Common metals and their alloys, namely, [ hardenable alloys, namely, light metals, namely, aluminum, magnesium, and titanium, aluminum alloys, steel, ] copper alloys, copper-zinc-aluminum alloys, copper-tin-zinc alloys, copper-nickel-tin alloys, copper-tin alloys, copper-zinc alloys, copper-nickel-zinc alloys, copper-nickel-zinc-lead alloys, copper-nickel-silicon alloys, copper-iron alloys, bronze, [ German silver, German silver containing lead, ] brass, lead-free brass all in the form of bla...