Comparison
SLS PP Powder vs PA66
A side-by-side comparison of Polypropylene Powder for Selective Laser Sintering and Polyamide 6,6 (Nylon).
Physical
Density
0.90-0.92 g/cm³
1.14 g/cm³
Water Absorption (24h)
<0.1 %
1.2 %
Transparency
Opaque
Opaque
Shrinkage
Moderate (1.0-2.0%)
1.5 – 2.0 %
Mechanical
Young's Modulus
0.8-1.2 GPa
3.0 GPa (dry)
Tensile Strength
25-35 MPa
80 MPa
Elongation at Break
15-25 %
60 %
Impact Strength (Izod)
High (notched)
50 J/m
Flexural Strength
—
110 MPa
Thermal
Glass Transition Temperature
-10 to 0 °C
70 °C
Melting Point
160-170 °C
255 – 265 °C
Continuous Service Temperature
60-70 °C
100 – 120 °C
Heat Deflection Temperature
40-50 °C @ 0.45 MPa
75 °C (unfilled)
Electrical
Dielectric Constant
2.2-2.3
4.0
Volume Resistivity
10¹⁵-10¹⁷ Ω·cm
10¹² Ω·cm
Dielectric Strength
20-25 MV/m
—
Chemical resistance
Acids
Excellent resistance
Poor
Bases
Excellent resistance
Good
Solvents
Resistant to most organic solvents. Attacked by strong oxidizing agents.
—
UV Resistance
Poor (requires additives)
Fair
Alcohols
—
Good
Oils & Fuels
—
Excellent
Sustainability
Recyclability
Recyclable (within SLS/MJF process)
Recyclable
Recycling Code
5 (PP)
7
Carbon Footprint
Moderate
~7.4 kg CO₂e / kg
Bio-based Content
—
0 – 100 % (bio grades)