Non-heat treatable alloys are produced by mixing Aluminum alloys with other elements. The 1xxx, 3xxx, 4xxx, and 5xxx are the elements and alloys under discussion. After alloying, strain hardening is applied. It is important to note that strengthening alternatives are used on these series because these ones do not respond well to heat treatment.

As an alternative, cold working processes ae applied to improve the mechanical properties of these alloys. Although, these alloys including 1000, 3000, and 5000 are popular for their corrosion resistance and formability.