PEEK vs PETG
Compare PEEK and PETG filaments side-by-side so you can pick the right one for your 3D printing project.
PEEK vs PETG: PEEK is known for exceptional mechanical/thermal/chemical resistance, while PETG is known for tougher than pla. PETG is easier to print; PEEK prints at higher nozzle temperatures (360-450°C vs 230-250°C). Choose PEEK for exceptional mechanical/thermal/chemical resistance, or PETG for tougher than pla.
Key differences at a glance
PEEK
CPolyether Ether Ketone
Exceptional mechanical/thermal/chemical resistance; self-extinguishing; near metal alternative
PETG
APolyethylene Terephthalate Glycol-modified
Tougher than PLA, higher temp tolerance, more durable in real-world use
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
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
PEEK Caveats
- Extremely expensive and very difficult to print; warping/curling issues (pricing varies widely by brand, so verify current pricing)
PETG Caveats
- Overhangs/bridges sag; supports can be hard to remove
- Absorbs water fairly quickly