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Best Answer: Well wire hangers can be made out of platinum, silver, iron, copper, aluminum and gold because of their ductility; and it is only from these and certain of their alloys with other metals, principally brass and bronze. Source(s):
Today's braces are made of many different materials. Metal brackets are typically made of stainless steel. Clear braces are made of either porcelain or plastic. Aligners (Invisalign) are made out of polypropylene plastic. Modern wires are made from stainless steel, nickel titanium, molybdinum, copper, and traces of many other rare metals.