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What is aluminum plate, the thickness range of aluminum plate

What is an Aluminum Plate and Its Thickness Range

An aluminum plate is a flat, rectangular sheet made from aluminum ingots through rolling and processing. It typically has a thickness greater than 0.2mm and less than 500mm, with a width of over 200mm and a length under 16 meters. In modern manufacturing, especially with the development of large-scale equipment, aluminum plates with widths up to 600mm are also commonly used. Aluminum plates can be categorized into several types, including pure aluminum plates, alloy aluminum plates, thin plates, medium and thick plates, and patterned aluminum plates. They are widely used in various industries due to their lightweight, corrosion resistance, and high strength-to-weight ratio.


Common Classification of Aluminum Sheets

There are two main ways to classify aluminum sheets: 1. **Based on Alloy Composition** - High-purity aluminum plate: Made from aluminum with a purity of over 99.9%. - Pure aluminum plate: Composed mainly of pure aluminum. - Alloy aluminum plate: Contains aluminum mixed with other elements such as copper, manganese, silicon, magnesium, etc. - Clad or welded aluminum plate: Special-purpose material created by combining different materials. - Aluminum-clad sheet: A thin layer of aluminum is applied to the surface for specific uses. 2. **Based on Thickness (in mm)** - Sheet (aluminum sheet): 0.15–2.0 mm - Standard sheet (aluminum sheet): 2.0–6.0 mm - Aluminum plate: 6.0–25.0 mm - Thick plate (aluminum plate): 25–200 mm

Applications of Aluminum Plates
Aluminum plates have a wide range of applications, including:

  • Lighting systems
  • Solar reflectors
  • Building exteriors and interiors (ceiling, walls)
  • Furniture and cabinets
  • Elevators and signage
  • Photo frames and packaging
  • Household appliances like refrigerators, microwave ovens, and audio devices
  • Aerospace and military use (e.g., aircraft, spacecraft, satellites)
  • Mechanical parts and mold manufacturing
  • Chemical and insulation pipeline coatings
  • High-quality shipboards

Classification of Aluminum Sheets by Grades
Aluminum alloys are classified into different series based on their composition. For example, 7075-T651 is a common grade of aluminum plate. The number "7" indicates that it belongs to the aluminum-zinc-magnesium-copper alloy group.

The classification of aluminum alloys includes nine main groups:

  1. 1 Series: Industrial pure aluminum
  2. 2 Series: Aluminum-copper alloys
  3. 3 Series: Aluminum-manganese alloys
  4. 4 Series: Aluminum-silicon alloys
  5. 5 Series: Aluminum-magnesium alloys
  6. 6 Series: Aluminum-magnesium-silicon alloys
  7. 7 Series: Aluminum-zinc-magnesium-copper alloys
  8. 8 Series: Other special alloys
  9. 9 Series: Miscellaneous alloys

Chemical Composition and Properties
The chemical composition of a typical aluminum plate may include:

  • Aluminum (Al): Balance
  • Silicon (Si): 0.25%
  • Copper (Cu): 0.10%
  • Magnesium (Mg): 2.2–2.8%
  • Zinc (Zn): 0.10%
  • Manganese (Mn): 0.10%
  • Chromium (Cr): 0.15–0.35%
  • Iron (Fe): 0.4%

Its mechanical properties include:

  • Tensile strength (σb): 170–305 MPa
  • Yield strength (σ0.2): ≥65 MPa
  • Elastic modulus (E): 69.3–70.7 GPa
  • Annealing temperature: 345°C
Aluminum plates are not only versatile but also highly adaptable to different industrial needs, making them one of the most widely used materials in modern engineering and construction.

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