Comparison
MJF PA11 Powder vs Polycarbonate
A side-by-side comparison of Polyamide 11 Powder for Multi Jet Fusion and Polycarbonate.
Physical
Density
1.03-1.05 g/cm³
1.20 g/cm³
Water Absorption (24h)
0.7-1.2 %
0.15 %
Transparency
Opaque
Transparent (88% light transmission)
Shrinkage
Moderate (0.7-1.3%)
0.5 – 0.8 %
Mechanical
Young's Modulus
1.4-1.8 GPa
2.3 – 2.4 GPa
Tensile Strength
45-55 MPa
60 – 70 MPa
Elongation at Break
25-40 %
100 – 150 %
Impact Strength (Izod)
8-12 kJ/m²
600 – 900 J/m
Flexural Strength
—
90 – 100 MPa
Hardness (Rockwell M)
—
70
Thermal
Glass Transition Temperature
40-50 °C
147 °C
Melting Point
180-190 °C
—
Continuous Service Temperature
60-70 °C
115 – 130 °C
Heat Deflection Temperature
35-45 °C @ 0.45 MPa
130 – 140 °C
Thermal Conductivity
—
0.20 W/m·K
CTE
—
65 – 70 × 10⁻⁶ /K
Electrical
Dielectric Constant
3.8-4.2
2.9 – 3.0
Volume Resistivity
10¹⁰-10¹² Ω·cm
10¹⁶ Ω·cm
Dielectric Strength
14-19 MV/m
15 kV/mm
Chemical resistance
Acids
Good resistance
—
Bases
Good resistance
Poor
Solvents
Resistant to oils, greases, fuels. Attacked by strong acids.
—
UV Resistance
Moderate
Poor (unless coated)
Acids (dilute)
—
Good
Alcohols
—
Fair
Oils
—
Good
Gasoline
—
Fair
Acetone
—
Poor (attacks)
Sustainability
Recyclability
Recyclable (within MJF/SLS process)
Recyclable
Recycling Code
7 (Other)
7
Carbon Footprint
Moderate (bio-based origin)
~5 kg CO₂e / kg
Bio-based Content
—
0 – 50 % (bio grades)