ASA vs PETG
Compare ASA and PETG filaments side-by-side so you can pick the right one for your 3D printing project.
ASA vs PETG: ASA is known for excellent uv resistance (outdoors indefinitely), while PETG is known for tougher than pla. PETG is easier to print; ASA prints at higher nozzle temperatures (220-275°C vs 230-250°C). Choose ASA for excellent uv resistance (outdoors indefinitely), or PETG for tougher than pla.
Key differences at a glance
ASA
AAcrylonitrile Styrene Acrylate
Excellent UV resistance (outdoors indefinitely), tough, matte surface
PETG
APolyethylene Terephthalate Glycol-modified
Tougher than PLA, higher temp tolerance, more durable in real-world use
Detailed Comparison
Green marks the generally easier or more forgiving option in that row, based on tier, enclosure needs, and moisture sensitivity. It is not always the better choice for a specific job, so weigh it against what your project actually needs.
Strengths Comparison
ASA Strengths
- Excellent UV resistance (outdoors indefinitely), tough, matte surface
- Less warping than ABS; low viscosity enables very high speed printing
- High heat tolerance (~boiling water range)
PETG Strengths
- Tougher than PLA, higher temp tolerance, more durable in real-world use
- Good clarity and low friction among easy-to-print materials
Considerations
ASA Caveats
- Still off-gasses; enclosure/ventilation recommended
- Can still warp; needs tuning
PETG Caveats
- Overhangs/bridges sag; supports can be hard to remove
- Absorbs water fairly quickly