Comparison
PA6 FDM Filament vs PA66
A side-by-side comparison of Polyamide 6 Filament for FDM and Polyamide 6,6 (Nylon).
Physical
Density
1.13-1.15 g/cm³
1.14 g/cm³
Water Absorption (24h)
1.0-2.0 %
1.2 %
Transparency
Opaque
Opaque
Shrinkage
Moderate (0.8-1.2%)
1.5 – 2.0 %
Mechanical
Young's Modulus
2.5-3.0 GPa
3.0 GPa (dry)
Tensile Strength
60-70 MPa
80 MPa
Elongation at Break
15-25 %
60 %
Impact Strength (Izod)
6-12 kJ/m²
50 J/m
Flexural Strength
—
110 MPa
Thermal
Glass Transition Temperature
50-60 °C
70 °C
Melting Point
215-225 °C
255 – 265 °C
Continuous Service Temperature
80-90 °C
100 – 120 °C
Heat Deflection Temperature
50-60 °C @ 0.45 MPa
75 °C (unfilled)
Electrical
Dielectric Constant
4.0-4.5
4.0
Volume Resistivity
10⁹-10¹¹ Ω·cm
10¹² Ω·cm
Dielectric Strength
12-18 MV/m
—
Chemical resistance
Acids
Resistant to weak acids
Poor
Bases
Resistant to weak bases
Good
Solvents
Resistant to oils, greases. Attacked by strong acids, phenols.
—
UV Resistance
Moderate
Fair
Alcohols
—
Good
Oils & Fuels
—
Excellent
Sustainability
Recyclability
Recyclable (within PA stream)
Recyclable
Recycling Code
7 (Other)
7
Carbon Footprint
High
~7.4 kg CO₂e / kg
Bio-based Content
—
0 – 100 % (bio grades)