Rating
| Concentration | 20 °C | 50 °C | Remark |
|---|---|---|---|
| 4 % | A | A | |
| 50 % | A | A | |
| 70 % | – | – | |
| 100 % | – | – |
Material comparison at 20 °C
Resistance overview
HDPE shows excellent resistance to Hydrofluoric Acid across all 2 tested concentrations (4 %, 50 %) at 20 °C, making it a reliable choice for storage, transfer, and handling applications involving this chemical at any of the tested strengths. The rating remains stable between 20 °C and 50 °C, which means this material can also handle moderately elevated process temperatures without additional risk.
Application context
Hydrofluoric Acid is commonly encountered in metal finishing and laboratory work. HDPE (High-density polyethylene) is a thermoplastic typically used for tanks, piping, containers and liners. Because Hydrofluoric Acid is classified as corrosive, the choice of containment material is especially critical to prevent leaks, equipment damage, and safety hazards.
Practical recommendation
No resistance data is available for HDPE in contact with Hydrofluoric Acid. Before using this combination, consult the material manufacturer or conduct independent testing.
Did you know?
In industrial practice, HDPE components exposed to Hydrofluoric Acid are typically inspected for swelling, discoloration, or loss of mechanical strength as early indicators of chemical attack.
Materials rated A or B at 20 °C
Based on the row for 70 %, 20 °C.
- Thermoplastics
- PP A, PVC Rigid A, LDPE A
- Fluoropolymers
- PTFE A, PVDF A, FEP A
About HDPE
High-density polyethylene resists most aqueous acids, alkalis and salt solutions. Strong oxidising acids, chlorinated solvents and aromatic hydrocarbons attack or swell it. Continuous service is usually limited to about 80 °C.
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.
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.