# What filament handles cold/freezing temperatures?

Fiberlogy PP lists a glass transition of -31 °C (-24 °F). Its notched Charpy figure is 30 kJ/m² at 23 °C (73 °F), not at a freezing temperature. PolyLite PLA's glass transition is 61 °C (142 °F). None of these sheets states a cold-impact result.

Fiberlogy PP lists a glass transition of -31 °C (-24 °F). Its notched Charpy figure is 30 kJ/m² at 23 °C (73 °F), not at a freezing temperature. PolyLite PLA's glass transition is 61 °C (142 °F). None of these sheets states a cold-impact result.

The cited sheets publish warm softening and, in one case, a room-temperature impact. They do not publish a freezer impact. [Brittle filament](/answers/brittle), [outdoor use](/answers/outdoor), and [flexible filament](/answers/flex) are the nearby questions. Glass transition is a softening landmark. Charpy impact is a break test. A number from one is not a number from the other.
## The figures that exist

[Fiberlogy PP](/brand/fiberlogy/pp), read 26 October 2026, lists glass transition at -31 °C (88 °F), heat-deflection at 51 °C (124 °F) under 0.45 MPa, ISO 75, Vicat at 110 °C (230 °F), ISO 306, and notched Charpy impact at 30 kJ/m² at 23 °C (73 °F), ISO 179. The page does not list a second impact temperature. [PolyLite PLA](/brand/polymaker/polylite-pla) lists glass transition at 61 °C (142 °F) and heat-deflection at 60 °C (140 °F) and 58 °C (136 °F), checked 21 October 2026. [PolyLite PETG](/brand/polymaker/polylite-petg) lists glass transition at 81 °C (178 °F) and heat-deflection at 78 °C (172 °F) and 75 °C (167 °F). No cold-impact cell is stored for either PolyLite row.

The order is the polypropylene that publishes a sub-zero glass transition, then PLA, then PETG. It is not a claim that one of them is safe in a freezer.

Updated 2026-10-26. Sources accessed 2026-10-26. Use case: Outdoor.

## Ranked filaments

| Rank | Filament | Nozzle | Bed | Price per kg |
| --- | --- | --- | --- | --- |
| 1 | Fiberlogy PP | 210–240 °C (410–464 °F) | 80–100 °C (176–212 °F) | — |
| 2 | Polymaker Polylite PLA | 190–230 °C (374–446 °F) | 25–60 °C (77–140 °F) | — |
| 3 | Polymaker Polylite PETG | 220–250 °C (428–482 °F) | 70–90 °C (158–194 °F) | — |

## Sources

- [Fiberlogy PP product page](https://fiberlogy.com/en/filaments/pp-en/pp-pp-en/) (manufacturer)
- [Polymaker PolyLite PLA technical data sheet](https://cdn.shopify.com/s/files/1/0548/7299/7945/files/PolyLite_PLA_TDS_EN_V5.4.pdf) (datasheet)
- [Polymaker PolyLite PETG technical data sheet](https://cdn.shopify.com/s/files/1/0548/7299/7945/files/PolyLite_PETG_TDS_EN_V5.4.pdf) (datasheet)
- [a Reddit thread in r/FixMyPrint](https://www.reddit.com/r/FixMyPrint/comments/u150hn/) (reddit)
- [a Reddit thread in r/prusa3d](https://www.reddit.com/r/prusa3d/comments/1880k5e/) (reddit)
- [a Reddit thread in r/3Dprinting](https://www.reddit.com/r/3Dprinting/comments/sheify/) (reddit)
- [a Reddit thread in r/FixMyPrint](https://www.reddit.com/r/FixMyPrint/comments/tykd8s/) (reddit)
- [a Reddit thread in r/3Dprinting](https://www.reddit.com/r/3Dprinting/comments/1ixj2ke/) (reddit)

HTML: https://filamentfacts.com/answers/freezer