Heat treatment knowledge of industrial pure aluminum

Industrial use of pure aluminum alloy, physical and chemical properties of pure aluminum, characteristics of pure aluminum

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Industrial Pure Aluminum

1. Pure aluminum physical properties

  • Melting point 660.24℃; density 2.7×103kg/m3;
  • Face-centered cubic lattice a=0.4049nm; atomic diameter 0.286 nm
  • Relative conductivity 62% SIGC (International Annealed Copper Standard)
  • Resistivity 2.66×10-8Ωm (ohm meter) (99.9%Al);

2. Pure aluminum chemical properties

  • The chemical activity of aluminum is extremely high, the standard electrode potential (-1.67 volts).
  • Aluminum forms a 5-10nm thick Al2O3 protective film on the surface in the air, which is corrosion-resistant in the atmosphere.
  • It has extremely high stability in concentrated nitric acid, and hardly reacts with organic acids and food.
  • Unstable in sulfuric acid, hydrochloric acid, alkali and salt.

3. Pure aluminum features

  • light in mass
  • Excellent electrical conductivity, heat transfer and plastic deformation properties
  • Good corrosion resistance in the atmosphere
  • Low strength is not suitable for structural materials

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