BME 83 HW5

BME 83 HW5 - BME HW#5 1) American Society for Testing and...

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BME HW#5 Nigel Chou 1) American Society for Testing and Materials. a) Stainless steel A484/A484M-06b -for Stainless Steel Bars, Billets, and Forgings A999/A999M-04a - for Alloy and Stainless Steel Pipe A1016/A1016M-04a - for Ferritic Alloy steel, Austenitic Alloy steel, and Stainless Steel Tubes b) Cobalt Chromium F1377-98a - for Cobalt-28 Chromium-6 Molybdenum Powder for Coating of Orthopedic Implants WK13592 - for Wrought Cobalt-20 Chromium-15 Tungsten-10 Nickel Alloy Surgical Fixation Wire F90-01 – Standard Specification for Wrought Cobalt-20 Chromium-15 Tungsten-10 Nickel Alloy for Surgical Implant Applications c) Titanium B863-06a – for Titanium Alloy Wire B862-06b – for Titanium Alloy Welded Pipe B348-06a for Titanium Alloy Bars and Billets WK7227 Alpha Plus Beta Titanium Alloy Forgings for Surgical implants d) Implants F2068-03 – for Femoral Prostheses—Metallic implants F1357-99(2004) – for Articulating Total Wrist implants 2) Addition of alloying elements lowers the eutectoid temperature enough such that the steel is still within the austenite region of the phase diagram at room temperature. 3) Fine grain size – orthopedic implants must have sufficient hardness and strength. Since dislocation motion is hindered by grain boundaries, and a fine grain size increases the grain boundary area per unit volume, this helps to increase the hardness and stiffness of the implant. Reduced inclusion and carbide content – excessive inclusion and carbide impairs the formation of surface oxide and reduces corrosion resistance.
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This note was uploaded on 04/09/2008 for the course BME 83 taught by Professor Reichert during the Spring '07 term at Duke.

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BME 83 HW5 - BME HW#5 1) American Society for Testing and...

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