Nylon PA12 vs TPU
Compare Nylon PA12 and TPU filaments side-by-side so you can pick the right one for your 3D printing project.
Nylon PA12 vs TPU: Nylon PA12 is known for absorbs far less moisture than pa6 (~0.3% vs ~3%), while TPU is known for excellent layer adhesion. TPU is easier to print; Nylon PA12 is less moisture-sensitive; Nylon PA12 prints at higher nozzle temperatures (240-270°C vs 200-240°C). Choose Nylon PA12 for absorbs far less moisture than pa6 (~0.3% vs ~3%), or TPU for excellent layer adhesion.
Key differences at a glance
Nylon PA12
BPolyamide 12
Absorbs far less moisture than PA6 (~0.3% vs ~3%), so it holds dimensions in humid air and is much more forgiving to print
TPU
SThermoplastic Polyurethane
Excellent layer adhesion; extremely impact resistant; highly durable
Detailed Comparison
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
Nylon PA12 Strengths
- Absorbs far less moisture than PA6 (~0.3% vs ~3%), so it holds dimensions in humid air and is much more forgiving to print
- Tougher and more impact resistant than PA6, especially in the cold; good chemical and abrasion resistance
- Good for tubing, clips, connectors and flexible mechanical parts
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
Nylon PA12 Caveats
- Less stiff than PA6 (flexural modulus roughly 1.4-1.5 GPa vs 2.8-3.0 GPa)
- Lower heat resistance than PA6; melts around 178C rather than 220C
- More expensive than PA6
TPU Caveats
- Slow printing; retraction can cause jams (especially in Bowden setups)
- Stringing is common
- Very moisture sensitive; wet TPU prints poorly