New Low-Nickel Alloy Developed for Medical Applications

Carpenter Technology Corp. has introduced a low-nickel alloy designed for such medical applications as bone screws, bone plates, and other implanted orthopedic devices.

Developed to help prevent allergic reactions to nickel, the BioDura 108 alloy is essentially nickel-free. The nominal chemistry is chrome (21 percent), manganese (23 percent), nitrogen (1 percent), nickel (less than 0.3 percent), and iron (balance). Because of its high levels of chromium and nitrogen and its molybdenum content (0.7 percent), BioDur 108 alloy has a high resistance to corrosion.

Bars of BioDur 108 alloy will show an ultimate tensile strength of 931 MPa in the annealed state with an elongation of approximately 50 percent.

For more information, contact Carpenter Technology at (800) 654-6543.