As a materials science expert with a focus on corrosion resistance, I can tell you that titanium is known for its exceptional resistance to corrosion. It does not rust in the traditional sense that iron does because it forms a stable, protective oxide layer on its surface when exposed to oxygen. This layer prevents further corrosion. However, under certain extreme conditions, such as when exposed to highly corrosive substances or in a highly acidic environment, titanium can undergo a form of corrosion. But this is not common and requires specific conditions to occur.

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Titanium is a very reactive metal that shows remarkable corrosion resistance in oxidizing acid environments by virtue of a passive oxide film. ... While titanium is resistant to these media, it is not immune and can be susceptible to pitting and crevice attack at elevated temperatures.read more >>