Titanium is highly resistant to chloride-containing media, practically all salt solutions, seawater, a range of acids, organic and inorganic chemicals and gases. The high environmental resistance is primarily based on a very thin, tenacious and highly protective surface oxide film. The oxide film provides high resistance to erosion in high velocity process streams.
This corrosion and erosion resistance makes titanium a preferred heat transfer material for tube/shell heat exchangers since it permits the use of thin heat transfer walls and high fluid flow rates. In addition, titanium has only half the weight of steel. It is non-magnetic and characterized by a high melting point, high strength-to-weight ratio and a low modulus of elasticity.