Approx. Rs 125 / Gram
Approx. Rs 350 / Number
Approx. Rs 400 / Kilogram
aluminium is used in a huge variety of products including cans, foils, kitchen utensils, window frames, kegs and aeroplane parts. This is because of its particular properties. It has low density, is non-toxic, has a high thermal conductivity, has excellent corrosion resistance and can be easily cast, machined and formed. It is also non-magnetic and non-sparking. It is the second most malleable metal and the sixth most ductile.
it is often used as an alloy because aluminium itself is not particularly strong. Alloys with copper, manganese, magnesium and silicon are lightweight but strong. They are very important in the construction of aeroplanes and other forms of transport.
aluminium is a good electrical conductor and is often used in electrical transmission lines. It is cheaper than copper and weight for weight is almost twice as good a conductor.
when evaporated in a vacuum, aluminium forms a highly reflective coating for both light and heat. It does not deteriorate, like a silver coating would. These aluminium coatings have many uses, including telescope mirrors, decorative paper, packages and toys.
Approx. Rs 750 / Kilogram
historically, copper was the first metal to be worked by people. The discovery that it could be hardened with a little tin to form the alloy bronze gave the name to the bronze age.
traditionally it has been one of the metals used to make coins, along with silver and gold. However, it is the most common of the three and therefore the least valued. All us coins are now copper alloys, and gun metals also contain copper.
most copper is used in electrical equipment such as wiring and motors. This is because it conducts both heat and electricity very well, and can be drawn into wires. It also has uses in construction (for example roofing and plumbing), and industrial machinery (such as heat exchangers).
copper sulfate is used widely as an agricultural poison and as an algicide in water purification.
copper compounds, such as fehling’s solution, are used in chemical tests for sugar detection.
Approx. Rs 1,850 / Meter
Approx. Rs 1,500 / Kilogram
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