Rating
| Concentration | 20 °C | 50 °C | Remark |
|---|---|---|---|
| 1-6 % | A | A | |
| 20 % | A | A | |
| 40 % | A | A | |
| 60 % | A | A | |
| 80 % | A | A | |
| 95 % | A | A | |
| fuming | D | D |
Material comparison at 20 °C
Resistance overview
The resistance of PVDF to Sulfuric Acid is concentration-dependent. Across the 7 tested concentrations (1-6 %, 20 %, 40 %, 60 %, 80 %, 95 %, fuming), the 20 °C rating ranges from A at lower concentrations to D at higher ones. This means engineers must verify which concentration their process actually involves before relying on a single rating. 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
Sulfuric Acid is commonly encountered in chemical processing and metal finishing. PVDF (Polyvinylidene fluoride) is a fluoropolymer typically used for seals, gaskets, valve seats and lined equipment. Because Sulfuric Acid is classified as corrosive, the choice of containment material is especially critical to prevent leaks, equipment damage, and safety hazards.
Practical recommendation
PVDF can be used with confidence for Sulfuric Acid containment and handling. The A rating indicates that the material shows no significant change in weight, dimensions, or mechanical properties after prolonged contact under test conditions. This holds true at both 20 °C and 50 °C, giving a good safety margin for typical process environments.
Did you know?
Temperature is often the deciding factor when selecting materials for Sulfuric Acid: even materials rated A at 20 °C may lose performance at elevated temperatures.
Materials rated A or B at 20 °C
Based on the row for 95 %, 20 °C.
- Thermoplastics
- PVC Rigid B, PMP B
- Fluoropolymers
- PTFE A, FEP A, ECTFE/ETFE A
- Elastomers
- Viton (FPM) A
- Metals
- SS 316 A, SS 304 A
About PVDF
PVDF resists acids, halogens and hydrocarbons. Strong bases, amines, ketones and esters attack it. Service temperature is up to about 150 °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.