PEEK vs ASA
Compare PEEK and ASA filaments side-by-side. See which one is best for your 3D printing project.
PEEK
CPolyether Ether Ketone
Exceptional mechanical/thermal/chemical resistance; self-extinguishing; near metal alternative
ASA
AAcrylonitrile Styrene Acrylate
Excellent UV resistance (outdoors indefinitely), tough, matte surface
Detailed Comparison
Property
PEEK
ASA
Tier Rating
Tier C
Tier A
Family
PEEK-family
ASA
Nozzle Temp
360-450°C
220-275°C
Bed Temp
120-200°C
90-110°C
Enclosure
required
recommended
Cooling
Minimal and controlled
Low to moderate; avoid drafts
Moisture Sensitivity
high
moderate
Strengths Comparison
PEEK Strengths
- Exceptional mechanical/thermal/chemical resistance; self-extinguishing; near metal alternative
- Extreme heat resistance, chemical resistance, and strength
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
PEEK Caveats
- Extremely expensive (~$700/kg) and very difficult to print; warping/curling issues
ASA Caveats
- Still off-gasses; enclosure/ventilation recommended
- Can still warp; needs tuning
Frequently Asked Questions
Is PEEK or ASA better for 3D printing?
ASA is generally rated higher (Tier A) compared to PEEK (Tier C). However, the best choice depends on your specific needs: PEEK is best for Exceptional mechanical/thermal/chemical resistance; self-extinguishing; near metal alternative, while ASA is best for Excellent UV resistance (outdoors indefinitely), tough, matte surface.
What are the temperature differences between PEEK and ASA?
PEEK prints at 360-450°C nozzle / 120-200°C bed. ASA prints at 220-275°C nozzle / 90-110°C bed.
Do PEEK and ASA need an enclosure?
PEEK: required. ASA: recommended.
Which is more beginner-friendly: PEEK or ASA?
Neither is particularly beginner-friendly - both typically require an enclosure.