PP (Polypropylene) vs TPU

Compare PP (Polypropylene) and TPU filaments side-by-side so you can pick the right one for your 3D printing project.

PP (Polypropylene) vs TPU: PP (Polypropylene) is known for very tough, while TPU is known for excellent layer adhesion. Both have no enclosure requirements; PP (Polypropylene) is less moisture-sensitive; PP (Polypropylene) prints at higher nozzle temperatures (220-245°C vs 200-240°C). Choose PP (Polypropylene) for very tough, or TPU for excellent layer adhesion.

Key differences at a glance

Property
PP (Polypropylene)
TPU
Nozzle temp
220-245°C
200-240°C
Bed temp
70-100°C
30-60°C
Enclosure needed
No
No
Ease of printing
Easy
Easy
Moisture sensitivity
low
high

PP (Polypropylene)

-

Very tough, durable, all-weather, extremely lightweight

TPU

S

Thermoplastic Polyurethane

Excellent layer adhesion; extremely impact resistant; highly durable

Detailed Comparison

Property
PP (Polypropylene)
TPU
Tier Rating
Tier null
Tier S
Family
PP
Flexible
Nozzle Temp
220-245°C
200-240°C
Bed Temp
70-100°C
30-60°C
Enclosure
not needed
not needed
Cooling
Moderate cooling
Moisture Sensitivity
low
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

PP (Polypropylene) Strengths

  • Very tough, durable, all-weather, extremely lightweight
  • Industrial-relevant material properties

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)

Considerations

PP (Polypropylene) Caveats

  • Even harder to print than PP; peels/curls more aggressively

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

What is the difference between PP (Polypropylene) and TPU?
PP (Polypropylene) prints at 220-245°C nozzle / 70-100°C bed (No enclosure, low moisture sensitivity). TPU prints at 200-240°C nozzle / 30-60°C bed (No enclosure, high moisture sensitivity).
Is PP (Polypropylene) or TPU stronger?
Our dataset does not include comparable tensile strength values for both. Qualitatively, PP (Polypropylene) is suited to very tough, while TPU is suited to excellent layer adhesion.
Which prints at a higher temperature, PP (Polypropylene) or TPU?
PP (Polypropylene) prints at a higher temperature (220-245°C nozzle vs 200-240°C for TPU).
Is PP (Polypropylene) or TPU better for beginners?
PP (Polypropylene) is better for beginners: enclosure is no and moisture sensitivity is low, vs no enclosure and high moisture for TPU.
Should I use PP (Polypropylene) or TPU for flexible parts?
For flexible parts, TPU is usually the better fit (Excellent layer adhesion). Choose PP (Polypropylene) instead when very tough.

Other Popular Comparisons

PLA vs PETGPLA vs ABSPETG vs ABSPLA vs Tough PLAABS vs ASAASA vs PETG