Comparison
MJF PA12 Powder vs PA66
A side-by-side comparison of Polyamide 12 Powder for Multi Jet Fusion and Polyamide 6,6 (Nylon).
Physical
Density
1.01-1.02 g/cm³
1.14 g/cm³
Water Absorption (24h)
0.2-0.5 %
1.2 %
Transparency
Opaque
Opaque
Shrinkage
Moderate (0.6-1.2%)
1.5 – 2.0 %
Mechanical
Young's Modulus
1.6-2.1 GPa
3.0 GPa (dry)
Tensile Strength
52-62 MPa
80 MPa
Elongation at Break
22-35 %
60 %
Impact Strength (Izod)
6-10 kJ/m²
50 J/m
Flexural Strength
—
110 MPa
Thermal
Glass Transition Temperature
45-55 °C
70 °C
Melting Point
175-185 °C
255 – 265 °C
Continuous Service Temperature
70-80 °C
100 – 120 °C
Heat Deflection Temperature
45-55 °C @ 0.45 MPa
75 °C (unfilled)
Electrical
Dielectric Constant
3.5-4.0
4.0
Volume Resistivity
10¹¹-10¹³ Ω·cm
10¹² Ω·cm
Dielectric Strength
16-22 MV/m
—
Chemical resistance
Acids
Good resistance
Poor
Bases
Good resistance
Good
Solvents
Resistant to oils, greases, fuels. Attacked by strong acids.
—
UV Resistance
Moderate
Fair
Alcohols
—
Good
Oils & Fuels
—
Excellent
Sustainability
Recyclability
Recyclable (up to 50% reusability in MJF)
Recyclable
Recycling Code
7 (Other)
7
Carbon Footprint
High
~7.4 kg CO₂e / kg
Bio-based Content
—
0 – 100 % (bio grades)