Comparison
MJF PA12 Powder vs PETG
A side-by-side comparison of Polyamide 12 Powder for Multi Jet Fusion 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 (0.6-1.2%)
0.2 – 0.5 %
Mechanical
Young's Modulus
1.6-2.1 GPa
2.1 GPa
Tensile Strength
52-62 MPa
50 MPa
Elongation at Break
22-35 %
120 %
Impact Strength (Izod)
6-10 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
45-55 °C @ 0.45 MPa
70 °C
CTE
—
68 × 10⁻⁶ /K
Electrical
Dielectric Constant
3.5-4.0
3.3
Volume Resistivity
10¹¹-10¹³ Ω·cm
10¹⁴ Ω·cm
Dielectric Strength
16-22 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 (up to 50% reusability in MJF)
Recyclable
Recycling Code
7 (Other)
1
Carbon Footprint
High
~2.7 kg CO₂e / kg
Bio-based Content
—
0 %