Comparison
MJF PA11 Powder vs PETG
A side-by-side comparison of Polyamide 11 Powder for Multi Jet Fusion and Polyethylene Terephthalate Glycol.
Physical
Density
1.03-1.05 g/cm³
1.27 g/cm³
Water Absorption (24h)
0.7-1.2 %
0.13 %
Transparency
Opaque
Transparent
Shrinkage
Moderate (0.7-1.3%)
0.2 – 0.5 %
Mechanical
Young's Modulus
1.4-1.8 GPa
2.1 GPa
Tensile Strength
45-55 MPa
50 MPa
Elongation at Break
25-40 %
120 %
Impact Strength (Izod)
8-12 kJ/m²
100 J/m
Flexural Strength
—
70 MPa
Thermal
Glass Transition Temperature
40-50 °C
80 °C
Melting Point
180-190 °C
—
Continuous Service Temperature
60-70 °C
65 °C
Heat Deflection Temperature
35-45 °C @ 0.45 MPa
70 °C
CTE
—
68 × 10⁻⁶ /K
Electrical
Dielectric Constant
3.8-4.2
3.3
Volume Resistivity
10¹⁰-10¹² Ω·cm
10¹⁴ Ω·cm
Dielectric Strength
14-19 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 MJF/SLS process)
Recyclable
Recycling Code
7 (Other)
1
Carbon Footprint
Moderate (bio-based origin)
~2.7 kg CO₂e / kg
Bio-based Content
—
0 %