1200 Aluminum Foil/Sheet

Al 1200 Aluminum Foil is a commercially pure 1xxx series aluminum foil with a minimum aluminum content of 99.0%, combining the formability, corrosion resistance, and barrier performance of the 1xxx series with slightly improved mechanical strength relative to higher-purity grades — making it a practical choice for high-volume applications where durability and cost-effectiveness take precedence over maximum conductivity. The higher permitted iron and silicon content of 1200 relative to 1050 increases solid-solution electron scattering, yielding electrical conductivity of ~55–57% IACS and thermal conductivity of ~205 W/m·K — lower than 1050 but still well above that of structural aluminum alloys. Tensile strength in the annealed condition is slightly higher than equivalent 1050 foil, and work-hardening response is more pronounced in cold-rolled tempers, providing greater stiffness for packaging and shielding applications where 1050 may be too soft. Al 1200 foil is used in flexible packaging, thermal barrier laminates, pharmaceutical and food packaging, and EMI shielding wraps where barrier integrity and mechanical durability are the primary selection criteria. In harder tempers it is used for heat exchanger fin stock and cable shielding where dimensional stability and resistance to handling damage are required. Surface quality supports use in general-purpose anodization and lacquering applications. Al 1200 is a widely used benchmark alloy in commercial-purity aluminum foil processing research.