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The International Journal of Prosthodontics
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Int J Prosthodont 28 (2015), No. 4     28. July 2015
Int J Prosthodont 28 (2015), No. 4  (28.07.2015)

Page 396-398, doi:10.11607/ijp.4298, PubMed:26218024


Preliminary Evaluation of Mechanical Properties of Co-Cr Alloys Fabricated by Three New Manufacturing Processes
Jang, Seong-Ho / Lee, Dae-Ho / Ha, Jung-Yun / Hanawa, Takao / Kim, Kyo-Han / Kwon, Tae-Yub
A preliminary tensile test was performed to evaluate the mechanical properties of cobalt-chromium (Co-Cr) alloys fabricated by three new manufacturing processes: metal milling, milling for soft metal, and rapid prototyping (n = 6). For comparison, the three alloy materials were also used to fabricate specimens by a casting procedure. In all groups tested, the proof strength and elongation were over 500 MPa and 2%, respectively. The milled soft alloy in particular showed a substantially greater elongation, whereas the alloy fabricated by rapid prototyping exhibited a higher proof strength.