Comparison
ASA FDM Filament vs PETG
A side-by-side comparison of Acrylonitrile Styrene Acrylate Filament for FDM and Polyethylene Terephthalate Glycol.
Physical
Density
1.07 g/cm³
1.27 g/cm³
Water Absorption (24h)
0.1-0.3 %
0.13 %
Transparency
Opaque
Transparent
Shrinkage
Moderate (0.4-0.7%)
0.2 – 0.5 %
Mechanical
Young's Modulus
2.5-3.0 GPa
2.1 GPa
Tensile Strength
45-55 MPa
50 MPa
Elongation at Break
4-7 %
120 %
Impact Strength (Izod)
3-6 kJ/m²
100 J/m
Flexural Strength
—
70 MPa
Thermal
Glass Transition Temperature
90-100 °C
80 °C
Melting Point
230-250 °C
—
Continuous Service Temperature
70-80 °C
65 °C
Heat Deflection Temperature
80-90 °C @ 0.45 MPa
70 °C
CTE
—
68 × 10⁻⁶ /K
Electrical
Dielectric Constant
3.0-3.2
3.3
Volume Resistivity
10¹³-10¹⁵ Ω·cm
10¹⁴ Ω·cm
Dielectric Strength
18-25 MV/m
—
Chemical resistance
Acids
Good resistance to dilute acids
Good
Bases
Moderate resistance to weak bases
Fair
Solvents
Attacked by ketones, esters, chlorinated hydrocarbons
—
UV Resistance
Excellent
Fair
Alcohols
—
Good
Oils
—
Good
Sustainability
Recyclability
Recyclable (ABS stream, though less common)
Recyclable
Recycling Code
7 (Other)
1
Carbon Footprint
Moderate to High
~2.7 kg CO₂e / kg
Bio-based Content
—
0 %