PETG vs ASA
Compare PETG and ASA filaments side-by-side. See which one is best for your 3D printing project.
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
Property
PETG
ASA
Tier Rating
Tier A
Tier A
Family
PETG
ASA
Nozzle Temp
215-270°C
220-275°C
Bed Temp
70-90°C
90-110°C
Enclosure
optional
recommended
Cooling
Moderate cooling; too much cooling can hurt layer adhesion
Low to moderate; avoid drafts
Moisture Sensitivity
moderate
moderate
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
Frequently Asked Questions
Is PETG or ASA better for 3D printing?
PETG is generally rated higher (Tier A) compared to ASA (Tier A). However, the best choice depends on your specific needs: PETG is best for Tougher than PLA, higher temp tolerance, more durable in real-world use, while ASA is best for Excellent UV resistance (outdoors indefinitely), tough, matte surface.
What are the temperature differences between PETG and ASA?
PETG prints at 215-270°C nozzle / 70-90°C bed. ASA prints at 220-275°C nozzle / 90-110°C bed.
Do PETG and ASA need an enclosure?
PETG: optional. ASA: recommended.
Which is more beginner-friendly: PETG or ASA?
PETG is more beginner-friendly as it doesn't require an enclosure.