Melt together under powdered charcoal, 100 parts of pure copper, with 20 parts of tin, and unite the two metals by frequently stirring the mass. Product very fine.
Copper 3 parts; tin 1 part; as above. Some of the finest church bells in the world have this composition.
Copper 2 parts: tin 1 part; as above.—4. Copper 72 parts; tin 26½ parts; iron 1½ parts. The bells of small clocks or pendules are made of this alloy in Paris.