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As a manufacturer of aluminum circle products, we produce 5052 H32 and 5052 H38 aluminum circles for applications requiring a balanced combination of corrosion resistance, strength, surface quality, and dimensional consistency. Our production process covers alloy melting control, rolling, annealing or temper processing, precision blanking, inspection, and export-ready packaging.

5052 aluminum circles are made from an aluminum-magnesium alloy in the 5000 series. Compared with 1000 series aluminum circles, 5052 material provides higher mechanical strength and better resistance to humid, marine, and mildly corrosive environments. It is widely selected for cookware components, lighting reflectors, appliance parts, traffic signs, pressure-related components, and industrial stamped products.

5052 Aluminum Circle Material Characteristics

5052 is a non-heat-treatable aluminum alloy strengthened primarily through cold working and temper control. Magnesium is the principal alloying element, while chromium improves corrosion resistance and helps control grain structure. The alloy is known for good weldability, moderate formability, and stable performance in demanding fabrication environments.

Our 5052 aluminum circle production is designed to provide reliable material behavior during spinning, stamping, shallow drawing, bending, and assembly. The suitable temper depends on the final processing route. H32 is generally selected where moderate forming performance is required, while H38 is used where higher hardness and rigidity are more important than extensive deformation.

For customers sourcing a broader range of magnesium-alloy blanks, our 5000 Series Aluminum Circle range includes multiple alloy and temper options for different fabrication requirements.

Difference Between 5052 H32 and H38 Aluminum Circles

The temper designation has a direct effect on hardness, tensile strength, elongation, and forming behavior. Both H32 and H38 are strain-hardened tempers. The first digit, H, indicates strain hardening. The second digit indicates the degree of strain hardening, while the third digit indicates stabilization treatment.

5052 H32 Aluminum Circles

5052 H32 aluminum circles are strain-hardened and stabilized to approximately quarter-hard condition. This temper provides a practical balance between strength and workability. It is commonly used for stamped covers, cookware bottoms, lampshades, electrical enclosures, appliance panels, and moderately formed industrial parts.

Compared with harder tempers, H32 material offers better resistance to cracking during bending, pressing, and shallow drawing. It is particularly suitable when the finished part requires a controlled shape change after blanking.

5052 H38 Aluminum Circles

5052 H38 aluminum circles are strain-hardened and stabilized to a full-hard condition. They have higher tensile strength and surface hardness than H32 material. H38 aluminum discs are generally selected for applications where rigidity, dent resistance, and dimensional stability are key priorities.

Because H38 has lower elongation than H32, it is better suited to flat stamped parts, structural covers, signs, panels, and components with limited drawing depth. For severe deep drawing or multi-stage forming, we normally recommend evaluating softer tempers or conducting forming trials before production approval.

Performance Advantages of 5052 Aluminum Discs

Good corrosion resistance: Contains magnesium, offering excellent resistance to corrosion from seawater, humidity, and the atmosphere.

Good formability: Features good plasticity, making it suitable for stamping, deep drawing, stretching, and spinning processes.

High strength: Offers higher strength compared to pure aluminum discs (such as 1050 or 1060), making it suitable for products requiring greater structural strength.

Good weldability: Compatible with common welding processes.

High surface quality: Yields a flat, smooth surface suitable for subsequent treatments such as anodizing and coating.

Lightweight: The low density of the aluminum alloy helps achieve product lightweighting.

Wide range of applications: Suitable for cookware, pot lids, lighting fixtures, signage, containers, automotive parts, industrial stamped components, and more.

Technical Parameters of 5052 H32 H38 Aluminum Circles

The following table presents typical manufacturing ranges and material characteristics. Final specifications can be produced according to the applicable standard, drawing, sample, and agreed inspection requirements.

Chemical composition and mechanical properties vary with thickness, applicable standard, and test direction. We confirm the final acceptance criteria before mass production and provide mill test documentation when required by the purchase order.

Manufacturing Process at Our Factory

Our manufacturing process for 5052 H32 H38 aluminum circles begins with controlled aluminum coil or sheet selection. The incoming material is checked for alloy identity, thickness consistency, surface condition, and rolling quality. We then process the material according to the required temper and blank dimensions.

