Nickel based casting alloy

A nickel-chromium-niobium-manganese-beryllium alloy having a solidus temperature below about 1,090.degree. C., an ultimate tensile strength in excess of about 80,000 psi, a 0.2 percent offset tensile yield strength in excess of about 50,000 psi, and a coefficient of thermal expansion in the range of from about 13.0.times.10.sup.-6 in/in/.degree.C. to about 15.0.times.10.sup.-6 in/in/.degree.C., and consisting essentially of (by weight percent):

• from about 52 to 84 percent nickel, from about 10 to 25 percent chromium, from about 3 to 10 percent niobium, from about 3 to 8 percent manganese, and from about 0.5 to 2.0 percent beryllium.

An alloy suitable for use in the gypsum bonded investment casting of dental prosthetics and jewelry consisting essentially of (by weight percent):

• from about 52 to 84 percent nickel, from about 10 to 25 percent chromium, from about 3 to 10 percent niobium, from about 3 to 8 percentmanganese, and from about 0.5 to 2.0 percent beryllium, said alloy exhibiting a solidus temperature between about 1,050.degree. C. and about 1,070.degree. C.

Dental work containing dental porcelain fused to a metal casting, said casting consisting of (by weight percent):

• an alloy consisting essentially of about 65 to 80 percent nickel, about 10 to 25 percent chromium, about 0.5 to 2.0 percent beryllium, about 3 to 8 percent manganese, and about 3 to 10 percent niobium.