There are many classifications of deformed aluminium sheets. At present, most countries in the world usually classify them according to the following three methods:
(1) According to the state diagram and heat treatment characteristics of the alloy, it can be divided into two categories: non-heat treatment strengthened aluminium plate and heat treatment strengthened aluminium plate. Non-heat treatment strengthened aluminium sheet: pure aluminium,
Al-Mn, Al-Mg, Al-Si alloys, etc. Heat treatment strengthened aluminium sheet includes aluminium magnesium silicon, aluminium copper, aluminium zinc magnesium alloy and so on.
(2) According to the properties and usage of the alloy, it can be divided into industrial pure aluminium, cutting aluminium plate, heat-resistant aluminium alloy plate, low-power aluminium plate, moderate aluminium plate, high-strength aluminium alloy plate (duraluminum), rust-proof aluminium plate in aluminium plate (duraluminum), forged aluminium plate and special aluminium plate.
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(3) According to the main elements contained in the alloy, it can be divided into: industrial pure aluminium (1xxx system), aluminium-copper alloy (2xxx system), aluminium-manganese alloy (3xxx system), aluminium-silicon alloy (4xxx system), aluminium-magnesium alloy (5xxx system), aluminium-magnesium-silicon alloy (6xxxx system), aluminium-zinc-magnesium-copper alloy (7xxx system) and LXXX system. Alloys other than 7xxx series (8xxx series) and reserve alloy group (9xxx series). Do you?
These three classification methods have their own characteristics, sometimes overlapping and sometimes complementing each other. In industrial production, most countries use the third method to classify, i. e. according to the four-digit method of major elements in alloys. This classification method can essentially reflect the basic properties of alloys and is easy to code, store and manage by computer. At present, four digits are also used for classification.
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