Comparison
GF-PA Filament vs PEEK
A side-by-side comparison of Glass Fiber Reinforced Polyamide Filament for FDM and Polyether Ether Ketone.
Physical
Density
1.20-1.30 g/cm³
1.32 g/cm³
Water Absorption (24h)
0.4-0.9 %
0.15 %
Transparency
Opaque
Opaque (amber)
Shrinkage
Low (0.4-0.7%)
1.1 – 1.4 %
Mechanical
Young's Modulus
6-9 GPa
3.6 GPa
Tensile Strength
65-80 MPa
100 MPa
Elongation at Break
8-15 %
50 %
Impact Strength (Izod)
5-9 kJ/m²
55 J/m
Flexural Strength
—
170 MPa
Thermal
Glass Transition Temperature
50-60 °C
143 °C
Melting Point
175-185 °C
343 °C
Continuous Service Temperature
80-90 °C
260 °C
Heat Deflection Temperature
60-70 °C @ 0.45 MPa
160 °C
Electrical
Dielectric Constant
3.5-4.0
3.2
Volume Resistivity
10¹⁰-10¹² Ω·cm
10¹⁶ Ω·cm
Dielectric Strength
12-18 MV/m
—
Chemical resistance
Acids
Good resistance
Excellent
Bases
Good resistance
Excellent
Solvents
Resistant to oils, greases. Attacked by strong acids.
Excellent
UV Resistance
Moderate
Fair
Hydrolysis (steam)
—
Excellent
Sustainability
Recyclability
Limited (composite)
Recyclable (specialty)
Recycling Code
7 (Other)
7
Carbon Footprint
High
~30 kg CO₂e / kg