PETG vs ASA
Compare PETG and ASA filaments side-by-side so you can pick the right one for your 3D printing project.
PETG vs ASA: PETG is known for tougher than pla, while ASA is known for excellent uv resistance (outdoors indefinitely). PETG is easier to print; ASA prints at higher nozzle temperatures (220-275°C vs 230-250°C). Choose PETG for tougher than pla, or ASA for excellent uv resistance (outdoors indefinitely).
Key differences at a glance
PETG
APolyethylene Terephthalate Glycol-modified
Tougher than PLA, higher temp tolerance, more durable in real-world use
ASA
AAcrylonitrile Styrene Acrylate
Excellent UV resistance (outdoors indefinitely), tough, matte surface
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
PETG Strengths
- Tougher than PLA, higher temp tolerance, more durable in real-world use
- Good clarity and low friction among easy-to-print materials
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)
Considerations
PETG Caveats
- Overhangs/bridges sag; supports can be hard to remove
- Absorbs water fairly quickly
ASA Caveats
- Still off-gasses; enclosure/ventilation recommended
- Can still warp; needs tuning