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Chemical Composition Of Our Main Grades And Designations

- Mar 29, 2018 -

Chemical Composition Of Our Main Grades And Designations:


The aluminum industry has created a system using a four-digit numerical designation to identify wrought aluminum alloys.  The first digit indicates the major alloying element.  The second digit indicates whether there was a modification in the basic alloy.  The third and fourth digit indicates the specific alloy.  The following represent the various groups:

1XXXAluminum 99% or greater
2XXXCopper - major alloying element
3XXXManganese - major alloying element
5XXXMagnesium - major alloying element
6XXXMagnesium and silicon - major alloying elements
7XXX


Zinc -major alloying element