Metallic biomaterials: Cobalt-chromium alloys

Abstract

Cobalt-chromium (CoCr) alloys have been extensively used for making various orthopedic, dental, and cardiovascular implants and devices. These alloys possess superior mechanical properties with high resistance to corrosion, wear, and fatigue. The biocompatibility and blood compatibility of these alloys have also been well demonstrated. In this chapter, the four types of CoCr alloys (ASTM F75 alloy, ASTM F799 alloy, ASTM F90 alloy, and ASTM F562 alloy) that are currently used for biomedical implants and devices are discussed. Also, the other types of CoCr alloy (ASTM F563, ASTM F1058, and Havar) that have been considered and investigated for biomedical implants and devices are discussed in this chapter. The chapter is divided into subsections based on these individual alloys.