PSU vs PETG
Compare PSU and PETG filaments side-by-side so you can pick the right one for your 3D printing project.
PSU vs PETG: PSU is known for very high heat resistance (tg ~187c) and retains..., while PETG is known for tougher than pla. PETG is easier to print; PSU prints at higher nozzle temperatures (340-380°C vs 230-250°C). Choose PSU for very high heat resistance (tg ~187c) and retains..., or PETG for tougher than pla.
Key differences at a glance
PSU
BPolysulfone
Very high heat resistance (Tg ~187C) and retains strength near that range
PETG
APolyethylene Terephthalate Glycol-modified
Tougher than PLA, higher temp tolerance, more durable in real-world use
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
PSU Strengths
- Very high heat resistance (Tg ~187C) and retains strength near that range
- Resists water/radiation/chemicals; can be sterilized
- Enables 'citizen science' type projects
PETG Strengths
- Tougher than PLA, higher temp tolerance, more durable in real-world use
- Good clarity and low friction among easy-to-print materials
Considerations
PSU Caveats
- Often nylon is a better overall choice unless you need the heat/sterilization envelope
PETG Caveats
- Overhangs/bridges sag; supports can be hard to remove
- Absorbs water fairly quickly