PEEK vs Polycarbonate
Compare PEEK and Polycarbonate filaments side-by-side so you can pick the right one for your 3D printing project.
PEEK
CPolyether Ether Ketone
Exceptional mechanical/thermal/chemical resistance; self-extinguishing; near metal alternative
Polycarbonate
BPC
Very tough and stiff; doesn't shatter like PLA
Detailed Comparison
Property
PEEK
Polycarbonate
Tier Rating
Tier C
Tier B
Family
PEEK-family
PC
Nozzle Temp
360-450°C
260-310°C
Bed Temp
120-200°C
90-120°C
Enclosure
required
required
Cooling
Minimal and controlled
Low cooling
Moisture Sensitivity
high
high
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
Polycarbonate Strengths
- Very tough and stiff; doesn't shatter like PLA
- High heat resistance (~150C softening region)
Considerations
PEEK Caveats
- Extremely expensive and very difficult to print; warping/curling issues (pricing varies widely by brand, so verify current pricing)
Polycarbonate Caveats
- Often overkill and high effort for typical use
Frequently Asked Questions
Is PEEK or Polycarbonate better for 3D printing?
Polycarbonate is generally rated higher (Tier B) 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 Polycarbonate is best for Very tough and stiff; doesn't shatter like PLA.
What are the temperature differences between PEEK and Polycarbonate?
PEEK prints at 360-450°C nozzle / 120-200°C bed. Polycarbonate prints at 260-310°C nozzle / 90-120°C bed.
Do PEEK and Polycarbonate need an enclosure?
PEEK: required. Polycarbonate: required.
Which is more beginner-friendly: PEEK or Polycarbonate?
Neither is particularly beginner-friendly - both typically require an enclosure.