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Posted by on September 22, 2018

 

What determines the best materials for cladding includes their cost, manufacturing parameters, durability, and appearance.

 

Steel and aluminum are the most common materials used for cladding. It also includes stainless steel and weathering steels. IN certain circumstances, copper, bronze, and titanium cladding are also used.

 

When people choose materials for cladding, they would often choose steel and aluminum. They are used extensively in all of the three classifications of metal cladding types. Strength, durability, and cost of materials define the basic difference between steel and aluminum. View here!

 

Steel cladding undergoes the process of being pre-galvanized and pre-painted in coil form before the panel is manufactured.  When steel is being galvanized, it is dipped into molten zinc or zinc aluminum alloy and a layer of metallic coating is bonded to form a hard, durable outer layer.  When the thickness of galvanized steel is measure, it is expressed as the weight of zinc or zinc aluminum per square meter on both sides of the sheet.  275g/m2 and 255g/m2 are the coating weights for zinc and zinc aluminum coating, respectively.  You should use zinc aluminum alloy in polluted or coastal areas because it has better durability.  Premium pre-finished metals improves its corrosion performance with the use of zinc aluminum alloy. The steel can then be coated with different finishes for improved appearance and durability. The premium coating is a tough and durable coating.  It is usually the case that difficult environmental conditions exist outside of the sheets. But, the underside of the sheet may be subjected to condensation and trapped moisture so it is normal to apply coating to this face at various specifications to suit both cost and environmental conditions. Get more facts about metals at https://www.britannica.com/science/metal-chemistry.

 

One good quality of aluminum is its resistance to corrosion.  Corrosion is inhibited when bare aluminum reacts with oxygen to form a hard, dense layers.  An aluminum alloy is formed by combining it with magnesium and manganese to form cladding aluminum.  Although aluminum is already durable on its own but it you add an organic or metaling coating, then the durability is improved. Learn here!

 

It is difficult to compare the relative merits of steel and aluminum.  Their advantages are seen in particular circumstances.  Aluminum is inherently more corrosion resistant than steel, but painted steel is durable.  Aluminum is lighter but not as strong as steel so profiles have to be deeper or thicker to span the same distances between purlins.

 

Because of the greater amount of energy it requires to produce aluminum compared to steel, it make it more expensive.   Steel is more impact-resistant and moves less than aluminum when subject to temperature changes.  The melting point of steel is higher so it performs better in fire.  Aluminum has a low melting point which allows certain types of panels to be formed more easily than steel.

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