Major Applications of Copper
Copper and its alloys produce some of the essential materials in keeping homes, commerce, and industries running. They meet the demands of modern life in various ways. They are used in making durable roofing and cladding, and small components providing essential services in home appliances and industrial equipment.
More than 50 percent of copper produced globally is used for electrical applications. The conductivity and reduced thermal expansion coefficient of copper makes it a good material for manufacturing power lines. This increase took place after the discovery of copper as a better electrical conductor than aluminum. Many cases of fire due to overheating of wires are blamed to aluminum’s high thermal expansion coefficient. Thus, power line manufacturers today prefer copper to prevent similar incidents.
Aside from cables, most generators, transformers, motors, and busbars are also made of copper and copper alloys. They convey electricity safely and efficiently to commercial buildings and homes because of their unique properties. While highly ductile, this metal can be drawn into even smaller wires, providing circuitry and contacts for computers, televisions and cell phones. The use of copper instead of other metals in generating and transmitting energy also reduces the production of carbon dioxide.
Only around 30 percent of copper products go to construction. It is often used in plumbing, cladding and roofing. Although strong and corrosion-resistant, it is not ideal in reinforcing main structural components despite its high cost per volume. Manufacturers take advantage of copper’s malleability to produce copper sheet for roofing and cladding. Copper roofs are tremendously durable that some last for over a hundred years without maintenance.
Copper and most of its alloys are light and maintenance-free. The natural reaction of copper to oxidation—creating a protective green film on its surface over time—eliminates the need of copper roofing for regular cleaning and coating. A copper sheet for roofing is also highly recyclable that many resort to reprocess scrap copper for other essential applications.
Less than 10 percent of copper usage is accounted to transportation. Most wiring in a vehicle’s harness system are made of copper. Without them, the current generated by the battery will not power up the lights, central locking, and satellite navigation system. Aside from wires, there are also copper rods used as components of the car engine and electric motors. Its heat resistance benefits fuel deflagration efficiency, which reduces chance of overheating.
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