Outdoor
What filament handles cold/freezing temperatures?
By SSS
Published . Updated .
- Nozzle210–240 °C(410–464 °F)
- Bed80–100 °C(176–212 °F)
- Speed—
- Dry—
- Density1.05 g/cm³
Source: PP - Fiberlogy · Last checked 23 October 2026
Ranked filaments
| Rank | Filament | Material | Nozzle | Bed | Datasheet | Buy |
|---|---|---|---|---|---|---|
| 1 | Fiberlogy · PP | PP | 210–240 °C410–464 °F | 80–100 °C176–212 °F | — | |
Product page read 26 October 2026 lists a glass transition of -31 °C (88 °F), a notched Charpy impact of 30 kJ/m² at 23 °C (73 °F) under ISO 179, heat-deflection of 51 °C (124 °F) at 0.45 MPa under ISO 75, and Vicat 110 °C (230 °F) under ISO 306. No impact figure below 0 °C (32 °F) is on that page. | ||||||
| 2 | Polymaker · Polylite PLA | PLA | 190–230 °C374–446 °F | 25–60 °C77–140 °F | Datasheet | |
Heat dataset, checked 21 October 2026, lists glass transition 61 °C (142 °F), HDT 60 °C (140 °F) at 0.45 MPa and 58 °C (136 °F) at 1.8 MPa, ISO 75. Nozzle 190–230 °C (374–446 °F) and bed 25–60 °C (77–140 °F). No cold-impact figure is stored. | ||||||
| 3 | Polymaker · Polylite PETG | PETG | 220–250 °C428–482 °F | 70–90 °C158–194 °F | Datasheet | |
Heat dataset, checked 21 October 2026, lists glass transition 81 °C (178 °F), HDT 78 °C (172 °F) at 0.45 MPa and 75 °C (167 °F) at 1.8 MPa, ISO 75. Nozzle 220–250 °C (428–482 °F) and bed 70–90 °C (158–194 °F). No cold-impact figure is stored. | ||||||
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The cited sheets publish warm softening and, in one case, a room-temperature impact. They do not publish a freezer impact. Brittle filament, outdoor use, and flexible filament 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, 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 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 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.
Pros and cons
Pros
- The only sub-zero figure on the pages read for this question is Fiberlogy's glass transition, and it stays labeled as glass transition.
- The Charpy temperature is written next to the Charpy number, so 23 °C (73 °F) cannot be slid down to a freezer.
Cons
- No datasheet in this set gives a cold-impact figure.
- The highest-scored comments is about unsticking a print with IPA and ice, not about a part that lives in a freezer.
Printer considerations
- Glass transition is the temperature where the plastic changes between glassy and rubbery. It is not a Charpy test, and it is not a minimum service temperature.
- Fiberlogy's impact number is at 23 °C (73 °F). PolyLite PLA and PolyLite PETG do not list an impact temperature at all in the heat dataset.
Sources & notes
Published . Updated .
- Fiberlogy PP product page manufacturer
- Polymaker PolyLite PLA technical data sheet datasheet
- Polymaker PolyLite PETG technical data sheet datasheet
- a Reddit thread in r/FixMyPrint reddit
- a Reddit thread in r/prusa3d reddit
- a Reddit thread in r/3Dprinting reddit
- a Reddit thread in r/FixMyPrint reddit
- a Reddit thread in r/3Dprinting reddit
Related questions
- What is the best filament for outdoor use?Outdoor
- What is the best flexible filament, and how do I print TPU?Flexible
- Why is my filament brittle and snapping?Drying
Related data
- Cheapest filament per kg
- Cheapest PLA per kg
- Will my dryer cover this filament?
- Drying dataset
- How long to dry PETG
- PLA drying temperature and time
- PETG drying temperature and time
Questions
Does a glass transition of -31 °C (88 °F) mean the part survives a freezer?
It means Fiberlogy published -31 °C (88 °F) as the glass transition. The impact number on that same page is 30 kJ/m² at 23 °C (73 °F). Brittle filament is about spools that snap. Outdoor filament is sun and weather. Flexible filament is the bend page. None of those is a freezer impact test.
Is PLA's 61 °C (142 °F) a cold rating?
No. 61 °C (142 °F) is PolyLite PLA's glass transition, a warm-softening figure. PolyLite PETG's glass transition on the same dataset is 81 °C (178 °F). A higher warm-softening temperature is not evidence about freezing.