Comparison
GF-PA Filament vs PLA
A side-by-side comparison of Glass Fiber Reinforced Polyamide Filament for FDM and Polylactic Acid.
Physical
Density
1.20-1.30 g/cm³
1.24 g/cm³
Water Absorption (24h)
0.4-0.9 %
0.5 %
Transparency
Opaque
Semi-transparent
Shrinkage
Low (0.4-0.7%)
0.3 – 0.5 %
Mechanical
Young's Modulus
6-9 GPa
3.5 GPa
Tensile Strength
65-80 MPa
50 – 65 MPa
Elongation at Break
8-15 %
6 %
Impact Strength (Izod)
5-9 kJ/m²
16 J/m
Flexural Strength
—
80 MPa
Thermal
Glass Transition Temperature
50-60 °C
60 °C
Melting Point
175-185 °C
150 – 160 °C
Continuous Service Temperature
80-90 °C
45 °C
Heat Deflection Temperature
60-70 °C @ 0.45 MPa
55 °C
Electrical
Dielectric Constant
3.5-4.0
3.0
Volume Resistivity
10¹⁰-10¹² Ω·cm
10¹⁴ Ω·cm
Dielectric Strength
12-18 MV/m
—
Chemical resistance
Acids
Good resistance
Fair
Bases
Good resistance
Poor
Solvents
Resistant to oils, greases. Attacked by strong acids.
—
UV Resistance
Moderate
Poor
Alcohols
—
Fair
Hydrolysis
—
Poor
Sustainability
Recyclability
Limited (composite)
Industrially compostable
Recycling Code
7 (Other)
7
Carbon Footprint
High
~1.6 kg CO₂e / kg
Bio-based Content
—
100 %