Comprehensive Technical Data Sheet: 1050 Aluminum Circle

1. Material Definition & Standards

The 1050 aluminum circle is a round blank manufactured by stamping or shearing from 1050 aluminum sheet or coil. This grade belongs to the 1xxx series of industrial pure aluminum as per standards like GB/T 3880, with a minimum aluminum content of 99.5%. Due to its high purity, this material exhibits exceptional plastic formability and excellent corrosion resistance, making it a primary choice for complex forming processes such as deep drawing and spinning.

2. Core Chemical Composition & Metallurgical Characteristics

Its primary chemical composition is Aluminum (Al) ≥ 99.5%, with strictly controlled impurities: Iron (Fe) ≤ 0.40%, Silicon (Si) ≤ 0.25%, and other trace elements (Cu, Mn, Mg, Zn each ≤ 0.05%). This high-purity composition results in the following metallurgical traits:

  • High Plasticity: A pure crystalline structure with low resistance to dislocation movement allows for severe cold deformation without cracking.
  • Excellent Thermal & Electrical Conductivity: Second only to higher purity grades like 1060/1070, with a thermal conductivity of 222 W/(m·K), making it ideal for heat transfer applications.
  • Superior Anodizing Response: Homogeneous composition facilitates the formation of a uniform, dense, and easily colorable anodic oxide layer.

3. Physical & Mechanical Properties

  • Physical Properties: Density: 2.71 g/cm³, Melting Point: ~660°C, Electrical Conductivity: ~61% IACS.
  • Mechanical Properties (Temper Dependent):
    • Temper O (Annealed): Low yield strength, highest elongation (typically ≥ 30%), representing the optimal condition for deep drawing operations.
    • Temper H14 (Half Hard): Strain-hardened, offering higher strength (Tensile Strength ~100-130 MPa) and moderate formability, suitable for shallow-formed parts requiring some rigidity.

4. Analysis of Primary Application Fields

Its applications are logically derived from its core properties:

  • Cookware Manufacturing (Primary Application): Leverages its high thermal conductivity​ and superior deep drawability​ for producing pot bodies, pressure cooker inner pots, and rice cooker inner pots. After anodizing or coating with non-stick composites, it meets requirements for safety, durability, and cooking efficiency.
  • Lighting & Reflectors: Benefits from its high reflectivity​ and excellent anodizing response, making it widely used for LED lamp covers, reflector housings, and luminaire shells. Surface treatment can achieve reflectivity over 80%.
  • Traffic Signs & Plates: Utilizes its good atmospheric corrosion resistance, adequate strength, and ease of sheet metal fabrication, making it an ideal substrate for traffic signs and road plates.
  • Electronics & General Hardware: Commonly used for heat sinks, capacitor cases, and other stamped parts requiring electrical/thermal conductivity or specific forming characteristics.

5. Selection Advantages & Comparative Analysis

Compared to other common aluminum circle grades, 1050 offers the best balance between performance and cost:

Comparison Aspect 1050 Aluminum Circle 1060 Aluminum Circle 3003 Aluminum Circle (Al-Mn Series)
Key Characteristic​ Optimal balance of performance vs. cost​ Higher purity, slightly better thermal/electrical conductivity Manganese addition provides higher strength
Formability​ Excellent, best for deep drawing in O temper​ Excellent Good, but inferior to 1050/1060
Strength​ Relatively Low Lowest Higher​ (~1.5x that of 1050)
Thermal Conductivity​ Very Good (222 W/m·K) Better​ (~230 W/m·K) Good (~193 W/m·K)
Cost​ Cost-Effective​ Slightly Higher Moderate

6. Key Quality Control Parameters

Professional procurement and incoming inspection should focus on:

  • Dimensional Tolerances: Thickness tolerance (e.g., ±0.05mm), Diameter tolerance.
  • Mechanical Properties: Elongation​ is the key indicator for predicting deep drawability; O temper material should typically be ≥ 30%.
  • Formability Indicators: Earing Value; a lower value indicates less edge waviness after drawing, signifying lower material anisotropy.
  • Microstructure & Surface: Grain size uniformity; surface must be free of scratches, roll marks, and oil stains.
  • Applicable Standards: ASTM B209, EN 485-2, GB/T 3880.1, etc.

