The best titanium stocks to buy include titanium alloy manufacturers for industrial applications and chemical manufacturers. The end use may be airframes that are hundreds of feet long. Titanium is becoming increasingly important to aerospace applications. Chemours is the world's largest producer of titanium dioxide, with over 1.25 million metric tons of annual manufacturing capacity that serves over 800 customers. That represents 22% of global demand -- and production capacity will increase by at least 200,000 metric tons in the coming years after an expansion project in Mexico comes online in the next several years.