Comparison
SLS PA12 Powder vs PETG
A side-by-side comparison of Polyamide 12 Powder for Selective Laser Sintering and Polyethylene Terephthalate Glycol.
Physical
Density
1.01-1.02 g/cm³
1.27 g/cm³
Water Absorption (24h)
0.2-0.5 %
0.13 %
Transparency
Opaque
Transparent
Shrinkage
Moderate (0.5-1.0%)
0.2 – 0.5 %
Mechanical
Young's Modulus
1.5-2.0 GPa
2.1 GPa
Tensile Strength
50-60 MPa
50 MPa
Elongation at Break
20-30 %
120 %
Impact Strength (Izod)
5-9 kJ/m²
100 J/m
Flexural Strength
—
70 MPa
Thermal
Glass Transition Temperature
45-55 °C
80 °C
Melting Point
175-185 °C
—
Continuous Service Temperature
70-80 °C
65 °C
Heat Deflection Temperature
40-50 °C @ 0.45 MPa
70 °C
CTE
—
68 × 10⁻⁶ /K
Electrical
Dielectric Constant
3.5-4.0
3.3
Volume Resistivity
10¹⁰-10¹² Ω·cm
10¹⁴ Ω·cm
Dielectric Strength
15-20 MV/m
—
Chemical resistance
Acids
Good resistance
Good
Bases
Good resistance
Fair
Solvents
Resistant to oils, greases, fuels. Attacked by strong acids.
—
UV Resistance
Moderate
Fair
Alcohols
—
Good
Oils
—
Good
Sustainability
Recyclability
Recyclable (within SLS process, often 50% recycled)
Recyclable
Recycling Code
7 (Other)
1
Carbon Footprint
High
~2.7 kg CO₂e / kg
Bio-based Content
—
0 %