PLA and TPU are opposites. PLA is hard and rigid. TPU is soft and flexible. The part you want to make picks the filament, because no print needs both at once.
How they compare
The table maps the gap between a hard plastic and a flexible elastomer.
| Property | PLA | TPU |
|---|---|---|
| Rigidity | High | Low |
| Flexibility | Low | High |
| Ease of print | Easy | Medium |
| Nozzle temperature | 200 to 220 °C | 210 to 230 °C |
| Print speed | 40 to 60 mm/s | 20 to 40 mm/s |
| Best for | Hard models | Flexible parts |
When to pick PLA
Pick PLA for rigid models, miniatures, and prototypes. It prints at 200 to 220 °C, per the Prusament PLA datasheet, and it is the easiest filament to print.
When to pick TPU
Pick TPU for parts that must bend, like cases, gaskets, and grips. The Polymaker PolyFlex TPU95 sheet lists a nozzle of 210 to 230 °C. TPU needs a direct drive extruder and slow speeds.
Frequently asked
Is TPU stronger than PLA?
Different strength. PLA is strong and rigid. TPU is tough and flexible, so it absorbs impact by bending.
Is flexible PLA the same as TPU?
No. Flexible PLA blends soften PLA but stay weaker and less durable than TPU. TPU is the real flexible filament.
Can I print TPU on any printer?
A direct drive extruder works best. A Bowden extruder can print slow TPU but struggles. PLA prints on any printer.
Which is better for a phone case?
TPU. A phone case needs to flex and absorb drops. PLA is too rigid and cracks.
To go deeper, read what PLA is or the TPU guide. For a tough rigid alternative, see PETG versus TPU.
Related guides
Related
Sources & methodology
4 citations · reviewed 2026-07-09- 01Prusament PLA Technical Datasheetaccessed 2026-06-29Tier 1
- 02Bambu Lab TPU Usage Guideaccessed 2026-07-09Tier 1
- 03Polymaker PolyFlex TPU95 Product Information Sheetaccessed 2026-07-09Tier 1
- 04All3DP All 3D Printing Filament Types Explainedaccessed 2026-06-29Tier 2
How we vetted this: every claim traces to a tiered source, Tier 1 (manufacturer, slicer, standards) first. Read the full sourcing and conflict-of-interest policy.