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Arsenical bronze
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<p>Arsenical bronze is an <a href="/facts/Alloy/I7w7WQWR">alloy</a> in which <a href="/facts/Arsenic/k1c4f44D">arsenic</a>, as opposed to or in addition to <a href="/facts/Tin/obW9mqc3">tin</a> or other constituent <a href="/facts/Metals/PT8hNX6R">metals</a>, is combined with <a href="/facts/Copper/I8PEE8oX">copper</a> to make <a href="/facts/Bronze/YCYCVIKt">bronze</a>. The use of arsenic with copper, either as the secondary constituent or with another component such as tin, results in a stronger final product and better <a href="/facts/Casting/cFJ0hPuU">casting</a> behavior. </p><p>Copper ore is often naturally contaminated with arsenic; hence, the term "arsenical bronze" when used in <a href="/facts/Archaeology/K3Q5P38R">archaeology</a> is typically only applied to alloys with an arsenic content higher than 1% by weight, in order to distinguish it from potentially accidental additions of arsenic. </p>