| Industrial Applications | |||
|---|---|---|---|
| Titanium has found its niche in many industrial applications where corrosion resistance is required. Below we have listed some of the common applications of titanium in corrosion resistant service: | |||
| Chlorine Chemicals | |||
| The corrosion resistance of titanium in chlorine gas and
chlorine containing solutions is the basis for a large amount of titanium
installations.
Titanium is widely used in chloro-alkali cells as anode, cathodes, bleaching equipment for pulp and paper, heat exchangers, piping, vessels, and pumps for the manufacture of other intermediate organic chemicals. View table of corrosion resistance of titanium to chlorides. |
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| Fresh and Sea Water | ||||||
|---|---|---|---|---|---|---|
| Titanium resists all forms of corrosive attack in fresh and sea water to temperatures of 500ºF (260ºC). Titanium tubing has been used in surface condensers successfully for more and 15 years in polluted sea water with no sign of corrosion. Titanium has provided over thirty years of trouble-free sea water service for the chemical, oil refining and desalination industries. | ||||||
| Nitric Acid | ||||||
| Titanium is resistant to highly oxidizing acids over a wide range of temperatures and concentrations. Titanium has been extensively used in the handling and production of nitric acid. Titanium offers excellent resistance over a full concentration range at temperatures below boiling. Table 4 shows titanium’s resistance to nitric acid vapors produced by boiling 70% azeotrope. | ||||||
| ASTM Designation | Corrosion Rate (mpy) | |||||
| Titanium Grade 2 | 2.0 | |||||
| Titanium Grade 12 | 0.8 | |||||
| Titanium Grade 7 | .08 | |||||
| Red Fuming Nitric Acid | ||||||
| Although titanium has an excellent corrosion resistance to nitric acid over a wide range of temperatures and concentrations, it should not be used in applications with red fuming nitric acid. A dangerous pyrophoric reaction product can be produced. | ||||||
| Phosphoric Acid | ||||||
| Unalloyed titanium is resistant to phosphoric acid up to 30% concentration at room temperature. The resistance extends to about 10% pure acid at 140ºF. The table below shows unalloyed titanium's resistance to phosphoric acid. | ||||||
| Concentration (%) | Temperature (ºC) | Corrosion Rate (mpy) | ||||
| 2 | 100 | 5 | ||||
| 10 | 50 | 5 | ||||
| 20 | 30 | 5 | ||||
| 30 | 20 | 5 | ||||
TITAN Metal Fabricators | ||||||