System Overview: 1050 Aluminum Circle/Disc (Aluminum Round Blank)

The 1050 Aluminum Circle (also known as Aluminum Disc) is a circular blank made from commercially pure aluminum (1000 series). With high aluminum content (≥99.5%), it offers excellent formability and surface treatment capabilities, making it an essential raw material for deep-drawn products like cookware, lighting fixtures, and packaging.

1. Core Identification: Composition, Temper, and Specifications

  1. Chemical Composition & Standards
    • Primary Standards: GB/T 3190, ASTM B209, EN 573.
    • Core Composition: Aluminum (Al) content not less than 99.5%, with very low levels of impurities such as Silicon (Si) and Iron (Fe). No alloying elements are intentionally added.
    • Key Feature: High purity with strict control over total impurities, ensuring excellent electrical conductivity, thermal conductivity, and corrosion resistance.
  2. Common Supply Tempers
    • O Temper (Annealed): Soft material with superior ductility, ideal for deep drawing and stamping​ processes (e.g., pot stretching).
    • H14 / H18 Temper (Strain-Hardened): Cold-worked for increased strength and hardness, with reduced elongation. Suitable for shallow forming or parts requiring higher rigidity.
  3. Typical Specification Range
    • Thickness: 0.3 mm – 10.0 mm
    • Diameter: 100 mm – 1650 mm (Custom sizes available)
    • Surface Finish: Bright, mill (satin), coated, etc.

8011 aluminum circles

2. Key Properties and Characteristics

Property Category Specific Performance
Physical Properties​ Low density (~2.71 g/cm³), excellent electrical (~58% IACS) and thermal conductivity (~229 W/(m·K)).
Corrosion Resistance​ Forms a natural, protective oxide film in air, offering good corrosion resistance.
Mechanical Properties​ Moderate strength, adjustable via cold working. ~95 MPa (O temper), ~120 MPa (H14). Not heat-treatable.​
Workability​ Excellent deep drawability, stamping, bending, and weldability (TIG preferred).​ Anodizes uniformly with a fine finish.

3. Primary Production Process

Aluminum Ingot → Melting & Continuous Casting into Slab → Hot/Cold Rolling to Gauge → Continuous Annealing (to control temper) → Slitting/Cross Cutting → CNC Punching/Shearing into Circles → Deburring, Cleaning, Surface Treatment → Inspection & Packaging.

4. Typical Applications

  • Cookware & Utensils: Non-stick cookware body/base, pots, baking sheets, kettle base, lids.
  • Lighting & Electrical: LED lamp reflectors, shades, heat sink substrates, capacitor housings.
  • Packaging & Canisters: Food cans, ointment boxes, cosmetic cases, small chemical pails.
  • Decorative & Hardware: Badges, nameplates, instrument panels, general structural components.

5. Comparison with Common Similar Alloys

Alloy Al Content Core Differences & Characteristics Typical Application Preference
1050​ ≥99.5% Best balance of purity and formability.​ Strict impurity control, excellent all-around workability, cost-effective. Various deep-drawn cookware, kitchenware, general hardware.
1060​ ≥99.6% Slightly higher purity than 1050, offering better electrical/thermal conductivity at a slightly higher cost. Electrical components, heat sinks where higher conductivity is critical.
3003​ ~98% Aluminum-Manganese alloy.​ Significantly higher strength and corrosion resistance than 1050. Can be strengthened by cold working. Chemical containers, ducts, architectural trim requiring higher strength.