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The Best Advice on Iron I’ve found

Aluminum and Steel: The Best Cladding Metals

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. Copper, bronze, and titanium are used for cladding in particular circumstances.

The most popular cladding materials are steel and aluminum. In the classifications of metal cladding types, these two are extensively used. If you were to compare both steel and aluminum, their strength, durability, and cost of materials will provide you with the basic differences.

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. 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. The minimum coating weight on cladding panels is typically 275g per square meter for zinc and 255 g per square meter for zinc aluminum. 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. Your steel panel will be tough and durable with premium coating. It is usually the case that difficult environmental conditions exist outside of the sheets. When condensation and trapped moisture is found in the underside of the sheet, they apply coating to its face in order to suit the environmental conditions and cost.

Aluminum is resistant to corrosion. 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.

You cannot compare easily the 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. While aluminum is lighter, steel is stronger 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. Certain types of aluminum panels are formed more easily than steel because it has a low melting point.

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