Copper-bismuth casting alloys

A casting alloy consisting essentially of about 1.5 to 5.5% tin, up to about 25% zinc, about 0.1 to 7% bismuth, about 11 to 27% nickel, about 0.1 to 1% mischmetal, up to 1% manganese and the balance copper and incidental impurities.

A casting alloy consisting essentially of about 2 to 6% tin, about 2 to 7% bismuth, about 7-17% zinc, about 0.4% iron, about 0.25% antimony, about 0.8-1% nickel, about 0.1 to 2% mischmetal or its rare earth equivalent and about 75-82% copper and incidental impurities.

A casting alloy consisting essentially of about 0.1 to 6% silicon, about 0.1 to 1% bismuth, about 12 to 16% zinc, about 0.5 to 0.8% aluminum, about 0.1 to 1% mischmetal or its rare earth equivalent, at least 79% copper and incidental impurities.

A casting alloy consisting essentially of at least 78% copper, about 0.1 to 0.5% bismuth, about 0.25 to 5% nickel, about 0.5 to 5.5% iron, about 8.5 to 11% aluminum, about 0.5 to 3.5% manganese, about 0 to 0.25% silicon, about 0 to 0.5% zinc, about 0 to 0.10% tin and about 0.1 to 2% mischmetal or its rare earth equivalent.

A casting alloy consisting essentially of about 6 to 20% tin, about 0.1 to 7% bismuth, about 0.25 to 5% zinc, about 0.1 to 0.5% iron, about 0.25 to 0.8% antimony, about 0.1 to 4% nickel, about 0.05% sulfur, about 0.05 to 1% phosphorus, about 0.1 to 2% mischmetal or its rare earth equivalent, and about 68 to 90% copper and incidental impurities.