Copper was alloyed with tin to produce bronze in 3000 BC, which ... copper nickel, nickel silvers, leaded copper, and beryllium copper also ... pure copper ions to migrate to starter cathodes made from pure copper foil.
A relatively new, and evolving, group of strong but lightweight sheet steels for the ... Variants are aluminium bronze and manganese bronze; the latter is better ...
yr. for foil production, but not including electrolytic copper powder. ... yr. of copper for foil production in 1968. ... yr. of beryllium copper wire.
... bronze, beryllium copper or depleted uranium. The statute gives the Attorney General the authority to exempt from the definition any projectile ...