Comparison
MJF PA12 Powder vs PEEK
A side-by-side comparison of Polyamide 12 Powder for Multi Jet Fusion and Polyether Ether Ketone.
Physical
Density
1.01-1.02 g/cm³
1.32 g/cm³
Water Absorption (24h)
0.2-0.5 %
0.15 %
Transparency
Opaque
Opaque (amber)
Shrinkage
Moderate (0.6-1.2%)
1.1 – 1.4 %
Mechanical
Young's Modulus
1.6-2.1 GPa
3.6 GPa
Tensile Strength
52-62 MPa
100 MPa
Elongation at Break
22-35 %
50 %
Impact Strength (Izod)
6-10 kJ/m²
55 J/m
Flexural Strength
—
170 MPa
Thermal
Glass Transition Temperature
45-55 °C
143 °C
Melting Point
175-185 °C
343 °C
Continuous Service Temperature
70-80 °C
260 °C
Heat Deflection Temperature
45-55 °C @ 0.45 MPa
160 °C
Electrical
Dielectric Constant
3.5-4.0
3.2
Volume Resistivity
10¹¹-10¹³ Ω·cm
10¹⁶ Ω·cm
Dielectric Strength
16-22 MV/m
—
Chemical resistance
Acids
Good resistance
Excellent
Bases
Good resistance
Excellent
Solvents
Resistant to oils, greases, fuels. Attacked by strong acids.
Excellent
UV Resistance
Moderate
Fair
Hydrolysis (steam)
—
Excellent
Sustainability
Recyclability
Recyclable (up to 50% reusability in MJF)
Recyclable (specialty)
Recycling Code
7 (Other)
7
Carbon Footprint
High
~30 kg CO₂e / kg