Essentially non-precious stainless dental alloy

Details Essentially non-precious stainless dental alloy Essentially non-precious stainless dental alloy

1979-10-25

1981-03-10

Dean, R.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75171, C22C 1907

Patent

active

042551900

ABSTRACT:
The present invention provides an essentially 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 2650.degree. F. In its broadest aspect the alloy consists of cobalt 40 to 60%, chromium 25 tp 32%, tungsten 7 to 15%, ruthenium 1 to 5%, gallium 1 to 5%, niobium 0.5 to 2%, copper 0.5 to 2%, tantalum 0.5 to 1%, silicon 0.5 to 1%, iron 0.5 to 1%. While ruthenium is of the platinum group of elements, it is included in such a small amount as to make the alloy essentially of non-precious stainless metals.

REFERENCES:
patent: 3134670 (1964-05-01), Prosen

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