Rating
| Concentration | 20 °C | 50 °C | Remark |
|---|---|---|---|
| 10 % SO3 | A | C |
Material comparison at 20 °C
Resistance overview
Aluminium shows very good resistance (A) to Oleum (Fuming Sulfuric Acid) at 10 % SO3 at 20 °C, meaning the material remains essentially unaffected by this chemical under standard laboratory test conditions. However, at 50 °C the resistance rating drops, indicating that temperature must be factored into the design. For heated applications, additional testing under actual service conditions is strongly recommended.
Application context
Oleum (Fuming Sulfuric Acid) is commonly encountered in metal finishing and chemical processing. Aluminium (Aluminium) is a metal typically used for vessels, heat exchangers, fittings and structural components. Because Oleum (Fuming Sulfuric Acid) is classified as corrosive, the choice of containment material is especially critical to prevent leaks, equipment damage, and safety hazards.
Practical recommendation
Aluminium can be used with confidence for Oleum (Fuming 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. At elevated temperatures (50 °C), some reduction in resistance occurs, so periodic inspection is advisable for heated applications. Always verify performance under actual operating conditions before committing to a design.
Did you know?
The ratings shown here apply to pure Oleum (Fuming Sulfuric Acid) in contact with the base metal. In real-world applications, additives, pigments, and fillers in the material can shift resistance in either direction.
Materials rated A or B at 20 °C
Based on the row for 10 % SO3, 20 °C.
- Fluoropolymers
- PTFE A, FEP A
- Elastomers
- Viton (FPM) A
- Metals
- SS 316 A, SS 304 A
About Aluminium
Aluminium relies on a thin oxide layer. Strong acids, strong alkalis and mercury compounds destroy that layer.
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.