Titanium is a highly corrosion-resistant metal because it generates a protective oxide layer on its surface. This oxide layer makes titanium highly resistant to rust, even in the presence of moisture and oxygen.
Actually, titanium is one of the most corrosion-resistant metals available, and it can resist rust and other forms of corrosion for decades or even centuries in many environments. However, in certain highly corrosive environments, such as those containing strong acids or chlorides, titanium may corrode or rust over time.
The rate at which titanium rusts or corrodes depends on various factors, including the specific environment and the presence of any impurities or defects in the metal. However, titanium is generally highly resistant to rust and corrosion and can maintain its appearance and properties over long periods.