Different Materials used in the Manufacturing of Ventilation System
                     Different Materials used in the Manufacturing 
of Ventilation System
David Bowie
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Every mechanical component or a device is made up of material. Similarly 
ventilation system parts are also made of metal alloys, fiber, wood etc. Main 
parts of the ventilation system are made of metal alloys which have high 
strength and low density.
Alloy steels
 They usually have good hardness, less distortion, greater ductility, greater 
temperature resistance, greater stress relief, easy of machining, high elastic 
ratio and high endurance strength. Steel alloys are more in number which 
means alloy steels have more number of compositions.
 The main advantage of the steel based alloy is that by changing the amount 
of the alloying element we can achieve a varying property.
 The reason for using the steel to make ventilation parts is that, the 
contaminated air will have many different things inside it, so that it will 
damage the given part.
 Steel alloys are vulnerable to corrosion, so they are usually preferred in a 
place where they are less exposed to moisture or any fluid particles.
Aluminum alloys
 Aluminum is the lightest weight element and the alloys composed of the 
aluminum are also light weight. So when the parts made of this element 
having less weight are placed on the roof of the working surface it will have 
very less impact on the roof.
 Some properties of aluminum are low density, high strength, superior 
malleability, easy machining, excellent corrosion resistance and good 
thermal conductivity.
 Due to these characters, the aluminum alloy is better material to use in 
ventilation system.
 The main advantage of the aluminum metal is it can form matrix which 
provides a support for the reinforcement in the aluminum alloy.
 In high temperature applications cobalt and nickel alloy are used. 
Aluminum alloys are used in making the ventilation parts like vanes or 
turbine, outer sheet wrapped around the parts of vanes, parts which are 
exposed to the moisture or any fluid particles etc.
 So, aluminium alloys are highly preferable in conditions with more 
moisture content when compared with steel alloys.
 When costs of both the alloys are compared, aluminum alloy is costly when 
compared to the steel alloys. As aluminum is more malleable when 
compared to the steel it is easier to machine the aluminum parts and make 
them into sheet metals.
 If we compare the weights of the two alloys, steel is nearly 2.5 times denser 
than the aluminum alloy.
 When installing the ventilation system on the roof top it is advisable to have 
a light weight parts on the roof top.
Other materials
 There are other type of materials too that are used in the ventilation system. 
They are polymers and wood.
 Polymer tubes are used in order to reduce the weight of the entire 
ventilation system or to reduce the effect of corrosion in the tubes.
 Wood is a bad conductor of heat so wood is wrapped around the parts where 
heat is generated. This keeps the heat dissipation low so that the other parts 
of the system do not get heated.
 The other parts of the ventilation system like shutter are made of poly 
elements which are light in weight.
The properties of materials also determine the type of ventilation system that 
needs to be installed in the industry in order to have an efficient system with 
less maintenance.
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