Metal roofing materials are scarce, including galvanized steel plate, stainless steel plate, aluminum alloy plate, copper plate, zinc copper titanium composite plate, and pure titanium plate. The advantages of metal sheet roofing are rough construction, fast speed, good waterproof performance, and reusability. In addition to being able to withstand the lowest and lowest temperatures that can be generated by the Earth's scenery, it is rarely affected by the stress generated by the scenery and roof deformation when used as a roofing material. People can also apply various colors of paint according to the situation.
The aluminum magnesium manganese alloy roof/curtain wall system utilizes the 3000 series of aluminum manganese (aluminum manganese magnesium) alloys, which are very suitable for processing roof rolling and pressing equipment for purposes such as elongation, hardness, tensile strength, yield strength, etc. Therefore, it is widely used in exterior covering projects such as roof/wall systems, and combined with various painting systems and painting processes to make the exterior of the building more colorful, while also increasing the anti falling property of aluminum alloy itself.
The minimum thickness of the aluminum material used for the roof is 0.7mm. When the thickness of the aluminum material is 1mm, its weight is 2.7 kg/square meter. When the thickness is 0.7mm, the quality of the aluminum material is 1.89 kg/square meter. The length of the coil is not limited.
Its tension characteristics include a density of 2.7, a melting point of 658, a linear compression coefficient of 0.0000023 at a temperature of 20-100 degrees, a fracture load coefficient of 8-12 kilograms/square millimeter (depending on the material hardness), an elongation of 10-40%, and a thickness of 0.7-1.2mm. When it is an aluminum corrugated plate, the thickness can be reduced to 0.6mm. In addition to curling and riveting, it can also be strengthened by welding.
1、 Durability comparison: Aluminum magnesium manganese alloy can form an aluminum oxide film with the atmosphere to prevent further degradation. It is also used in civilian construction and has a 15 to 20 year coating warranty. The construction plan has a service life of over 50 years. A 25 year product warranty period with the same ordinary guarantee; Colored steel plates can easily fall and rust under the influence of humid atmosphere, rain, and snow, resulting in fracture events, especially in the areas of rivets and joints.
2、 Weight comparison: Aluminum magnesium manganese alloy has a light weight (density of 2730 kg/square meter); Colored steel plate has a comparable weight (density of 7850 kg/square meter)
3、 Strength and stiffness comparison: Aluminum magnesium manganese alloy has magnesium and manganese content in its aluminum alloy, so it has a certain degree of strength and stiffness. However, the internal stress, hardening, strength, etc. of aluminum alloy sheets do not have obvious yield points, and are not as good as color steel; The color steel plate has good strength and stiffness, and does not deform casually.
4、 External comparison: Aluminum magnesium manganese alloys can be divided into non painted (hammer pattern, embossing, pre passivated aluminum oxide external treatment, etc.) and painted (PVDF, SMP, PE, etc.); Color steel plates can be divided into non painted (hot-dip aluminum zinc alloy steel strip: smooth plate) and painted (PVDF, SMP, PE, HDP, etc.) categories.
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