Ultrafuse ASA vs PETG

Compare Ultrafuse ASA and PETG filaments side-by-side so you can pick the right one for your 3D printing project.

Ultrafuse ASA vs PETG: Ultrafuse ASA is known for excellent uv resistance (outdoors indefinitely), while PETG is known for tougher than pla. Ultrafuse ASA is easier to print; Ultrafuse ASA prints at higher nozzle temperatures (275°C vs 230-250°C). Choose Ultrafuse ASA for excellent uv resistance (outdoors indefinitely), or PETG for tougher than pla.

Key differences at a glance

Property
Ultrafuse ASA
PETG
Nozzle temp
275°C
230-250°C
Bed temp
105°C
70-90°C
Enclosure needed
No
Optional
Ease of printing
Easy
Moderate
Moisture sensitivity
low
moderate

Ultrafuse ASA

-

Excellent UV resistance (outdoors indefinitely), tough, matte surface

PETG

A

Polyethylene Terephthalate Glycol-modified

Tougher than PLA, higher temp tolerance, more durable in real-world use

Detailed Comparison

Property
Ultrafuse ASA
PETG
Tier Rating
Tier null
Tier A
Family
ASA
PETG
Nozzle Temp
275°C
230-250°C
Bed Temp
105°C
70-90°C
Enclosure
not needed
optional
Cooling
Moderate cooling; too much cooling can hurt layer adhesion
Moisture Sensitivity
low
moderate

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

Ultrafuse 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

Ultrafuse 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

Frequently Asked Questions

What is the difference between Ultrafuse ASA and PETG?
Ultrafuse ASA prints at 275°C nozzle / 105°C bed (No enclosure, low moisture sensitivity). PETG prints at 230-250°C nozzle / 70-90°C bed (Optional enclosure, moderate moisture sensitivity).
Is Ultrafuse ASA or PETG stronger?
Our dataset does not include comparable tensile strength values for both. Qualitatively, Ultrafuse ASA is suited to excellent uv resistance (outdoors indefinitely), while PETG is suited to tougher than pla.
Which prints at a higher temperature, Ultrafuse ASA or PETG?
Ultrafuse ASA prints at a higher temperature (275°C nozzle vs 230-250°C for PETG).
Is Ultrafuse ASA or PETG better for beginners?
Ultrafuse ASA is better for beginners: enclosure is no and moisture sensitivity is low, vs optional enclosure and moderate moisture for PETG.
Should I use Ultrafuse ASA or PETG for outdoor use?
For outdoor use, Ultrafuse ASA is usually the better fit (Excellent UV resistance (outdoors indefinitely)). Choose PETG instead when tougher than pla.

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