Group 12 element metals still melt easily and, in addition, have unusually low boiling points. Gold has atoms with one less 6s electron than mercury. Those electrons are more easily removed and are shared between the gold atoms forming relatively strong metallic bonds. Zinc, cadmium and mercury form a large range of alloys. Among the zinc containing ones, brass is an alloy of zinc and copper. Other metals long known to form binary alloys with zinc are aluminium, antimony, bismuth, gold, iron, lead, mercury, silver, tin, magnesium, cobalt, nickel, tellurium and sodium. While neither zinc nor zirconium are ferromagnetic, their alloy exhibits ferromagnetism
Ampco Metal into the production of aluminium bronze alloys as sand castings, forgings and centrifugal castings. The company was renamed "AMPCO METAL" in 1930, by which time it had built itself a reputation as a reliable producer of high quality alloys. The Second World War strongly increased the demand for copper-based alloys and industrial bronzes, especially in the field of aeronautics. By 1944, manufacturing operations had grown from 100 to 2,500 employees, and every American airplane carried AMPCO METAL parts somewhere in its structure—in its engines, landing gear, propellers or airframe. In the marine environment, AMPCO METAL propellers were manufactured for landing