Metal is a class of materials that have many useful properties, such as high strength, ductility, and conductivity, which make them widely used in various industries. Metals are the elements that have metallic bonding, which is characterized by the sharing of electrons between atoms in a lattice structure. Some common metals include copper, iron, aluminum, gold, silver and titanium.
Metals can be categorized into two main groups: ferrous and non-ferrous. Ferrous metals contain iron as the main component and include materials like steel and cast iron. Non-ferrous metals, on the other hand, do not contain iron as the main component and include materials like aluminum, copper, and titanium.
Metals have a wide range of applications, from construction materials like steel and aluminum for buildings and bridges to electronic components like copper wiring and aluminum capacitors in electronic devices. Metals are also used in transportation industries for manufacturing automobiles, airplanes, and trains as well as in medical devices such as implants and surgical instruments.
One of the most important properties of metals is their ability to be formed and shaped using various manufacturing techniques such as casting, forging and extrusion. This property makes metals highly versatile and useful in a variety of industries.
However, metals are also subject to various environmental and chemical degradation processes such as corrosion and oxidation. Therefore, metals are often coated with other materials, such as paint or plating to protect them from these processes and extend their lifespan.
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