Titanium is immune to corrosive attack by saltwater or marine atmospheres. It also exhibits exceptional resistance to a broad range of Acids,Alkalis,Halogens,Natural Waters
,Corrosive Gases,Reducing Atmospheres,Organic Media.
Titanium develops a thin, tenacious and highly protective surface oxide film. The surface oxide of titanium will, if scratched or damaged, immediately reheal and restore itself in the presence of air or even very small amounts of water. Under many otherwise corrosive conditions Passivation with inhibitors is possible.
The corrosion resistance of titanium can be enhanced in reducing environments by alloying with certain noble metals such as palladium or ruthenium, with molybdenum and nickle, or by impressed anodic potentials(anodic protection)
Titanium alloys are essentially immune to chloride pitting and intergranular attack and are highly resistant to crevice corrosion and stress corrosion cracking.Titanium is immune to microbiologically influenced corrosion (MIC).
Commercially pure titanium and the simple alpha alloys have simple, single phase structures and do not suffer from corrosion caused by secondary phase precipitates in welds, heat-affected areas or cast structures.