10/1/2006
Help for Choosing From Global Material Suppliers - Medical Design Magazine Implant-grade alloy well suited to injection molding
Implant-grade alloy well suited
to injection molding
A special metal-injection technology (MIT) version of F75, an implant-grade
alloy, is suitable for high volume manufacturing and is less costly than
materials such as titanium. FlowMet LLC, DeLand, Fla., (www.flomet.com) developed the material
and modified its MIT feed-stock, injection molding, de-binding, and sintering
parameters to make F75 components such as hip and knee implants. According to
the company, testing showed such parts meet or exceed specifications of the
ASTM standard, F75-01 Standard Specification for Cobalt-28 Chromium-6
Molybdenum Alloy Castings and Casting Alloy for Surgical Implants (UNS R30075).
Also, F75 MIM properties compare favorably with medical grade titanium,
typically Ti-6%V-4%Al.
Challenge:
To develop a coining process that would produce consistent dimensions throughout the length of the curved blade thus assuring blade interference for cutting efficacy.
Solution:
Use of controls, including SPC, to step up and maintain coining and monitor of the coining process.
