Characteristics and differences between pure aluminium and aluminium alloys for sale Haomei(1)

Aluminium is currently the more widely used material for electronic heat sinks. The properties of aluminium are ideally suited to the manufacture of heat sinks. It has good thermal conductivity and is cheap. And as we all know, aluminium for sale in the aluminium industry is divided into many grades, which are pure aluminium and alloy aluminium. What are their differences and characteristics? Below we introduce the characteristics of pure aluminium used in the heat dissipation industry.

Let's start with the density of pure aluminium. Pure aluminium is a very light metal with a density of 2.71 g/cm3, about 1/3 that of pure copper. next we look at its electrical and thermal conductivity. The thermal and electrical conductivity of aluminium is good. When the cross-section and length of aluminium are the same as copper, the electrical conductivity of aluminium is about 61% of that of copper, and if the weight of aluminium and copper are the same er cross-section is different (equal length), the electrical conductivity of aluminium is 200% of that of copper. After understanding the physical properties we look at its chemical properties together. Pure aluminium has good resistance to atmospheric decay, because its surface is easy to form a dense aluminium oxide film, which can prevent further oxidation of internal metals, aluminium and concentrated nitric acid, organic acids and food basically do not react. Aluminium is face-centred cubic structure, industrial pure aluminium plasticity is very high (ψ = 80%), can easily withstand a variety of molding process, but its strength is too low, σb about 69Mpa, so pure aluminium can only through cold deformation to strengthen or alloying to improve its strength before it can be used as a structural material; aluminium is non-magnetic, non-sparking materials, and reflective performance is good, can reflect both visible light, can also reflect ultraviolet; aluminium impurities are The higher the content of impurities, the lower its electrical conductivity, corrosion resistance and plasticity.

Do you now understand the characteristics of pure aluminium? We can also refer to the properties of pure aluminium when choosing a 1-series aluminium sheet, as the 1-series aluminium sheet has a very high aluminium content and therefore the properties of the two are similar. If you need pure aluminium products, please contact us at Haomei!