Aluminum cookware, with its thermal efficiency exceeding 93%, holds nearly half of the global cookware market share. Aluminium circles, as the core raw material for deep drawing and spinning, directly determine the yield rate, cooking performance, and lifespan of finished cookware based on their material compatibility and quality stability. As a professional aluminum circles manufacturer, Haomei Aluminum, based on over 20 years of mass production experience serving global cookware customers, has built a full-spectrum supply system of aluminium circle for cooking pans manufacturing, covering the production needs of all categories, including household frying pans, saucepans, milk pots, and large-capacity commercial cookware.
From a manufacturing process perspective, cookware forming places clear performance thresholds on aluminum circles.
First, deep drawing plasticity is crucial. Soft materials must possess sufficient elongation and uniform grain structure to avoid defects such as sidewall cracking, edge wrinkling, and orange peel texture during deep stamping, thus reducing the scrap rate in mass production.
Second, thermal conductivity uniformity is essential. Low matrix impurity segregation and stable thermal conductivity ensure even heating of the cookware and reduce localized scorching.
Third, corrosion resistance and food safety are paramount. The cookware must withstand long-term contact with weak acids and oily media during cooking, and the leaching of harmful elements must meet the market access standards of various countries.
Fourth, surface compatibility is critical. Controllable surface cleanliness and roughness ensure the adhesion of subsequent non-stick coatings, hard anodizing, and ceramic coatings, as well as the finished product's appearance.
Based on these performance requirements, the industry has established a clear grade selection system.
For single-layer lightweight cookware such as milk pots, baby food pots, and small frying pans, high purity 1050 and 1060 aluminum circles are the preferred choice. In the fully annealed HO soft state, their elongation can reach 28%-32%, and their thermal conductivity reaches 230W/(m·K). They combine plasticity and thermal conductivity, making them suitable for high-speed continuous stamping production lines.
For mainstream household frying pans, saucepans, and steamers, 1100 aluminum circles offer a high cost-performance ratio due to their balanced strength and formability. With an aluminum content ≥99.0%, they can withstand medium-depth stretching and conventional multi-layer bottom processes.
For mid-to-high-end multi-layer bottom cookware, commercial cookware, and pressure cookers, 3003 aluminum circles with aluminum-manganese alloy are more suitable. After alloying with manganese, their strength is increased by more than 30% compared to pure aluminum, and their resistance to weak acid corrosion is superior. They can withstand the high-temperature conditions of brazed multi-layer bottoms, and the finished product is dent-resistant, wear-resistant, and has a significantly extended service life.
Haomei Aluminum's aluminium circle for cooking pans utilize both casting and hot rolling processes to meet the cost and quality requirements of diverse customers. The entire process involves strict control over grain size and mechanical properties, resulting in extremely low batch performance variation and a stable thickness tolerance of ±0.02mm. The discs are burr-free and free of flash, and undergo degreasing, dust removal, and double-sided coating, ensuring precise feeding on automated production lines. All aluminum circles products are FDA, LFGB, and GB 4806.9 food contact safety certified. Customized diameters, thicknesses, and tempering conditions are available to suit different cookware types. Dedicated protective packaging for ocean shipping ensures a stable supply to cookware manufacturers worldwide, helping customers optimize process yields and enhance the competitiveness of their end products.