PCTG vs ASA

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

PCTG vs ASA: PCTG is known for tough, while ASA is known for excellent uv resistance (outdoors indefinitely). PCTG is easier to print; ASA prints at higher nozzle temperatures (220-275°C vs 230-260°C). Choose PCTG for tough, or ASA for excellent uv resistance (outdoors indefinitely).

Key differences at a glance

Property
PCTG
ASA
Nozzle temp
230-260°C
220-275°C
Bed temp
70-85°C
90-110°C
Enclosure needed
Optional
Recommended
Ease of printing
Moderate
Moderate
Moisture sensitivity
moderate
moderate

PCTG

S

Polycyclohexylene Dimethylene Terephthalate Glycol-modified

Tough, strong layer adhesion, minimal warping/sagging

ASA

A

Acrylonitrile Styrene Acrylate

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

Detailed Comparison

Property
PCTG
ASA
Tier Rating
Tier S
Tier A
Family
PETG
ASA
Nozzle Temp
230-260°C
220-275°C
Bed Temp
70-85°C
90-110°C
Enclosure
optional
recommended
Cooling
Moderate cooling
Low to moderate; avoid drafts
Moisture Sensitivity
moderate
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

PCTG Strengths

  • Tough, strong layer adhesion, minimal warping/sagging
  • Lower moisture uptake vs PETG; very easy printing for performance level

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

PCTG Caveats

  • Supports can be hard to remove
  • Expensive and harder to find

ASA Caveats

  • Still off-gasses; enclosure/ventilation recommended
  • Can still warp; needs tuning

Frequently Asked Questions

What is the difference between PCTG and ASA?
PCTG prints at 230-260°C nozzle / 70-85°C bed (Optional enclosure, moderate moisture sensitivity). ASA prints at 220-275°C nozzle / 90-110°C bed (Recommended enclosure, moderate moisture sensitivity).
Is PCTG or ASA stronger?
Our dataset does not include comparable tensile strength values for both. Qualitatively, PCTG is suited to tough, while ASA is suited to excellent uv resistance (outdoors indefinitely).
Which prints at a higher temperature, PCTG or ASA?
ASA prints at a higher temperature (220-275°C nozzle vs 230-260°C for PCTG).
Is PCTG or ASA better for beginners?
PCTG is better for beginners: enclosure is optional and moisture sensitivity is moderate, vs recommended enclosure and moderate moisture for ASA.
Should I use PCTG or ASA for outdoor use?
For outdoor use, ASA is usually the better fit (Excellent UV resistance (outdoors indefinitely)). Choose PCTG instead when tough.

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