Comparison
SLS PP Powder vs PETG
A side-by-side comparison of Polypropylene Powder for Selective Laser Sintering and Polyethylene Terephthalate Glycol.
Physical
Density
0.90-0.92 g/cm³
1.27 g/cm³
Water Absorption (24h)
<0.1 %
0.13 %
Transparency
Opaque
Transparent
Shrinkage
Moderate (1.0-2.0%)
0.2 – 0.5 %
Mechanical
Young's Modulus
0.8-1.2 GPa
2.1 GPa
Tensile Strength
25-35 MPa
50 MPa
Elongation at Break
15-25 %
120 %
Impact Strength (Izod)
High (notched)
100 J/m
Flexural Strength
—
70 MPa
Thermal
Glass Transition Temperature
-10 to 0 °C
80 °C
Melting Point
160-170 °C
—
Continuous Service Temperature
60-70 °C
65 °C
Heat Deflection Temperature
40-50 °C @ 0.45 MPa
70 °C
CTE
—
68 × 10⁻⁶ /K
Electrical
Dielectric Constant
2.2-2.3
3.3
Volume Resistivity
10¹⁵-10¹⁷ Ω·cm
10¹⁴ Ω·cm
Dielectric Strength
20-25 MV/m
—
Chemical resistance
Acids
Excellent resistance
Good
Bases
Excellent resistance
Fair
Solvents
Resistant to most organic solvents. Attacked by strong oxidizing agents.
—
UV Resistance
Poor (requires additives)
Fair
Alcohols
—
Good
Oils
—
Good
Sustainability
Recyclability
Recyclable (within SLS/MJF process)
Recyclable
Recycling Code
5 (PP)
1
Carbon Footprint
Moderate
~2.7 kg CO₂e / kg
Bio-based Content
—
0 %