Metals
Metals are elements that generally have good electrical and thermal conductivity.Many metals have high strength, high stiffness, and have good ductility. Some metals, such as iron, cobalt and nickel are magnetic.At extremely low temperatures, some metals and intermetallic compounds become superconductors.
Types of Materials
The most important properties of metals include density, fracture toughness, strength and plastic deformation. The atomic bonding of metals also affects their properties. In metals, the outer valence electrons are shared among all atoms, and are free to travel everywhere.
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