Comparison
rHDPE PCR Natural vs PA66
A side-by-side comparison of Recycled High-Density Polyethylene Post-Consumer Recycled Natural and Polyamide 6,6 (Nylon).
Physical
Density
0.940-0.965 g/cm³
1.14 g/cm³
Water Absorption (24h)
0.01-0.03 %
1.2 %
Transparency
Opaque
Opaque
Shrinkage
1.5-3.0 %
1.5 – 2.0 %
Mechanical
Young's Modulus
0.9-1.5 GPa
3.0 GPa (dry)
Tensile Strength
20-35 MPa
80 MPa
Elongation at Break
200-600 %
60 %
Impact Strength (Izod)
10-25 J/m
50 J/m
Flexural Strength
—
110 MPa
Thermal
Glass Transition Temperature
-120 °C
70 °C
Melting Point
125-135 °C
255 – 265 °C
Continuous Service Temperature
60-80 °C
100 – 120 °C
Heat Deflection Temperature
40-50 °C (0.45 MPa)
75 °C (unfilled)
Electrical
Dielectric Constant
2.25-2.35
4.0
Volume Resistivity
>10^15 Ohm·cm
10¹² Ω·cm
Dielectric Strength
15-25 kV/mm
—
Chemical resistance
Acids
Excellent
Poor
Bases
Excellent
Good
Solvents
Good resistance to most organic solvents at room temperature
—
UV Resistance
Moderate (can degrade with prolonged UV exposure)
Fair
Alcohols
—
Good
Oils & Fuels
—
Excellent
Sustainability
Recyclability
Highly Recyclable
Recyclable
Recycling Code
2 (HDPE)
7
Carbon Footprint
Significantly lower than virgin HDPE
~7.4 kg CO₂e / kg
Bio-based Content
—
0 – 100 % (bio grades)