1. Material and Temper Control

Temper control is essential for 5052 aluminum discs. H32 and H38 materials must meet the intended balance of strength and forming behavior. We monitor coil properties and process conditions to maintain consistent mechanical performance from one production lot to the next.

2. Precision Circle Blanking

We use dedicated circle blanking equipment to produce round aluminum blanks with controlled diameter, roundness, and edge condition. Tooling selection is adjusted according to thickness, diameter, and edge-quality requirements. For applications involving visible surfaces or further spinning, burr control is especially important.

3. Surface Inspection

Each production order is inspected for surface defects that may affect downstream manufacturing. Depending on the agreed standard, our inspection includes checks for scratches, oil marks, dents, edge damage, waviness, and oxidation. Protective interleaving materials can be applied when surface preservation is required during transportation or fabrication.

4. Dimensional Verification

We verify thickness, diameter, roundness, and packing quantity throughout production. Tolerance requirements are reviewed during quotation, particularly for automatic stamping lines, spinning equipment, and parts assembled with tight dimensional interfaces.

Surface and Edge Quality Requirements

Surface quality has a significant effect on the performance and appearance of finished aluminum products. For cookware, lighting, and decorative industrial products, the aluminum circle surface must support polishing, anodizing, coating, or other downstream treatments without unacceptable visual defects.

We supply 5052 H32 aluminum circles and 5052 H38 aluminum circles in mill finish as standard. Depending on the application, we can discuss requirements for protective film, paper interleaving, low-oil surfaces, or specific visual acceptance levels. We also control blanking burr direction and burr height according to the intended stamping or spinning process.

For customers requiring a dedicated product specification, our 5052 Aluminum Circle product program can be matched to diameter, thickness, temper, surface, and packaging requirements.

Typical Applications

5052 H32 H38 aluminum circles are used across industrial sectors where lightweight, corrosion-resistant, and formable aluminum blanks are required.

Cookware and Kitchen Components

5052 H32 circles can be used for cookware covers, bases, outer shells, and formed kitchen components. The alloy offers improved strength compared with pure aluminum grades while retaining useful forming capability for suitable part geometries.

Lighting and Electrical Products

Aluminum discs are used in lamp housings, reflector supports, electrical covers, and lighting assemblies. H32 temper is preferred where forming is required, while H38 may be selected for rigid flat covers and structural panels.

Industrial Equipment

Industrial applications include machine guards, inspection covers, instrument housings, ventilation components, mounting plates, and corrosion-resistant equipment parts. The magnesium-containing 5052 alloy is suitable for environments where moisture resistance is important.

Signage and Transportation Components

5052 H38 aluminum circles can be used for signs, identification plates, rigid discs, and stamped transportation components. Its higher hardness helps maintain shape during handling and service.

Selection Guidance for Buyers

When selecting 5052 aluminum circles, buyers should define the final fabrication process before choosing the temper. H32 is usually the more appropriate choice for parts requiring spinning, bending, or shallow drawing. H38 is better suited to parts requiring high stiffness with limited deformation.

The following purchasing information helps us prepare an accurate technical proposal:

• Alloy and temper, such as 5052 H32 or 5052 H38.

• Required diameter and thickness.

• Diameter, thickness, and burr tolerances.

• Surface appearance requirements.

• Intended fabrication method, including stamping, spinning, drawing, or coating.

• Required standard and inspection documents.

• Packaging method, pallet size, and destination port.

Packaging and Export Supply

As a factory serving export customers, we pack aluminum circles to reduce the risk of moisture, abrasion, and edge damage during storage and international shipment. Standard export packing may include paper interleaving, plastic protection, moisture barrier materials, reinforced wooden pallets, and steel or plastic strapping where appropriate.

Each package can be marked with alloy, temper, thickness, diameter, lot number, quantity, and customer identification requirements. Packaging details are finalized according to the product surface standard, shipping method, and container loading plan.

Conclusion

5052 H32 H38 aluminum circles provide a dependable material solution for manufacturers needing corrosion-resistant aluminum blanks with controlled strength and surface quality. H32 offers a balanced option for moderate forming operations, while H38 provides higher hardness for rigid stamped components.

Our factory manufactures 5052 aluminum circles with controlled alloy composition, temper consistency, dimensional accuracy, and export-oriented packaging. By matching the circle specification to the final fabrication process, we help customers achieve stable production performance and efficient material utilization.