Stainless steel: mainly used for mechanical parts requiring high resistance to corrosion, especially if they come into contact with fresh water or humid atmospheres. This makes it the ideal material for use in the food industry. The most common alloys are AISI 304, AISI 303, AISI 316 and AISI 420.
C45: a carbon steel particularly suitable for machining, it gives high resistance and is easy to machine. Hardness and durability can be increased by heat treating. This material is used for most mechanical components, especially shafts.
Structural steel: more commonly known as iron, structural steel is used for components and constructions that are not subject to high levels of stress. It has excellent workability properties and is inexpensive and easy to weld. Poor resistance to water and humidity. The most common alloys are FE 360, FE 430 and FE 510.
Aluminium: aluminum alloys are used in many industry sectors. Aluminium is an extremely ductile material that is highly adaptable to machining processes and is suitable for making components that are light and conduct electricity and heat well. The AL 6082 alloy is extremely resistant to corrosion and can be further treated with paints or processes such as anodising to increase its anti-corrosion properties.
Bronze: an alloy of copper and another metal, usually tin. The most common bronze alloy used in mechanical processing is B14, which is used to make rollers, bushes, bearings, flanges, junctions and many other small mechanical parts. Other types of bronze can be made from alloys of copper with aluminium, nickel and beryllium; the type of bronze used depends on the intended usage of the component. It has a lower mechanical strength than steel but is more resistant to corrosion, especially from sea water. It is also a better conductor of heat and electricity.
Brass: an alloy of copper and zinc. This is the best material for making screws, bolts and gears. Like all copper alloys it is considered antibacterial, so it is also used to make items that are handled frequently, such as handles, taps, and surfaces that come into contact with food or liquids. Its mechanical properties are largely similar to those of bronze, both being alloys of copper. It can also be fused with other metals to obtain specific technical properties. It is less expensive than bronze but more difficult to machine.
Cast iron: a ferrous material with high thermal conductivity. It has a higher specific density than common structural iron and is used for making flanges and other components. This material is not widely used since quality and workability are inferior to common iron.
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