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Publication Open Access The potential of copper alloy as alternative material for post and core applications.(2014-09) Somchai Urapepon; สมชาย อุรพีพล; Usanee Peungpaiboon; อุษณีย์ ปึงไพบูลย์; Somchai Urapepon; สมชาย อุรพีพล; Mahidol University. Faculty of Dentistry. Department of ProsthodonticsObjective: The purpose of this study was to investigate the use of copper alloy for dental application. Materials and methods: Three types of copper alloy used in Thailand were selected (Cu-Al, Cu-Al-Ni and Cu-Zn). Ingots of these three alloys....2% proof stress, percentage of elongation after fracture and modulus of elasticity were calculated from tensile stress-strain curves. Six specimens for each test were made from each alloy. Results: The percentage of elongation of Cu-Al, Cu-Al-Ni and CuPublication Metadata only Properties of experimental copper-aluminiumnickel alloys for dental post-and-core applications(2014-01-01) Apiwat Rittapai; Somchai Urapepon; Julathep Kajornchaiyakul; Choltacha Harniratisai; Mahidol University; National Metal and Materials Technology Center (MTEC)(595.9 ± 14.2 MPa) was shown in the Cu-12Al-4Ni alloy. The tensile strength was increased as the both elements increased. Alloys with 3-6 wt% Al exhibited a small amount of 0.2% proof strength. Accordingly, the Cu-9Al-2Ni and Cu-9Al-4Ni alloys not only... copper alloys with variants of 3, 6, 9, 12 wt% Al and 0, 2, 4, 6 wt% Ni were prepared and casted. Their properties were tested and evaluated. The data of thermal, physical, and mechanical properties were analyzed using the two-way ANOVA and Tukey's test