Comparison
PA66 vs Polycarbonate
A side-by-side comparison of Polyamide 6,6 (Nylon) and Polycarbonate.
Physical
Density
1.14 g/cm³
1.20 g/cm³
Water Absorption (24h)
1.2 %
0.15 %
Transparency
Opaque
Transparent (88% light transmission)
Shrinkage
1.5 – 2.0 %
0.5 – 0.8 %
Mechanical
Young's Modulus
3.0 GPa (dry)
2.3 – 2.4 GPa
Tensile Strength
80 MPa
60 – 70 MPa
Flexural Strength
110 MPa
90 – 100 MPa
Impact Strength (Izod)
50 J/m
600 – 900 J/m
Elongation at Break
60 %
100 – 150 %
Hardness (Rockwell M)
—
70
Thermal
Melting Point
255 – 265 °C
—
Glass Transition Temperature
70 °C
147 °C
Continuous Service Temperature
100 – 120 °C
115 – 130 °C
Heat Deflection Temperature
75 °C (unfilled)
130 – 140 °C
Thermal Conductivity
—
0.20 W/m·K
CTE
—
65 – 70 × 10⁻⁶ /K
Electrical
Dielectric Constant
4.0
2.9 – 3.0
Volume Resistivity
10¹² Ω·cm
10¹⁶ Ω·cm
Dielectric Strength
—
15 kV/mm
Chemical resistance
Acids
Poor
—
Bases
Good
Poor
Alcohols
Good
Fair
Oils & Fuels
Excellent
—
UV Resistance
Fair
Poor (unless coated)
Acids (dilute)
—
Good
Oils
—
Good
Gasoline
—
Fair
Acetone
—
Poor (attacks)
Sustainability
Recyclability
Recyclable
Recyclable
Recycling Code
7
7
Bio-based Content
0 – 100 % (bio grades)
0 – 50 % (bio grades)
Carbon Footprint
~7.4 kg CO₂e / kg
~5 kg CO₂e / kg