Ozone resistance of various materials
Ozone is a very aggressive gas, only few materials are ozone resistant. Besides that, it also matters whether it considers ozone in the gaseous phase or ozone dissolved in water. Below, you’ll find a list with the ozone resistance of various materials. The table assumes the materials are subjected to high concentrations.
| Ozone in the gaseous phase | Ozone dissolved in water | |||
| Material | Resistance | Material | Resistance | |
| ABS | Good | ABS | Average | |
| Acrylate (Lucite) | Good | Acrylate (Lucite) | Perfect | |
| Aluminium | Good (dry ozone) | Aluminium | Bad | |
| EPDM | Good | EPDM | Average | |
| Galvanized iron | Average | Galvanized iron | Bad | |
| Cast iron | Average | Cast iron | Average | |
| Glass | Perfect | Glass | Perfect | |
| Hastelloy-C ® | Perfect | Hastelloy-C ® | Perfect | |
| HDPE | Average | HDPE | Average | |
| LDPE | Bad | LDPE | Bad | |
| Monel | Bad | Monel | Bad | |
| Natural rubber | Bad | Natural rubber | Bad | |
| Nylon | bad | Nylon | Bad | |
| Polycarbonate | Perfect | Polycarbonate | Perfect | |
| PTFE | Perfect | PTFE | Perfect | |
| PVC-C | Good (turns brittle over time) | PVC-C | Perfect | |
| PVC-U | Good (turns brittle over time) | PVC-U | Perfect | |
| PVDF | Perfect | PVDF | Perfect | |
| RVS 304 | Perfect | RVS 304 | Perfect | |
| RVS 316 | Perfect | RVS 316 | Perfect | |
| Silicone | Perfect | Silicone | Perfect | |
| Titanium | Perfect | Titanium | Perfect | |
| Viton | Perfect | Viton | Perfect | |
| Perfect | Ozone doesn’t damage these materials | |||
| Good | Ozone barely damages these materials (exposure to very high ozone concentrations isn’t recommended) | |||
| Average | Ozone damages these materials within a couple weeks | |||
| Bad | Ozone damages these materials almost immediately (within days and sometimes hours) | |||
© Tol Watertechniek
Have ozone resistance tested
In some materials this degradation is visible very quickly, for example in natural rubbers. Other materials are affected much more slowly by ozone, such as the embrittlement of certain plastics.
Cracks, discoloration, hardening or even complete degradation of rubber, plastic or coatings are all examples of the effects of ozone.
We can test your materials for ozone resistance. There are various test parameters that can be tailored to your specific situation. Parameters such as:
- Ozone concentration
- Exposure duration
- Temperature
- Humidity
After an ozone resistance test you will receive a report listing the test parameters. Optionally supplemented with periodic sampling including photos and/or analyses.