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 %