The alloy that does not contain copper is magnalium.
Bronze and brass are copper alloys. Bronze is an alloy of copper and tin, while brass is an alloy of copper and zinc.
Duralumin is an alloy of aluminum, copper, and magnesium.
Type metal is an alloy of lead, tin, and antimony.
Magnalium is an aluminum alloy that contains magnesium but not copper.
Therefore, the answer is magnalium as it is the only option that does not contain copper.