1050 Aluminium Foil

1050 aluminium foil is a 99.5% pure aluminium product supplied in thin gauges for industrial and packaging use. The low alloy content keeps conductivity high and makes the foil easy to bend, fold, emboss and laminate, while its soft, uniform surface accepts printing and adhesive bonding without special surface preparation.

From cast roll to finished foil

1. Rolling

Production starts from a cast or continuously cast roll that is progressively reduced on a rolling mill. Each pass thins the strip while controlling crown, flatness and surface quality, and the final passes bring the material down to the ordered gauge. Thickness is checked at the exit of the finishing stand so that the coil stays within the agreed tolerance.

2. Annealing

Work hardening from rolling is relieved by annealing, which restores ductility and sets the temper. The coil is held at a controlled temperature and then cooled at a defined rate, so that soft O temper and the harder H tempers can be produced from the same base metal. Annealing also helps stabilise the grain structure for later forming operations.

3. Slitting and packing

Annealed master coils are slit to the customer's required width, with edge quality and burr controlled during the cut. Finished reels are then wound on cores, protected against moisture and mechanical damage, and packed for transport. Slitting and packing tolerances are agreed per order so the foil arrives ready for the next converting step.

Available tempers

1050 foil can be supplied in a range of tempers to match how much forming the application demands. Soft tempers favour deep folding and lamination, while harder tempers offer better handling stiffness for automatic packaging lines.

• O — fully annealed, softest and most formable, suited to insulation and wrapping.
• H14 / H16 — partially hardened for improved stiffness and clean cutting.
• H18 — fully hard, providing maximum strength for flat and semi-rigid uses.

Typical uses

Common applications include thermal insulation facing, food and confectionery wrapping, lamination with paper or film, cable and duct shielding, and general fabrication where a light, conductive and formable metal sheet is needed.