TPU vs ASA
How TPU and ASA compare, from typical settings across every filament we list.
- TPU is easier to print, tougher and more flexible; ASA is stiffer, more heat resistant and better outdoors.
- ASA typically prints about 25 °C hotter at the nozzle.
- ASA typically prints about 55 °C hotter on the bed.
- ASA is less dense, so a 1 kg spool holds about 45 m more 1.75 mm filament.
- There are 158 TPU filaments in 945 colours, and 109 ASA filaments in 638 colours.
At a glance
Our rating, out of 5| TPU | ASA | |
|---|---|---|
| Ease of printing | Easier to print | |
| Toughness | Tougher | |
| Stiffness | Stiffer | |
| Heat resistance | More heat resistant | |
| Outdoor and UV | Better outdoors | |
| Flexibility | More flexible | |
| Setup | Dry before printing | Needs an enclosure, Needs ventilation |
| TPU | ASA | |
|---|---|---|
| Full name | Thermoplastic polyurethane | Acrylonitrile styrene acrylate |
| Filaments listed | 158 | 109 |
| Brands | 70 | 66 |
| Colours | 945 | 638 |
| Nozzle temperature | 210–240 °C | 235–260 °C |
| Bed temperature | 30–60 °C | 90–110 °C |
| Density | 1.21 g/cm³ | 1.07 g/cm³ |
| Length of 1 kg (1.75 mm) | about 344 m | about 389 m |
| Max drying temperature | 70 °C | 85 °C |
Temperatures are medians across each material's filaments, rounded to 5 °C. Always check the maker's settings for a specific filament.
Brands that make both
47 brands make both TPU and ASA; these have the most of each.