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Technical Information
Refractory Metals Corrosion Resistance Guide |
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| Acetic acid, 50%, boiling |
1 |
1 |
1 |
1 |
1,2 |
1 |
1 |
1 |
1 |
| Aluminum chloride, 5% |
1 |
1 |
1 |
1 |
1,2 |
3 |
1 |
1 |
4 |
| Ammonium chloride, 50% |
1 |
1 |
1 |
4 |
1,2 |
1# |
1 |
4 |
1 |
| Ammonium sulfate, saturated, boiling |
1 |
4 |
2 |
1 |
1,2 |
1# |
1 |
4 |
4 |
| Bromine, dry |
1 |
4 |
2 |
1 |
1,2 |
1# |
1 |
4 |
4 |
| Bromine, water |
1, 2 |
1 |
1 |
3 |
3 |
3 |
1 |
4 |
4 |
| Caustic soda |
1 |
3 |
1 |
1 |
1 |
1 |
3 |
4 |
4 |
| Chlorine gas, dry, 25°C |
1 |
1 |
1 |
1 |
1 |
3 |
1 |
3 |
2 |
| Chlorine gas, moist, 25°C |
3 |
1 |
1 |
3 |
4 |
3 |
1 |
1 |
3 |
| Chlorine gas, moist, 100°C |
3 |
1 |
3 |
3 |
3 |
3 |
1 |
1 |
3 |
Chlorosulfonic acid, 10%
|
3 |
4 |
1 |
1 |
1,2 |
3 |
1 |
4 |
4 |
| Chromium-plating bath |
1, 2 |
4 |
4 |
4 |
3 |
1,2 |
1 |
4 |
4 |
| Ferric chloride, 5% agitated |
3 |
1 |
1 |
3 |
4 |
3 |
1 |
1 |
3 |
| Flue gas |
1, 2 |
4 |
1 |
2 |
4 |
1,2 |
1 |
4 |
4 |
| Flourine |
2, 3 |
3 |
4 |
4 |
1 |
3 |
3 |
4 |
4 |
Hydrochloric acid, 38°C
(all concentrations) |
3 |
2 |
1 |
1 |
4 |
3 |
1 |
3 |
1 |
| Hydrogen peroxide, 25°C |
1 |
2 |
1 |
2 |
1,2 |
1* |
1 |
1 |
1 |
| Lead, molten |
4 |
4 |
1 |
1 |
3 |
3 |
1 |
4 |
4 |
| Mine water, acid |
1 |
4 |
1 |
1 |
3 |
1# |
1 |
4 |
4 |
| Nitric acid, 5%, 25°C |
1 |
1 |
1 |
3 |
3 |
1 |
1 |
1 |
1 |
| Nitric acid, conc., boiling |
1 |
1 |
3 |
3 |
4 |
2 |
1 |
1 |
1 |
| Potassium cyanide |
1 |
4 |
1 |
1 |
1,2 |
1 |
1 |
4 |
4 |
| Sodium chloride, sat., boiling |
1 |
4 |
1 |
1 |
1 |
1# |
1 |
1 |
4 |
| Sodium hypochlorite, 5%, 25°C |
2 |
3 |
1 |
3 |
3 |
1# |
4 |
2 |
2 |
| Sulfur dioxide, moist 25°C |
1 |
1 |
1 |
3 |
3 |
1 |
1 |
1 |
4 |
| Sulfuric acid, 5%, 25°C |
1 |
1 |
1 |
1 |
1,2 |
2 |
1 |
2 |
1 |
| Sulfuric acid, 50%, boiling |
2, 3 |
3 |
3 |
1 |
3 |
3 |
1 |
3 |
1 |
# Subject to pitting at air line or when allowed to dry
* Attack may occur when sulfuric acid is also present
1: Fully resistant
2: Some attack
3: Unsatisfactory
4: No data available
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