Sheeny Copper Sheet
Copper sheet and strip are fabricated from copper which is melted and cast into large copper cakes 10 in. thick, 40 in. wide and 40 ft. long (about 250 mm x 1 m x 12 m). These cakes weigh about 25,000 pounds and have a purity rate of 99.5%. A cake is then rolled into the familiar sheets used in a variety of applications. In Canada architectural copper is covered by ASTM Specification B370, Copper Sheet and Strip for Building Construction. Some of the other copper alloys commonly used are covered by different ASTM standards; contact the CCBDA for guidance on them.

The primary source for copper sheet in Canada is from mills in the U.S. with lesser amounts coming from Europe and other countries. Material from the United States is known to be fabricated from recycled copper, where typically 95% of the copper feed material has been used in some form before.

When other metals are added to molten copper, alloys are formed with a broad range of properties and finishes. The most recognizable alloys are the common brasses (copper & zinc) and bronzes (copper & tin). The alloys include nickel silvers which have a silvery appearance with a tinge of yellow.