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Corrosion resistance
The density of aluminum profiles is only 2.7g / cm3, which is about 1/3 of the density of steel, copper or brass (respectively 7.83g / cm3, 8.93g / cm3). Under most environmental conditions, including air, water (or brine), petrochemistry, and many chemical systems, aluminum can exhibit excellent corrosion resistance.
Aluminum profiles are often selected because of their excellent electrical conductivity. On the basis of equal weight, the electrical conductivity of aluminum is nearly twice that of copper.
Thermal conductivity
The thermal conductivity of aluminum alloy is about 50-60% of copper, which is beneficial to the manufacture of heat exchangers, evaporators, heating appliances, cooking utensils, and automobile cylinder heads and radiators.
Aluminum profiles are non-ferromagnetic, which is an important characteristic for the electrical and electronic industries. Aluminum profiles are not spontaneously combustible, which is important for applications involving handling or contact with flammable and explosive materials.
The machinability of aluminum profiles is excellent. In various deformed aluminum alloys and cast aluminum alloys, as well as in the various states that these alloys have after production, the machining characteristics vary considerably, which requires special machine tools or technologies.
The specific tensile strength, yield strength, ductility and corresponding work hardening rate dominate the allowable deformation changes.
Aluminum is extremely recyclable, and the characteristics of recycled aluminum are almost the same as those of primary aluminum.