Choosing between PETG and PETG-CF? Here is how they stack up on the properties that matter, plus a clear pick for each situation. PETG: PETG is strong and weather-resistant but strings easily, so tune retraction and keep the fan low. PETG-CF: Carbon-fibre PETG combines PETG toughness with extra stiffness and demands a hardened nozzle.
Short answer: PETG wins on more categories overall (4 of 6), but the right choice depends on the part — see the recommendations below.
Head-to-head
Property profile overlaid
PETGPETG-CF
The larger the shape on an axis, the stronger that material is on that property. Where one shape sits outside the other, that material wins that trait.
| Property | PETG | PETG-CF |
|---|---|---|
| Strength | 70 | 82 |
| Heat resistance | 55 | 60 |
| Flexibility | 40 | 15 |
| Durability | 75 | 70 |
| Ease of printing | 70 | 55 |
| Detail / finish | 70 | 55 |
Print settings compared
| Setting | PETG | PETG-CF |
|---|---|---|
| Hotend | 240°C (230–250) | 250°C (240–260) |
| Bed | 80°C | 80°C |
| Speed | 50 mm/s | 45 mm/s |
| Enclosure | Not needed | Not needed |
| Nozzle | Brass OK | Hardened |
| Difficulty | Intermediate | Advanced |
| Typical price / kg | ~$24 | ~$42 |
Which should you pick?
You are a beginner or need clean, easy prints
Pick PETG
Pick PETG
The part will live outdoors or get hot
Pick PETG-CF
Pick PETG-CF
The part must survive drops and stress
Pick PETG
Pick PETG
You need the part to flex or absorb shock
Pick PETG
Pick PETG
Reviewed 2026-08-18. Scores are relative guidance, not lab data.