F75 cobalt alloy offers many properties that make it the ideal material for many applications. This material offers a high level of stiffness. The surface of this alloy can be highly polished. One of the most beneficial properties associated with F75 cobalt alloys is that they are extremely resistant to wear. F75 alloys are very strong, hard, corrosion-resistant materials. These alloys offer a melting point between 2,300 and 2,700 degrees F and a boiling point between 4,800 and 5,500 degrees F.
Many components make up the F75 alloy. This alloy is made up of a considerable amount of chromium. F75 alloy should contain between 27 and 30 percent chromium, between 5 and 7 percent molybdenum, less than 0.5 percent nickel, less than 0.75 percent iron, less than 0.35 percent carbon and less than 0.2 percent tungsten by weight. This alloy also contains less than 1 percent silicon, less than 1 percent manganese, less than 0.1 percent aluminum and less than 0.1 percent titanium, among several other materials. This alloy is balanced with cobalt; it can contain anywhere between 63 and 68 percent cobalt by weight.
The F75 alloy is specially manufactured for certain applications. Several gas turbine production companies manufacture their products out of a considerable amount of F75 alloy. Certain components in many dental implant systems are also constructed out of this alloy. Even certain components in many orthopedic implant systems are made out of this alloy. Consumers have access to F75 cobalt alloy metal hip joints and knee implants.
F75 cobalt alloy manufacturers must construct their F75 alloys to meet certain internationally-recognized minimum performance standards. ASTM International is a globally-recognized institution that outlines materials standards for materials such as the F75 cobalt alloy. F75 alloys must offer a minimum 95,000 psi, or pounds per square inch, ultimate tensile strength and 65,000 psi minimum yield tensile strength. This alloy offers less than 8 percent elongation at break. In terms of hardness on the Rockwell scale, F75 cobalt alloy is a relatively hard material offering hardness values in the range between 25 and 35 HRC, a measure of hardness on the Rockwell Hardness scale.