Industrial pure aluminum aluminum content between 98.8-99.7%, but the pure aluminum material is too soft not have too much practical value, alloy aluminum products is based on pure aluminum group in general, the main alloying elements are copper, silicon, magnesium, zinc, manganese, minor alloying elements are nickel, iron, titanium, chromium, lithium and so on. Because of its high strength, light weight, easy processing, good appearance and corrosion-resistant properties, is used in many industries.
Aluminum alloy grades used by four digit naming alloy group ，in order to the distinction between aluminum alloy content:
| Aluminum Alloy Grade | main alloying elements |
| 1XXX | Pure Aluminum (Al content of not less than 99.00%) |
| 2XXX | Cu (Copper) |
| 3XXX | Mn (manganese) |
| 4XXX | Si (silicon) |
| 5XXX | Mg (magnesium) |
| 6XXX | Mg + Si (Mg + Si) |
| 7XXX | Zn (zinc) |
| 8XXX | Other elements |
Different aluminum series grades have differences performance and applications , the DETECT-METALS currently produces precision aluminum pipe primarily is 3XXX and 5XXX series, especially in 3003,3103,5049 and 5052, mostly because of its good corrosion resistance and formability, These aluminum pipes is widely used in heat exchangers. Aluminum places 6XXX series based mainly 6061,6082,6063,6005,6110, because of its high strength, easy machining, weldability and corrosion resistance, 6061 aluminum pipe extrusions used in many structural components .
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