7. Selection Guide Summary

The 1050 aluminum circle has established dominance in industries like cookware, lighting, and signage due to its unmatched deep drawability, excellent thermal/electrical conductivity, superb surface treatment potential, and significant cost-effectiveness. For material selection:

  • For extreme deep drawing or spinning operations, Temper O​ 1050 aluminum circle is the primary choice.
  • For parts requiring some structural rigidity​ with shallow forming, Temper H14 or H24​ can be selected.
  • For cookware requiring high-temperature brazing, its melting point limitation must be considered, ensuring compatibility with coatings or composite bases.

Amidst trends towards lightweight manufacturing and the green circular economy, 1050 aluminum circle, as a high-performance, fully recyclable engineering material, continues to have broad application prospects.

Properties of the aluminum circle:

Aluminum circle is suitable for many markets, including cookware, automotive and lighting industries, etc., thanks to good product characteristics:

  • Low anisotropy, which facilitates deep drawing
  • Strong mechanical properties
  • High and homogeneous heat diffusion
  • Ability to be enameled, covered by PTFE (or others), anodized
  • Good reflectivity
  • High strength-to-weight ratio
  • Durability and resistance to corrosion

Aluminum Circles Process

Ingot/Master Alloys — Melting Furnace – Holding Furnace — D.C. Caster — Slab —- Scalper — Hot Rolling Mill – Cold Rolling Mill – Punching – Annealing Furnace — Final Inspection – Packing — Delivery

  • Prepare the master alloys
  • Melting furnace: put the alloys into the melting furnace
  • D.C.cast aluminum ingot: To make the mother ingot
  • Mill the aluminum ingot: to make the surface and side smooth
  • Heating furnace
  • Hot rolling mill: made the mother coil
  • Colding rolling mill: the mother coil was rolled as the thickness you want to buy
  • Punching process: become the size what you want
  • Annealing furnace: change the temper
  • Final inspection
  • Packing: wooden case or wooden pallet
  • Delivery

Quality Control

Assurance Below inspection will be done in the production.

  • a. ray detection—RT;
  • b. ultrasonic testing—UT;
  • c. Magnetic Particle Testing-MT;
  • d. penetration testing-PT;
  • e. eddy current flaw detection-ET

1) Be free from Oil Stain, Dent, Inclusion, Scratches, Stain, Oxide Discoloration, Breaks, Corrosion, Roll Marks, Dirt Streaks, and other defects which will interfere with use.

2) Surface without black line, clean-cut, periodic stain, roller printing defects, such as other gko internal Control standards.

Aluminum discs packing:

Aluminum circles can be packed by export standards, covering with brown paper and plastic film. Finally, the Aluminium Round is fixed on a wooden pallet/wooden case.

  • Put the driers side the aluminum circle, keep the products dry and clean.
  • Use clean plastic paper, pack the aluminium circle, keep good sealing.
  • Use the snakeskin paper, pack the surface of the plastic paper, keep good sealing.
  • Next, there are two ways of packaging: One way is wooden pallet packaging, using the crusty paper packing the surface; Another way is wooden case packaging, using the wooden case packing the surface.
  • Finally, lay the steel belt on the wooden box’s surface, keeping the wooden box fastness and secure.

Aluminum circle of Henan Huawei Aluminum. meet the export standard. Plastic film and brown paper can be covered at customers’ needs. What’s more, a wooden case or wooden pallet is adopted to protect products from damage during delivery. There are two kinds of packaging, which are eye to wall or eye to the sky. Customers can choose either of them for their convenience. Generally speaking, there are 2 tons in one package, and loading 18-22 tons in 1×20′ container, and 20-24 tons in 1×40′ container.

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In order to move with the times, HWALU keeps introducing the state of the art equipment and technique to improve its competitiveness. Always adhere to the business philosophy of quality as the center and customer first, to provide the highest quality aluminum disc circle series products to all parts of the world. More …