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Introduction: Why 3105 H24 Aluminum Circle Matters in Forming Applications

As a manufacturer of aluminum circles and discs, we supply materials that must perform consistently in forming operations such as deep drawing, spinning, stamping, and anodizing. In cookware, lighting reflectors, and certain enclosure components, the round blank is not a simple cut-to-size item. It is a starting substrate whose chemistry, temper, grain structure, and surface quality directly affect earing, cracking, orange peel, and final appearance.

3105 H24 aluminum circle is widely selected when users need a balance of moderate strength, stable formability, and reliable surface finish. Compared with very soft tempers, H24 provides improved handling strength and dent resistance. Compared with higher-strength alloys, 3105 maintains good drawability for common cookware depths and general forming.

Product Overview: Alloy, Temper, and Performance Intent

Material: AA3105 (Al-Mn-Mg series)

3105 belongs to the 3000 series aluminum alloys, where manganese is the primary alloying element. A small magnesium addition helps improve strength without sacrificing workability. For many press shops, this combination offers a practical window between ease of forming and finished-part rigidity.

Temper: H24

H24 typically indicates strain hardened and partially annealed. In production terms, it means the coil has been work-hardened and then stabilized by partial annealing to reach a controlled strength and ductility. For aluminum disc users, the key objective is consistent forming behavior across lots and across diameters.

Typical performance expectations

• Stable formability for stamping, shallow to medium deep drawing, and spinning

• Improved stiffness and handling compared with fully annealed O temper

• Good surface quality for painted, coated, and certain anodized finishes

• Good corrosion resistance for general indoor and normal outdoor service

Main Advantages of 3105 H24 Aluminum Discs

Excellent formability
Well suited for deep drawing, stretching, and spinning processes. The forming behavior is stable, with low risk of cracking or wrinkling, making it suitable for multi-stage stamping operations.

Moderate strength and structural stability
Compared with pure aluminum discs, 3105 H24 offers higher strength while maintaining good ductility, improving the deformation resistance of finished products.

Good corrosion resistance
Provides reliable resistance to atmospheric and humid environments, making it suitable for general industrial and kitchen applications.

Stable surface quality
Uniform microstructure and smooth surface finish meet the requirements of appearance-critical stamped parts and subsequent surface treatments.

High processing adaptability and efficiency
Stable processing performance with a low scrap rate, ideal for large-scale and continuous production.

Clear cost-performance advantage
Achieves a good balance between material cost, processing difficulty, and finished-product yield, helping keep overall manufacturing costs under control.

Technical Parameters (Typical Supply Range)

The following table summarizes our typical manufacturing range for 3105 H24 aluminum discs. Specific values can be adjusted by agreement and are verified by inspection results and certificates.

Note: For projects requiring tighter limits (for example reflector-grade surface or low earing for deep drawing), we define acceptance criteria during pre-production trials.

Key Features of Our 3105 H24 Aluminum Circle

1) Controlled drawability and earing behavior

Earing is driven by crystallographic texture developed during rolling and annealing. Our process route focuses on stabilizing the texture and controlling variation between coils so that ear height remains predictable. This reduces trimming loss and improves yield in cookware and spun parts.

2) Consistent surface for appearance-sensitive parts

For cookware exteriors, coated lids, and lighting components, surface defects translate directly to scrap. We manage coil cleanliness, rolling oil control, and surface inspection to reduce issues such as roll marks, pits, and streaks. For customers needing improved reflectivity, we can supply a brighter surface based on agreed specifications.

3) Stable thickness and flatness for press performance

Press stability depends on uniform thickness and minimal residual stress. We control thickness profile during rolling and monitor flatness at the coil stage to avoid disc distortion during blanking and subsequent forming.

4) Edge quality to protect tooling

Burr and edge tearing accelerate die wear and can initiate cracks during drawing. Our blanking methods and deburring controls target smooth edges with consistent edge quality across diameter ranges.

Manufacturing Capabilities and Process Control

Coil-to-disc manufacturing route

We manufacture aluminum circles from controlled rolled coil stock. Key steps include:

1. Alloy melting and casting with chemistry control

2. Hot rolling and cold rolling to target gauge

3. Intermediate and final annealing according to temper requirements

4. Surface finishing and coil inspection

5. Circle blanking (press punching or circle cutting) with burr and diameter control

6. Sorting, marking, and export packing

Circle quality is not only determined at the blanking step. It begins at metallurgy and continues through rolling, heat treatment, and surface management.

