"Brass is an alloy of copper and zinc, in proportions which can be varied to achieve varying mechanical and electrical properties. It is a substitutional alloy: ...
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atoms of the two constituents may replace each other within the same crystal structure.
It is simlilar to Bronze, another alloy containing copper, with tin included instead of zinc; both bronze and brass may include small proportions of a range of other elements including arsenic, lead, phosphorus, aluminum, manganese, and silicon. The distinction between the two alloys is largely historical, and modern practice in museums and archaeology increasingly avoids both terms for historical objects in favour of the more general "copper alloy"." - (en.wikipedia.org 11.10.2019)
