A Guide to Cladding Materials


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

When doing cladding, most use steel and aluminum. Sometimes stainless steel and weathering steels are used. Other materials are used in particular circumstances which includes copper, bronze, and titanium.

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. The basic difference between steel and aluminum lie in their strength, durability and cost of each material. Know more about metals at https://en.wikipedia.org/wiki/Metal.

Before panel manufacturing steel cladding, they are first pre-galvanized and pre-painted in coil form.  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.  There are various thicknesses and it is usually 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.  Zinc aluminum alloy has better durability in polluted or coastal areas.  The corrosion performance on premium pre-finished metals are improved. In order to improve appearance and durability the steel is coated with a variety of finishes. The premium coating is a tough and durable coating.  It is usually the case that difficult environmental conditions exist outside of the sheets. And, the underside of the sheet can be subject to condensation and trapped moisture so there is a need to apply coating to this face at various specifications to suit both cost and environmental conditions. Visit homepage here!

Aluminum is known for its corrosion resistance.  When bare aluminum reacts with oxygen, it results in a hard, dense layer that prevents corrosion.  Cladding aluminum is generally in the form of an allow with magnesium and manganese.  Aluminum has sufficient durability on its own but it can be improved by adding an organic or metallic coating.

The relative merits of both steel and aluminum is difficult to compare.  This often depends on the particular circumstances.  Corrosion resistance is the greatest advantage of aluminum, but durability is the advantage of painted steel.  Though aluminum is lighter, it is not stronger than steel so it needs deeper or thicker profiles to span the same distance between purlins. Start here!

Aluminum is actually more expensive than steel because when it is produced, greater quantities of energy is required than what is required with steel.  Steel resists impact more than aluminum so when there are temperature changes, steel move less than aluminum.  It performs better in fire because it has a higher melting point.  There are certain types of aluminum panels that can be formed more easily than steel due to its low melting point.


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