Non-precious stainless dental alloy
AssigneeNeoloy Products, Inc.
InventorEmil M. Prosen
Life of this patent
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Abstract
The present invention provides a non-precious stainless dental alloy which may be used in producing crowns, bridges, inlays, and the like. It also provides an alloy which is especially adapted for the application of low fusing opaqueing porcelain for adhesion to such dental appliances. The alloy of the present invention has a melting point approximating 2550.degree. F. In its broadest aspect the alloy consists of cobalt 49 to 59%, chromium 25 to 30%, tungsten 7 to 14%, gallium 2 to 6%, copper 1 to 3%, niobium 0.5 to 2%, silicon 0.5 to 2%, and iron 0.5 to 6%.
Claims4
A stainless dental alloy especially adapted for the adhesion of opaqueing porcelain having a fusing temperature of approximately 1800.degree. F., consisting essentially of:
- ______________________________________ Cobalt 49 to 59% Chromium 25 to 30% Tungsten 7 to 14% Gallium 2 to 6% Copper 1 to 3% Niobium 0.5 to 2% Silicon 0.5 to 2% Iron 0.5 to 6% ______________________________________
- said alloy having a melting temperature of approximately 2550.degree. F., and a linear coefficient of expansion of about 1.4.times.10.sup.-5 per .degree.C.
A stainless dental alloy consisting essentially of:
- ______________________________________ Cobalt 52% Chromium 28% Tungsten 12% Gallium 4% Copper 1% Niobium 1% Silicon 0.5% Iron 1.5% ______________________________________
Dependencies are inferred from the claim text.