What Are Features of Aluminum Sheet for Roof

Metal sheets have been used as roofing materials for hundreds of years. Metal roofing materials mainly include galvanized steel sheets, stainless steel sheets, aluminum alloy sheets, copper sheets, zinc-copper-titanium alloy sheets and pure titanium sheets. The advantages of metal sheet roofing are simple construction, fast speed, good waterproof performance and reusability.

In addition to being able to withstand the highest and lowest temperatures that the earth's climate can produce, when used as a roofing material, it is rarely affected by the stress caused by the climate and roof deformation, and people can also apply various colors of paint according to the situation.

The aluminium sheet for roof mainly uses the 3000 series aluminum-manganese alloy. The elongation, hardness, tensile strength, yield strength and other indicators of the 3000 series aluminum-manganese alloy are very suitable for the processing of roof hemming and rolling equipment. Therefore, it is widely used in building exterior maintenance projects such as roof/wall systems.

The minimum thickness of the aluminum sheet for the roof is 0.7mm. When the thickness of the aluminum material is 1mm, its weight is 2.7kg/m2. When the thickness is 0.7mm, the weight of the aluminum material is 1.89kg/m2. The length of the coil is unlimited.

Aluminum roofing sheet VS Steel roofing sheet

1. Durability comparison: Aluminum-magnesium-manganese alloy can form an aluminum oxide film with the atmosphere to prevent further corrosion. It is generally used in civil buildings with a coating warranty of 15-20 years. The design service life of the building is more than 50 years. Generally, a 25-year product warranty period is guaranteed; color steel plates are prone to corrosion and rust under the erosion of humid air, rain, and snow, causing fracture accidents, especially rivets and joints.

2. Weight comparison: Aluminum-magnesium-manganese alloy is light (density is 2730 kg/m2); color steel plate is heavier (density is 7850 kg/m2).

3. Comparison of strength and rigidity: Aluminum-magnesium-manganese alloy contains magnesium and manganese, so it has certain strength and rigidity. However, the internal stress, hardening, and strength of aluminum alloy plates do not have obvious yield points, which are not as good as color-coated steel plates; color-coated steel plates have better strength and rigidity and are not easy to deform.

4. Lightning protection performance: The thickness of aluminum-magnesium-manganese alloy is generally 0.7mm and 0.9mm, which can be directly used as lightning arrester, avoiding perforation on the roof; color steel plate generally uses 0.5mm thick aluminum-zinc and galvanized steel plate, which cannot be directly used as lightning arrester, and lightning arrester (such as lightning rod) needs to be set up separately.

5. Forming: Aluminum-magnesium-manganese alloy has good weldability and high plasticity. In low temperature environment, the strength and ductility of aluminum alloy are improved, and it has good low temperature working performance; color steel plate steel is prone to cold brittleness at low temperature.

6. Cost-effectiveness: Aluminum-magnesium-manganese alloy has a high cost-effectiveness: light weight, waterproof, easy to bend, and good three-dimensional visual effect; color steel plate has a low cost-effectiveness: heavy weight, slightly poor waterproof, strong rigidity, slightly poor bending, and poor artistic effect. Welcome to inquire price of aluminium sheet for roofing.