Equipment and size coverage

We supply a broad diameter and thickness range suited to:

• High-volume cookware blanks

• Spinning blanks for kettles and household items

• General stamping blanks for industrial covers and housings

For customers sourcing across the 3000 series, we also supply related products such as 3105 Aluminum Circle and other variants within the 3000 Series Aluminum circle category.

Quality Control, Standards, and Documentation

Incoming and in-process inspection

Our QC plan typically covers:

• Chemical composition verification per melt

• Mechanical property checks aligned with temper and specification

• Dimensional inspection: thickness, diameter, ovality

• Surface inspection under defined lighting and criteria

• Edge burr monitoring and deburring validation

• Packaging checks for transport protection

Standards and compliance

We can supply according to commonly requested standards such as EN 485 and ASTM B209 where applicable, as well as customer-specific technical agreements. Each shipment can be provided with:

• Mill test certificate (MTC)

• Heat and coil traceability

• Inspection records per lot

If your application is appearance-critical or involves deep drawing, we recommend confirming acceptance criteria for surface class, earing limits, and allowable minor defects before mass production.

Customization Options for Engineering and Procurement Teams

Because end-use conditions vary widely, we support customization based on your forming process and finishing route:

• Diameter schedule optimization to reduce trimming waste

• Temper selection adjustments when higher ductility or higher stiffness is required

• Surface finish targets for coated or reflector parts

• Interleaving paper, film, or specific pallet configuration for automated feeding

• Batch control and consistent coil source for long-running programs

For development projects, we can support small trial lots and then lock the process window once die performance is validated.

Application Scenarios and Target Industries

Cookware and kitchenware

• Pots, pans, pressure cooker parts, lids

• Spun and deep drawn components3105 H24 is often chosen where users want better handling strength than O temper while maintaining a broad forming window.

Lighting and reflector components

• Lamp housings and reflector blanks

• Decorative spun partsSurface stability and cleanliness are key, especially when downstream polishing or coating is used.

Building and general fabrication

• Covers, trims, and formed panels where corrosion resistance and moderate strength are needed

• General stamping blanks

Comparison with Other Alloys and Tempers

Selecting the correct alloy is a practical engineering decision. Below is a typical comparison used during material selection.

3105 H24 vs 3003 (common cookware alloy)

• Formability: Both are suitable for many cookware forms. 3003 is frequently selected for very stable drawing performance.

• Strength: 3105 can offer a useful strength balance due to Mg addition, especially in H24.

• Cost and availability: Both are widely produced. Choice often depends on forming severity, finish needs, and existing approvals.

3105 H24 vs 3004 (higher strength, Mg-rich)

• Strength: 3004 is generally higher strength.

• Formability: For severe deep drawing, 3004 may require stricter process control and can show different earing behavior.

• Typical use: 3004 is common where additional strength is required, but it may be unnecessary for standard cookware depths.

3105 H24 vs 1050/1100 (high purity series)

• Conductivity and softness: 1xxx alloys are softer and have high conductivity.

• Strength: 1xxx is lower strength than 3105 H24.

• Use case: 1xxx is often selected for very high formability or conductivity-driven parts, while 3105 H24 is preferred when stiffness and handling are important.

H24 vs O temper in 3105

• O temper: Maximum ductility, often preferred for very deep drawing.

• H24: Better rigidity and dent resistance, often preferred for stable handling and less deformation during transport and processing.

We support alloy and temper selection based on your forming depth, draw ratio, lubrication, and tool design.

Conclusion: Stable Supply, Technical Support, and Long-Term Cooperation

As a factory specializing in aluminum circle and disc production, we treat 3105 H24 aluminum circle as an engineered forming material rather than a simple cut blank. By controlling chemistry, rolling, heat treatment, surface condition, and blanking quality, we deliver discs that run consistently in stamping, spinning, and cookware drawing lines.

For ongoing programs, we prioritize stable lot-to-lot performance, clear inspection criteria, and traceable documentation. Our technical team can support material selection, trial planning, and parameter alignment with your tooling and finishing processes. We welcome long-term cooperation based on consistent quality, predictable lead times, and continuous improvement driven by production feedback.