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- Hot Rolled Aluminium Circles
- Produced from DC (Direct Chill) semi-continuous cast ingots, hot-rolled aluminium circles undergo high-temperature hot rolling, cold rolling for thickness adjustment, and final annealing before being precision-blanked. They are ideally suited for demanding processes such as deep drawing, metal spinning, and impact-bonded base (sandwich-bottom) brazing—applications that require high material stability. Haomei Aluminum operates an independent, end-to-end production line—encompassing hot rolling, cold rolling, and precision blanking—capable of supplying hot-rolling aluminum circles across all alloy grades. With an annual production capacity exceeding 30,000 tons, our products are exported to over 30 countries and regions worldwide.
In terms of the production process, ingots intended for hot-rolled aluminium circles undergo homogenization annealing at temperatures above 480°C for 12 hours to eliminate compositional segregation and internal casting stresses. Subsequently, the material is processed through a reversible hot-rolling mill with multiple high-reduction passes, which breaks down the coarse, as-cast microstructure and creates uniform, deformed grains. Compared to products manufactured via shorter, simplified processes, our hot rolled aluminum circles exhibit a reduction in compositional segregation of over 60%, a residual internal stress relief rate of ≥95%, and a mechanical property variance of ≤3% within a single coil. All performance indicators meet the requirements of the ASTM B209 standard.
In terms of quantitative performance parameters, 1050-O temper hot-rolled aluminum circles exhibit a stable elongation after fracture of ≥30%, an Erichsen cupping test (IE) value of ≥10.8 mm, and a limiting deep-drawing ratio of up to 2.4:1. For 3003-O DC aluminium circle products, the tensile strength ranges from 95 to 130 MPa, with an elongation of ≥25%; they also withstand over 720 hours of neutral salt spray testing without pitting corrosion. Over more than a decade of export experience, I have found that most clients in the mid-to-high-end cookware sector specifically request hot-rolled aluminum circles. Although the per-kilogram procurement cost is slightly higher than that of products manufactured via CC processes, the overall production cost—when accounting for reduced material loss and lower rework rates for finished items—is actually more economical.
Hot-rolled aluminium circles are utilized across a wide range of industrial sectors.
In the cookware industry, they are frequently used for deep-drawn saucepans, clad-bottom stir-fry pans, and pressure cooker liners; they ensure a surface free of "orange-peel" defects after forming, offer uniform and controllable surface roughness, and achieve a Grade 0 rating for coating adhesion.
In the precision hardware sector, they are used for spun lighting reflectors, thin-walled containers, and complex stamped components.
In the transportation infrastructure sector, they serve as circular road signs for highways, offering high resistance to wind-load-induced deformation and an extended service life in outdoor environments.
Currently, Haomei Aluminum supplies a full range of hot-rolled aluminum circles with thicknesses from 0.8 mm to 6.0 mm and diameters from 120 mm to 1200 mm. We offer mainstream alloys such as 1050, 1060, 1100, and 3003, with customizable tempers including O, H12, and H14. Surface finishing options include double-sided PE protective film, precision edge trimming, and chromium-free passivation.
As the primary manufacturer, we provide a material certificate and a mechanical properties test report for every batch of hot-rolled aluminum circles. Our food-contact grade products are certified under FDA and LFGB standards. We maintain a ready stock of standard specifications; regular orders are dispatched within 7 days, while custom orders are delivered in 15–20 days. We also provide specialized packaging for ocean freight and comprehensive, end-to-end order tracking services.
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