In fields such as packaging, electronics, and pharmaceuticals, 1050 pure aluminum foil, with its high purity of ≥99.5%, combines corrosion resistance, ease of processing, and lightweight advantages, making it a fundamental material in numerous industries.
As a pure aluminum product, 1050 aluminum foil jumbo roll has an aluminum content exceeding 99.5%, which gives it two core advantages: Firstly, it offers strong corrosion resistance and is resistant to oxidation in humid and weakly acidic environments, making it suitable for applications requiring high hygiene standards such as food and pharmaceuticals; secondly, it exhibits excellent plasticity, making it easy to form complex shapes through processes such as cold rolling and stamping.
Aluminum 1050 h14’s core process is "cold rolling + work hardening": 1050 aluminum foil billets are rolled through a cold rolling mill multiple times, utilizing the "work hardening effect" generated by metal deformation to increase the material's hardness and strength, ultimately achieving the performance standard of "1/4 hard".
Hardness: Approximately 50-58 HRF (Rockwell hardness), with a noticeably rigid feel and resists manual bending and deformation.
Tensile strength: 110-145 MPa, 15%-50% higher than the soft O state (approximately 95 MPa), capable of withstanding certain external impacts.
Elongation: 8%-15% (50mm gauge length), with moderate formability, capable of simple bending but unable to withstand complex stamping (such as deep drawing or drawing).
Food Packaging: Disposable aluminum foil container, household aluminum foil rolls, etc.
Electronic shielding: Shielding covers for small electronic components (such as the signal shielding layer in routers and headphones, which requires a certain strength to prevent deformation during transportation);
General industrial gaskets: Sealing gaskets for pipes and equipment (no complex design required, only high pressure resistance and resistance to breakage).
The H24 process has an additional key step compared to the H14 process: after cold rolling and work hardening, the aluminum foil is placed in an annealing furnace for "low-temperature incomplete annealing." By controlling the temperature (approximately 200-250°C) and time, some internal stresses are eliminated while retaining most of the strength gained from work hardening. The result is the same "quarter-hard" state, but with properties leaning towards "toughness."
Hardness: Approximately 48-55 HRF, slightly lower than H14, with a slightly softer feel but still rigid.
Tensile strength: 110-140 MPa, similar to H14, with no significant decrease in strength.
Elongation: 10%-18% (50mm gauge length), 2-3 percentage points higher than H14, allowing it to withstand more complex stretching and stamping processes without cracking or breaking.
Pharmaceutical packaging: Aluminium 1050 h24 is often used for blister packaging (e.g., aluminum-plastic blisters for capsules and tablets, which require punching to form raised cavities; insufficient elongation can easily lead to blister rupture);
Battery components: Aluminum foil for lithium battery tabs (tabs require multiple bending and welding processes; high elongation reduces the risk of breakage during bending);
Precision hardware: Small aluminum foil components for automotive interiors (e.g., decorative foil for air conditioner vents, which must conform to curved surfaces and maintain shape stability after complex molding).