Summary:Materials from metal parts can be divided into two categories: steel from ferrous and non-ferrous me...
Materials from metal parts
can be divided into two categories: steel from ferrous and non-ferrous metals (or non-ferrous metals). 5261 The alloy of iron with a carbon content of 2% to 4.3% is cast iron, and the alloy of iron with a carbon content of 16530.03% to 2% is generally steel.
In Fe-C alloys, various alloying elements are added purposefully 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 various 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 alloy, molybdenum alloy, niobium alloy, tantalum alloy, etc.), precious metals (gold, silver, platinum, palladium, etc.) and rare earth metals. 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; the demand for aluminum profiles in high-speed trains, automobiles and other means of transportation is increasing; more and more aluminum materials are used for architectural decoration. Both beautiful and corrosion-resistant; aluminum wires are used more than copper wires in power systems and household appliances; aluminum foil can be used to package food and cigarettes; aluminum alloys can also be used as capacitors, etc.