At a glance
Ratings at 20 °C.
- Rated A, very good resistance
- PTFE, PVC Rigid, FEP, ECTFE/ETFE (4)
- Rated B, good resistance
- none (0)
- Rated C, limited resistance
- Viton (FPM), PMP (2)
- Rated D, not resistant
- HDPE, PP, PVDF, EPDM, NBR, SS 316, SS 304, Aluminium, LDPE, Nylon (PA), Acetal (POM), Polycarbonate, Polystyrene, Polysulfone, PETG, SAN (16)
- No data in the source
- Silicone, PVC Flexible
- Rated lower at 50 °C than at 20 °C
- PTFE (A → B), PVC Rigid (A → B), FEP (A → B), ECTFE/ETFE (A → C), PMP (C → D)
Rating profile by material family
Effect of temperature, 20 °C to 50 °C
Substance
- CAS number
- 7782-41-4
- Formula
- F2
- Hazard symbols in the source
- O (oxidising), T+ (very toxic), C (corrosive) (pre-GHS European symbols; check the current safety data sheet)
- Name in the source (German)
- Fluor
Resistance table
| Material | 20 °C | 50 °C | Remark |
|---|---|---|---|
| Thermoplastics | |||
| HDPE | D | D | |
| LDPE | D | D | |
| PP | D | D | |
| PVC Rigid | A | B | |
| PMP | C | D | |
| Polystyrene | D | D | |
| SAN | D | D | |
| Polycarbonate | D | D | |
| PETG | D | D | |
| Acetal (POM) | D | D | |
| Nylon (PA) | D | D | |
| Polysulfone | D | D | |
| Fluoropolymers | |||
| PTFE | A | B | |
| FEP | A | B | |
| PVDF | D | D | |
| ECTFE/ETFE | A | C | |
| Elastomers | |||
| EPDM | D | D | |
| Viton (FPM) | C | – | |
| NBR | D | D | |
| Metals | |||
| SS 316 | D* | – | |
| SS 304 | D* | – | |
| Aluminium | D | D | |
* estimated rating, given in the source without a temperature
Not rated in the source, so not in the table: PVC Flexible, Silicone
Rating scale
- A very good resistance
- B good resistance
- C limited resistance
- D not resistant
- – no data
- K no general statement possible
A rating marked * is an estimate in the source, not a test result. An estimate is given as one value without a temperature.
Frequently Asked Questions
Which materials resist Fluorine at high concentrations?
The materials with an A rating (resistant) for Fluorine at 20 °C are: PTFE, PVC Rigid, FEP, ECTFE/ETFE. These can generally be used in direct contact.
Which materials should be avoided with Fluorine?
Materials rated D (not resistant) for Fluorine are: HDPE, PP, PVDF, EPDM, NBR, SS 316, SS 304, Aluminium. These should not be used in contact with Fluorine.
Does temperature affect chemical resistance to Fluorine?
Yes. 5 of 19 tested materials show a worse rating at 50 °C than at 20 °C for Fluorine. Materials affected include: PTFE, PVC Rigid, FEP, ECTFE/ETFE, PMP.
Is PTFE safe for Fluorine?
PTFE is rated A for Fluorine at 20 °C (B at 50 °C). A rating of A means resistant, B means limited resistance, C means partly resistant, and D means not resistant.
About this data
The ratings come from the chemical resistance list published by Bürkle GmbH, which compiled them from raw-material manufacturers’ data. They describe laboratory tests on the raw material at 20 °C and 50 °C.
A finished part also sees pressure, mechanical stress, welds and mixtures that a laboratory test does not. Treat the rating as a first filter and test under your own conditions before relying on it.
Chemicals with a similar resistance profile
Same 20 °C rating on the share of materials shown.