What are the common metal parts

The materials of metal parts can be divided into two categories: steel and non-ferrous metals (or 2113 non-ferrous metals). The alloy of iron with carbon content of 2% to 4.3% in 5261 is cast iron, and the alloy of iron with carbon content of 4102 in the range of 16530.03% to 2% is steel. In Fe-C alloys, various alloying elements are purposefully added to improve the strength, hardness, wear resistance and corrosion resistance of steel. Commonly used alloying elements are Si, Mn, Cr, Ni, Mo, W, V, Ti, Nb, B, etc., forming a variety of alloy cast iron or alloy steel. Non-ferrous alloys can be roughly divided into: light alloys (aluminum alloys, titanium alloys, magnesium alloys, beryllium alloys, etc.), heavy non-ferrous alloys (copper alloys, zinc alloys, manganese alloys, nickel alloys, etc.), low melting point alloys (lead, tin, Cadmium, bismuth, indium, gallium, mercury and their alloys), refractory alloys (tungsten alloys, molybdenum alloys, niobium alloys, tantalum alloys, etc.), precious metals (gold, silver, platinum, palladium, etc.), rare earth metals, etc. Among them, the most widely used is aluminum alloy. According to statistics, 71% of the entire structure of the Concorde supersonic aircraft is made of special aluminum alloys; high-speed trains, automobiles and other vehicles have an increasing demand for aluminum profiles; more and more aluminum materials are used for architectural decoration. It is beautiful and corrosion resistant; the amount of aluminum wires in power systems and household appliances exceeds copper wires; aluminum foil can be used for packaging food and cigarettes; aluminum alloy can also be used as capacitors.