PEEK vs ASA
Compare PEEK and ASA filaments side-by-side so you can pick the right one for your 3D printing project.
PEEK vs ASA: PEEK is known for exceptional mechanical/thermal/chemical resistance, while ASA is known for excellent uv resistance (outdoors indefinitely). ASA is easier to print; PEEK prints at higher nozzle temperatures (360-450°C vs 220-275°C). Choose PEEK for exceptional mechanical/thermal/chemical resistance, or ASA for excellent uv resistance (outdoors indefinitely).
Key differences at a glance
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
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
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 and very difficult to print; warping/curling issues (pricing varies widely by brand, so verify current pricing)
ASA Caveats
- Still off-gasses; enclosure/ventilation recommended
- Can still warp; needs tuning