M.F. Khalil, BDS, MScD.PhD;*
H.Mohammed Al-Tahawi, DDS, MScD, PhD;*
Chiayi Shen, BS, MSc, PhD**
* Depart­ment of Prosthetic Dental Sciences, King Saud University, P.O. Box 60169, Riyadh 11545, Saudi Arabia
** University of Florida, Gainnesviile, Fl, USA

Four types of alloys were investigated to determine the feasibility of developing a non-noble casting alloy based on the copper-nickel system. Emphasis was given to the evaluation of its mechanical properties, which included tensile properties and hardness. Tensile properties included yield strength, ultimate tensife strength, modulus of elasticity and ductility,

As demonstrated in this study, thefouralfoys, with the exception of alloy4, possessed mechanical prop­erties of intermediate values between those of gold and base-metal alloys.

Saudi Dental Journal 1991;3(2):46-52.