Material properties of aluminum alloys
Aluminum’s density (ρ = 2.7g/cm3), iron is about 1 /3 of the low melting point (660 ℃), aluminum is face-centered cubic structure , it has a high plasticity (δ: 32 ~ 40%, ψ: 70 ~ 90%), ease of processing , can be made into various shapes, plates , good corrosion resistance ; but the strength of aluminum is low , annealed σb value of approximately 8kgf/mm2, it is not suitable for structural materials. Through long-term production practice and scientific experiments , gradually adding alloying elements and heat treatment and other methods to strengthen aluminum, which has a series of aluminum . Add Jian Teng metal
Add some elements to form alloys while maintaining the advantages of lightweight aluminum with high intensity while , σb values of up to 24 ~ 60kgf/mm2. This makes the " strength " ( strength and weight ratio σb / ρ) is better than a lot of steel, an ideal structural material, widely used in machinery, transportation machinery , power machinery and aviation industries , the aircraft fuselage , skin, compressor, often made of aluminum alloy to reduce weight . Using aluminum instead of steel materials , welding, reduce structural weight by more than 50 %.
Low -density aluminum alloy , but the intensity is relatively high, close to or exceed the high quality steel, plastic , can be processed into a variety of profiles, with excellent electrical conductivity, thermal conductivity and corrosion resistance , widely used in industry , second only to the use of steel . Some aluminum alloys can be heat-treated to obtain good mechanical properties, physical properties and corrosion resistance . 2008 Beijing Olympic Torch "clouds" is made of aluminum alloy .

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