Selling 3003 O / H18 Non-Stick Aluminum Circles for Cookware , Factory Price

The 3003 non-stick aluminum circle is a high-quality aluminum disc product made from 3003 aluminum alloy. It is produced through rolling, drawing, stamping, and annealing processes. As a member of the Al-Mn (aluminum-manganese) series, 3003 aluminum offers excellent corrosion resistance, good ductility, outstanding thermal conductivity, and superior forming performance.

It is widely used in kitchen cookware, utensils, lighting reflectors, electronic shells, and pressure vessels due to its balance of strength, lightweight properties, and formability.

3003-O Aluminum Circle

The "O" temper refers to the fully annealed (soft) condition. This state offers maximum ductility and formability, making it ideal for deep drawing, spinning, and complex forming processes. The O temper minimizes cracking and waste during manufacturing.

3003-H18 Aluminum Circle

The "H18" temper is strain-hardened to achieve maximum hardness. It is suitable for applications where higher strength and hardness are required, or as a base material for composite bottom cookware. Some manufacturers also use H18 circles for shallow drawing or stamping, producing cookware with a stiffer body.

Mechanical Properties

Physical Properties

Thermal Conductivity: ≈160 W/m·K

Electrical Conductivity: ≈45% IACS

Melting Point: 643°C

Operating Temperature Range: -50°C ~ +250°C

1. Excellent Heat Conductivity

3003 aluminum provides fast and uniform heat distribution, ensuring even cooking and shorter heating times — improving both energy efficiency and user experience.

2. Outstanding Corrosion Resistance

Thanks to its manganese content, 3003 aluminum resists oxidation and chemical corrosion, even in humid and high-temperature kitchen environments, ensuring a longer cookware lifespan.

3. Superior Formability and Weldability

The alloy’s good ductility allows deep drawing, spinning, and stamping without cracking, meeting the diverse forming needs of cookware manufacturers.

4. Food-Grade Safety

Complies with international food-contact standards such as EU LFGB and U.S. FDA, ensuring no harmful substances leach during cooking — making it safe and reliable for consumers.

5. Lightweight and Energy-efficient

At only one-third the weight of steel, 3003 aluminum enables lightweight cookware that is easier to handle and heats up faster — meeting modern ergonomic and energy-saving demands.

Non-stick Cookware: The core material for frying pans, woks, soup pots, and sauté pans.

Pressure Cooker Liners: Ensures uniform heat under pressure and durability under repetitive use.

Bakeware: Used in cake pans, pizza trays, and baking sheets for efficient heat transfer.

Appliance Inner Pots: Ideal for rice cookers, multi-functional pots, and other household kitchen appliances.

As a professional aluminum circle manufacturer, our company covers an area of over 60,000 square meters and is equipped with 6 aluminum circle punching lines, 3 hot rolling lines, annealing furnaces, and surface cleaning equipment.

With an annual production capacity exceeding 30,000 tons and more than 20 years of aluminum processing experience, we offer comprehensive technical support - from alloy selection, forming analysis, to surface coating solutions.

We provide OEM and ODM services, customized according to clients’ requirements for size, tolerance, surface finish, and coating types.

Our products are exported to Southeast Asia, South America, the Middle East, Europe, and Africa, serving over 40 countries. We maintain long-term partnerships with several international cookware brands, forming a reliable and globally integrated supply chain.

1. High Dimensional Accuracy

Strict control over diameter and thickness tolerances ensures perfect compatibility with automated production lines, reducing tooling wear and material waste.

2. Superior Surface Quality

Each circle features a smooth, oil-free, scratch-free surface for optimal non-stick coating adhesion (PFOA Free).

3. Consistent Internal Quality

We maintain stable alloy grain structure and mechanical uniformity, reducing breakage or deformation during secondary processing.

4. Customization Options

We provide tailor-made solutions according to specific cookware designs — including thickness, diameter, and alloy options (e.g., 3004) — to meet your individual needs.

5. Full Traceability and Certification

All raw materials and production batches are traceable. We meet ISO and FDA standards, ensuring your finished cookware passes global compliance testing with ease.

Our packaging meets international export standards, ensuring safety and product integrity during shipping:

Inner layer: Moisture-proof paper + protective film

Outer layer: Wooden pallet with steel band reinforcement

Approximate weight per pallet: 1000kg

Multiple delivery options: Sea, Land, or Air freight