Due to its high strength, low weight, high corrosion resistance and excellent biocompatibility, titanium is an ideal application material in medicine - especially in bone surgery. Titanium forms an extremely resistant oxidic protective layer in air, which makes it corrosion resistant in many media. Remarkable is its high strength at a relatively low density.
According to the ASTM (American Society for Testing and Materials), titanium alloys can be characterized in grades 1 to 39, of which grades 1-4 are pure titans of varying degrees of purity. Grade 4 pure titanium is the most commonly used material for dental implants. This type of titanium with increased oxygen content, in combination with cold forming, enables the highest strength values.