News

Title

In the modern kitchenware industry, the quality of cookware directly affects the cooking experience and product durability. Aluminum materials such as 1070 aluminum circles, 3003 aluminum circles, and 5052 aluminum circles are widely used due to their excellent formability, corrosion resistance, and processing flexibility, making them ideal for deep-drawing cookware manufacturing.

HAOMEI Aluminum produces 5052 aluminum circles optimized specifically for deep drawing and spinning processes. Through special annealing treatment, these circles offer exceptional plasticity and elongation, meeting the requirements of high-deformation cookware such as pressure cookers, stock pots, and deep soup pots while significantly reducing defect rates.

5052 Aluminum Circles for Cookware Blanks

5052 aluminum circle is part of the 5xxx series Al-Mg alloy, mainly composed of aluminum and magnesium, with a small amount of chromium that further enhances its corrosion resistance and strength. The 5-series aluminum discs combine excellent plasticity with outstanding corrosion resistance, ensuring uniform thickness, stable shape, and good surface quality during deep-drawing processes.

Different tempers of 5052 aluminum circles (such as O, H32, H34) offer various mechanical properties, enabling cookware manufacturers to select the most suitable material according to product design.

Common Tempers of 5052 Aluminum Circles

• O temper (annealed):
  Provides the best formability; ideal for complex deep-drawing applications.

• H32 temper:
  Balances strength and formability; suitable for cookware requiring moderate structural strength.

• H34 temper:
  Offers higher hardness and strength; ideal for products requiring greater rigidity.

5052 aluminum discs for cookware are typically produced through precision rolling and surface finishing to meet strict quality requirements. Their diameter, thickness, and surface smoothness can be customized according to customer specifications, ensuring optimal performance during deep drawing.

Technical Specifications of 5052 Aluminum Circles

Why 5052 Aluminum Circles Are Ideal for Cookware Manufacturing

1. Outstanding Deep-Drawing Performance

In the O-temper condition, 5052 aluminum circles offer excellent elongation (22–30%).
During multi-step deep drawing or complex spinning, the material flows smoothly without cracking or tearing, allowing the production of deep, complex shapes.

2. Excellent Corrosion Resistance

The magnesium content in 5052 significantly enhances its resistance to moisture, acidic food ingredients, alkaline cleaning agents, and even marine environments. Cookware retains a clean, spot-free surface over long-term use, extending service life and reducing warranty claims.

3. Superior Thermal Conductivity

With a thermal conductivity of 138-151 W/m·K, 5052 aluminum ensures fast and even heat distribution.
This prevents hotspots and burning, improves cooking efficiency, and enhances overall performance.

4. Lightweight yet High Strength

Compared with 1-series and 3-series aluminum alloys, 5052 provides higher tensile strength while maintaining low weight.
This results in cookware that is easy to handle yet durable enough to resist dents and deformation during daily use.

5. Excellent Compatibility with Surface Coatings

The 5052 aluminum disc has a smooth, flat surface, compatible with non-stick coatings, anodizing, spraying, or other decorative coatings. The coating adheres well and is not easily peeled off even after high-temperature cooking and long-term use, ensuring excellent appearance and functionality for cookware products.

6. Eco-Friendly & Fully Recyclable

Aluminum is 100% recyclable, reduces energy consumption in production, and supports sustainable manufacturing.

Applications of 5052 Aluminum Discs in the Cookware Industry

Rice Cooker Inner Pots

Rice cooker inner pots require single-step deep drawing to form the bowl shape.
5052-O aluminum circles offer the high formability needed to produce complex inner-pot shapes without cracking or excessive thinning.

Pressure Cooker Bodies

Pressure cookers require materials with adequate strength and pressure resistance.
5052 aluminum circles in H32 or H34 provide enough strength and excellent sealing performance, ensuring safe operation.

Woks and saucepans

For woks and saucepans requiring deep drawing, the high formability and corrosion resistance of 5052 aluminum discs ensure production efficiency and service life. Their excellent thermal conductivity guarantees consistent cooking results.

Baking Trays & Pizza Plates

5052 aluminum circles provide uniform heating and easy forming, ensuring baking tools are durable and produce consistently baked results.

5052 Aluminum Circles vs. 3003 Aluminum Circles

Strength Comparison: 5052 has higher tensile strength (210-260 MPa compared to 3003's 110-200 MPa), making it suitable for more demanding applications.

Corrosion Resistance: While 3003 has good corrosion resistance, 5052 is superior, especially in cooking environments containing acidic or alkaline foods.

Surface Quality: Cookware made with 5052 aluminum discs has a smoother, brighter surface and a better appearance compared to traditional 3003 discs.

Durability: The higher strength and better corrosion resistance of 5052 aluminum discs make cookware more durable and extend its service life.

Packaging & Logistics

To ensure the aluminum discs are not exposed to moisture or damaged during transportation, we use export-grade packaging standards:

• Inner Protection: Paper padding (upon request) can be placed between each layer of aluminum discs to prevent scratches; inner wrapping includes plastic film and moisture-proof paper.

• Drying Treatment: Sufficient desiccant is placed to prevent oxidation and discoloration.

• Outer Reinforcement: Sturdy wooden pallets or crates are used for packaging, reinforced with steel straps, suitable for long-distance sea transport.