TPU vs Nylon PA6
Compare TPU and Nylon PA6 filaments side-by-side so you can pick the right one for your 3D printing project.
TPU
SThermoplastic Polyurethane
Excellent layer adhesion; extremely impact resistant; highly durable
Nylon PA6
BPolyamide 6
Exceptional strength, very strong layer bonding, flexible and durable
Detailed Comparison
Property
TPU
Nylon PA6
Tier Rating
Tier S
Tier B
Family
Flexible
Nylon (PA)
Nozzle Temp
200-240°C
240-290°C
Bed Temp
30-60°C
70-110°C
Enclosure
not needed
required
Cooling
Moderate cooling
Low to moderate
Moisture Sensitivity
high
very 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
TPU Strengths
- Excellent layer adhesion; extremely impact resistant; highly durable
- Great for combat robots, tactical/rough-use parts
- Rubber-like parts (gaskets, grips, bumpers, wheels)
Nylon PA6 Strengths
- Exceptional strength, very strong layer bonding, flexible and durable
- High heat tolerance; low friction for mechanisms
Considerations
TPU Caveats
- Slow printing; retraction can cause jams (especially in Bowden setups)
- Stringing is common
- Very moisture sensitive; wet TPU prints poorly
Nylon PA6 Caveats
- Extremely hygroscopic; can waterlog during a print
- Warps strongly; can pull plates off beds
- Over-drying can make it brittle
Frequently Asked Questions
Is TPU or Nylon PA6 better for 3D printing?
TPU is generally rated higher (Tier S) compared to Nylon PA6 (Tier B). However, the best choice depends on your specific needs: TPU is best for Excellent layer adhesion; extremely impact resistant; highly durable, while Nylon PA6 is best for Exceptional strength, very strong layer bonding, flexible and durable.
What are the temperature differences between TPU and Nylon PA6?
TPU prints at 200-240°C nozzle / 30-60°C bed. Nylon PA6 prints at 240-290°C nozzle / 70-110°C bed.
Do TPU and Nylon PA6 need an enclosure?
TPU: not needed. Nylon PA6: required.
Which is more beginner-friendly: TPU or Nylon PA6?
TPU is more beginner-friendly as it doesn't require an enclosure.