During World War II, competition between these two metals heated up. Copper became scarce due to its use in shells and bullet casings. As a result of their similarities, several industries chose Aluminium as the closest alternative. Aluminum was plentiful at the time, reasonably priced, and less expensive than Copper. As a result, it quickly became the metal of choice for high-power transmission power lines. Almost all transmission lines used by significant manufacturers today are made of Aluminium.
Although copper wound transformers are often smaller, there are many debates about which metal performs best, posing the age-old question: “Are aluminum winding’s better than copper winding’s?”
What Is Copper?
Copper is a mineral and an essential element in our daily lives. The Periodic Table of Elements has the atomic number 29. “Cu” is the symbol for Copper. It has the malleability, ductility, electrical and thermal conductivity, and corrosion resistance. Because of these properties, it is widely used in industry. Copper can be found in various minerals, including native copper sulfides like chalcocite, bornite, digenite, covellite, and chalcopyrite, copper sulfosalts like enargite and tetrahedrite-tennantite, copper carbonates like malachite and azurite, and copper oxides like cuprite and tenorite.
What Is Aluminium ?
Aluminum (Al), also spelled Aluminum, is a chemical element that is a lightweight silvery-white metal in Periodic Group 13. Aluminum is the most common nonferrous metal and the most abundant metallic element in the Earth’s crust. Aluminum is never found in its metallic form in nature due to its chemical activity, but its compounds are found to varying degrees in almost all rocks, vegetation, and animals. Aluminum is concentrated in the outer 16 km (10 miles) of the Earth’s crust, accounting for about 8% of the total weight; only oxygen and silicon are more abundant.
Copper vs Aluminium
Aluminum and Copper are helpful in the production of wires for electrical conductivity. The primary distinction between Aluminium and Copper is that Copper is a heavier metal with a reddish-orange appearance, whereas Aluminium is a lighter metal with a silvery grey appearance.
How are they made?
mostly mined using open-pit or underground methods. Open-pit mining, which accounts for roughly 90% of copper production, extracts ores close to the Earth’s surface through graduated steps that lead into the Earth’s crust.
Found in igneous rocks primarily as aluminosilicates in feldspars, feldspathoids, and micas; in the soil as clay; and, after further weathering, as bauxite and iron-rich laterite. The primary aluminum ore is bauxite, a mixture of hydrated aluminum oxides. Crystalline aluminum oxide (emery, corundum), which occurs in a few igneous rocks, is mined as a natural abrasive or as rubies and sapphires in finer varieties. Aluminum can also be found in other gemstones like topaz, garnet, and chrysoberyl. Alunite and cryolite are two commercially essential aluminum minerals, among many others.
Copper is a reddish metal with a cubic crystalline structure that is face-centered. Because of its band structure, it reflects red and orange light and absorbs other visible spectrum frequencies, giving it a nice reddish color. It is malleable, ductile, and an excellent heat and electricity conductor. Aluminum is a silvery-white, lightweight metal. It is pliable and malleable.
The melting point of Copper is comparatively higher than Aluminum
It is 1084°C (1983°F)
The melting point of Aluminium is 660°C (1220°F)
Has unique physical properties. It is a soft and malleable metal. It is, in fact, the second most malleable metal. It is a non-toxic metal as well. As a result, Aluminium has a wide range of household applications. Aluminum is used in everyday items such as cans, foil, and kitchen utensils.
Found in electrical equipment like wiring and motors. This is because it conducts heat and electricity extremely well and can be drawn into wires. It is also used in construction (such as roofing and plumbing) and industrial machinery (such as heat exchangers).
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