PEI vs TPU
Compare PEI and TPU filaments side-by-side. See which one is best for your 3D printing project.
PEI
-Versatile 3D printing filament
TPU
SThermoplastic Polyurethane
Perfect layer adhesion; extremely impact resistant; nearly indestructible
Detailed Comparison
Property
PEI
TPU
Tier Rating
Tier null
Tier S
Family
PEI
Flexible
Nozzle Temp
430°C
200-240°C
Bed Temp
150°C
30-60°C
Enclosure
not needed
not needed
Cooling
Moderate cooling
Moisture Sensitivity
low
high
Strengths Comparison
PEI Strengths
TPU Strengths
- Perfect layer adhesion; extremely impact resistant; nearly indestructible
- Great for combat robots, tactical/rough-use parts
- Rubber-like parts (gaskets, grips, bumpers, wheels)
Considerations
PEI Caveats
TPU Caveats
- Slow printing; retraction can cause jams (especially in Bowden setups)
- Stringing is common
- Very moisture sensitive; wet TPU prints poorly
Frequently Asked Questions
Is PEI or TPU better for 3D printing?
TPU is generally rated higher (Tier S) compared to PEI (Tier null). However, the best choice depends on your specific needs: PEI is best for various applications, while TPU is best for Perfect layer adhesion; extremely impact resistant; nearly indestructible.
What are the temperature differences between PEI and TPU?
PEI prints at 430°C nozzle / 150°C bed. TPU prints at 200-240°C nozzle / 30-60°C bed.
Do PEI and TPU need an enclosure?
PEI: not needed. TPU: not needed.
Which is more beginner-friendly: PEI or TPU?
Both PEI and TPU are beginner-friendly options.