What is the definition of aluminum?
Silver-white light metal, malleable, products are often made of different style of aluminum , rod shape, round shape, flake shape, foil shape, powder shape, ribbon shape and wire shape. It can form an oxide film to prevent metal corrosion in humid air. Aluminum powder can burn violently when heated in the air and emit a dazzling white flame. It is easily soluble in dilute sulfuric acid, nitric acid, hydrochloric acid, sodium hydroxide and potassium hydroxide solution, but hardly soluble in water. The relative density is 2.70. Melting point is 660°C. The boiling point is 2327°C. The content of aluminum in the crust is second only to oxygen and silicon, ranking third, and is the most abundant metal element in the crust. The development of the three important industries of aviation, construction, and automobiles requires the characteristics of materials to have the unique properties of aluminum and its alloys, which greatly facilitates the production and application of this new metal aluminum. The application is extremely wide.
Characteristics of different series of aluminum materials:
1100 is used for processing parts that require good formability and high corrosion resistance but do not require high strength, such as chemical products, food industry equipment and storage containers, thin plate processing parts, deep drawing or spinning concave vessels, Welding parts, heat exchangers, printed boards, nameplate in metals, reflectors
5052 is the most representative alloy with medium strength. It has good corrosion resistance, weldability and formability, especially high fatigue strength and good seawater resistance. Used to manufacture aircraft fuel tanks, fuel pipes, as well as sheet metal parts of transportation vehicles and ships, instruments, street lamp brackets and rivets, hardware products(metal logo), etc.
5083 Alloy for welding structure. It is the highest strength corrosion-resistant alloy among practical non-heat-treated alloys, suitable for welding structure. Seawater resistance and good low-temperature characteristics Ships, vehicles, low-temperature vessels, pressure vessels
6061 Heat-treated corrosion-resistant alloy. T6 treatment can have a very high endurance value, but the strength of the welding interface is low, so it is suitable for screws, anchors, ships, vehicles, and land structures
6063 is a representative extrusion alloy with lower strength than 6061, good extrudability, and can be used as shapes with complex cross-sections, with good corrosion resistance and surface treatment. Construction, highway guardrails, high fences, vehicles, furniture, Home appliances, decorations
7072 Low electrode potential, mainly used for anti-corrosion covering skins, and also suitable for heat sinks of heat exchangers. Aluminum alloy composite board leather, heat sink, air conditioner aluminum foil and ultra-thin strip
7075 aluminum alloy is one of the highest strength alloys, but its corrosion resistance is not good. The covering skin with 7072 can improve its corrosion resistance, but the cost is higher. Suitable for aircraft, ski poles, thick plates and forged products
Various states of aluminum and aluminum alloys
Codename
F×× is: free processing state
O×× is: annealed state
H×× is: work hardened state
W×× is: solid solution heat treatment state
T×× is: heat treatment state (different from F, O, H state)
*H××hardened subdivision state:
The first digit after H indicates: the basic processing procedure to obtain this state, as shown below.
H1: Simple work hardening state
H2: Work hardened and incompletely annealed state
H3: State of work hardening and stabilization
H4: State of work hardening and painting treatment
The second digit after H: indicates the degree of work hardening of the product. For example: 0-9 means the degree of work hardening is getting harder and harder.
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