Aluminum Co., Ltd. Guangdong Marriott: aluminum alloy grades used are 1050,1060,1070,1100,3003,3004,5005,5052,8011 like. Common states are O and H states and other states. O represents soft state, H represents a hard state. O and H can be followed by a number in soft and hard, and annealing degree. Aluminum band categories are: aluminum with transformer aluminum, hard aluminum, all soft aluminum, semi-rigid aluminum, rust-proof aluminum alloy has good forming properties, corrosion resistance, can be candles, fatigue strength and static strength medium, for the manufacture of aircraft fuel tanks, pipelines, and transportation vehicles, ship sheet metal parts, instruments, lights bracket and rivets, metal products, such a characteristic aluminum aluminum is the most widely distributed in nature metal element content of aluminum in the crust of 8% (by weight), after oxygen and silicon. Aluminum has a series of excellent features: - low density, aluminum has a density of 2700kg / m3, about 1/3 of iron (iron density of 7800kg / m3). - Weight and strength is not high, the strength of aluminum is not high, but can make it through the cold doubled, and by the addition of alloying elements and then heat-treated to further strengthen, its strength can be comparable with high-quality steel. - Ease of processing, aluminum may be cast by any casting method. Aluminum is good, you can roll into a sheet and foils; pull into tubes and filaments; extruded into various profiles; you can use a variety of tools for processing. - Corrosion-resistant, aluminum and its alloys surface is easy to generate a dense, solid oxide protective film. This layer of the protective film of the aluminum has good corrosion resistance to atmospheric corrosion and water, and only under intense action of halogen ions and alkali ions will be destroyed. The use of protective measures that can improve the corrosion resistance of aluminum alloy. - Electrical conductivity, thermal conductivity, and thermal conductivity of aluminum second only to silver, copper and gold.