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Influence of Oxygen Content on the Mechanical Properties of Titanium-35Niobium-7Zirconium-5Tantalum Beta Titanium Alloy
Jablokov, VR
Senior Engineer, ATI Allvac, an Allegheny Technologies company, NC

Murray, NGD
Research Engineer, Stryker Orthopaedics, NJ

Rack, HJ
Professor of Materials Science and Engineering, Clemson University, SC

Freese, HL
Business Development Manager, ATI Allvac, an Allegheny Technologies company, NC

Pages: 12    Published: Jan 2006

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Source: STP1471-EB

Abstract

Titanium-35Niobium-7Zirconium-5Tantalum beta titanium alloy (also known as TiOsteum beta titanium alloy) is a new metallic biomaterial that was designed to have outstanding osseointegratabilty, good mechanical strength, improved ductility, very low elastic modulus, and good hot and cold workability [1]. In this study, mechanical property data are presented from several TiOsteum alloy production lots with ingot oxygen contents ranging from 0.05 to 0.68%. Additionally, mill annealed mechanical property data collected over the last 10 to 15 years for the more common alpha, alpha-beta, and beta titanium alloys are presented as a function of oxygen content and compared to TiOsteum alloy. The influence of oxygen as an interstitial strengthening element is well established in titanium alloys. This study examines this effect over a broad range of oxygen values, and has significance for the application of the new TiOsteum alloy and other beta titanium alloys being considered for use in medical and surgical devices.

Keywords:
metals (for surgical implants), orthopedic medical devices, titanium alloys, beta titanium alloys, alpha-beta titanium alloys

Paper ID: STP37546S
Committee/Subcommittee: F04.02
DOI: 10.1520/STP37546S
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