A side-by-side comparison of Glass Fiber Reinforced Polyamide Filament for FDM and Polyethylene Terephthalate Glycol.
Physical
Density
1.20-1.30 g/cm³
1.27 g/cm³
Water Absorption (24h)
0.4-0.9 %
0.13 %
Transparency
Opaque
Transparent
Shrinkage
Low (0.4-0.7%)
0.2 – 0.5 %
Mechanical
Young's Modulus
6-9 GPa
2.1 GPa
Tensile Strength
65-80 MPa
50 MPa
Elongation at Break
8-15 %
120 %
Impact Strength (Izod)
5-9 kJ/m²
100 J/m
Flexural Strength
—
70 MPa
Thermal
Glass Transition Temperature
50-60 °C
80 °C
Melting Point
175-185 °C
—
Continuous Service Temperature
80-90 °C
65 °C
Heat Deflection Temperature
60-70 °C @ 0.45 MPa
70 °C
CTE
—
68 × 10⁻⁶ /K
Electrical
Dielectric Constant
3.5-4.0
3.3
Volume Resistivity
10¹⁰-10¹² Ω·cm
10¹⁴ Ω·cm
Dielectric Strength
12-18 MV/m
—
Chemical resistance
Acids
Good resistance
Good
Bases
Good resistance
Fair
Solvents
Resistant to oils, greases. Attacked by strong acids.
—
UV Resistance
Moderate
Fair
Alcohols
—
Good
Oils
—
Good
Sustainability
Recyclability
Limited (composite)
Recyclable
Recycling Code
7 (Other)
1
Carbon Footprint
High
~2.7 kg CO₂e / kg
Bio-based Content
—
0 %