A Non-Ferrous Metal is any metal that does not contain iron. Common Non-Ferrous Metals are; Aluminum, Copper, Nickel, Tin, Lead, Zinc, and the alloy Brass.
Because aluminum and certain of its alloys are strengthened beyond their basic strengths only by strain hardening, they are non-heat-treatable. Nearly all of the foil presently produced is rolled from non-heat-treatable alloys, which are given H number temper designations for the various specific strain-hardened conditions in which they are made. For example, common foil availability is alloy 1145-H19; the H1 means strain hardened, and the next digit indicates the degree of hardening, the 9 meaning full hard.
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