Comparison
PC FDM Filament vs PEEK
A side-by-side comparison of Polycarbonate Filament for FDM and Polyether Ether Ketone.
Physical
Density
1.20-1.22 g/cm³
1.32 g/cm³
Water Absorption (24h)
0.2-0.4 %
0.15 %
Transparency
Transparent to Translucent
Opaque (amber)
Shrinkage
Moderate (0.4-0.7%)
1.1 – 1.4 %
Mechanical
Young's Modulus
2.0-2.5 GPa
3.6 GPa
Tensile Strength
60-70 MPa
100 MPa
Elongation at Break
5-10 %
50 %
Impact Strength (Izod)
15-25 kJ/m²
55 J/m
Flexural Strength
—
170 MPa
Thermal
Glass Transition Temperature
130-145 °C
143 °C
Melting Point
230-300 °C (softens)
343 °C
Continuous Service Temperature
100-120 °C
260 °C
Heat Deflection Temperature
120-135 °C @ 1.82 MPa
160 °C
Electrical
Dielectric Constant
3.0-3.2
3.2
Volume Resistivity
10¹³-10¹⁵ Ω·cm
10¹⁶ Ω·cm
Dielectric Strength
15-20 MV/m
—
Chemical resistance
Acids
Resistant to dilute acids
Excellent
Bases
Attacked by strong bases
Excellent
Solvents
Attacked by ketones, esters, chlorinated hydrocarbons. Attacked by NaOH.
Excellent
UV Resistance
Moderate (can yellow)
Fair
Hydrolysis (steam)
—
Excellent
Sustainability
Recyclability
Recyclable (within PC stream)
Recyclable (specialty)
Recycling Code
7 (Other)
7
Carbon Footprint
High
~30 kg CO₂e / kg