Mechanical and biological properties of newly designed Ti-Nb-Ta-Zr system alloy

Mitsuo Niinomi, Daisuke Kuroda, Kei Ichi Fukunaga, Hisao Fukui, Akihiro Suzuki, Jiro Hasegawa

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


β-type titanium alloy, Ti-29Nb-13Ta-4.6Zr, which composed of non-toxic elements with low modulus of elasticity is newly developed for biomedical applications. Forging, cold rolling and heat treatments were conducted in order to achieve excellent mechanical performance. Also, the tensile tests, measurements of modulus of elasticity and evaluation of cyto-toxicity were carried out in order to investigate the basic mechanical and biological properties of the alloy. The balance of strength and ductility of the alloy is equivalent or greater, and the modulus of elasticity and the cyto-toxicity are equivalent or lower as compared with those of conventional biomedical titanium alloys. Newly developed β-type titanium alloy, Ti-29Nb-13Ta-4.6Zr, is, therefore, judged to be suitable for biomedical applications.

Original languageEnglish
Pages (from-to)598-603
Number of pages6
JournalInternational Journal of Materials and Product Technology
Issue numberSPEC ISS. VOL.2
Publication statusPublished - 2001
Externally publishedYes


  • Biomaterials
  • Cyto-toxicity
  • Mechanical properties
  • Non-toxic elements
  • β-type titanium alloy

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering


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