Made of 1000 series aluminum which is 99% pure, this aluminum offers superior formability, corrosion resistance, and electrical conductivity. It's frequently fabricated into raceways, decorative trim, and other parts where strength and hardness are not required. These temper O foil, sheets, and bars are annealed to the softest state possible, which is sometimes called “dead soft.” The foil is often used as a wrap, cover, mask, or patch.