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Series | Main Alloy | Effect on Alloying Elements |
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1000 | Non (99% Alum.) | Unalloyed aluminum is highly corrosion resistant, low strength, workable, conductive, Non-heat-treatable. |
2000 | Copper Based | Gives strength, hardness, machinability, Heat-treatable |
3000 | Manganese Based | Adds moderate strength, good workability. Non-heat-treatable |
5000 | Magnesium Based | Moderate to high strength. Corrosion resistant. Non-heat-treatable |
6000 | Magnesium & Silicon Based | Increase strength, formability, corrosion resistant. Heat-treatable. |
7000 | Zinc Based | For greatest strength. Heat-treatable. |
Note : 1000, 3000, 5000 and 6000 alloys have good welding characteristics and corrosion resistant. 2000 and 7000 alloys have higher strength and better machine ability, but lower weld ability and corrosion resistant. |