Alloy Designation, Processing, and Use of AA6XXX Series Aluminium Alloys
Table 5
Basic temper designation of Al alloys [2, 11, 12].
Temper
Treatment
Use
F
Fabricated
The products fabricated by casting, hot working, cold working processes without control over elevated temperature treatment or work hardening is used.
O
Annealed
The castings which are annealed to enhance ductility and dimensional stability. The wrought semis which are annealed to obtain lowest strength temper.
H
Strain hardened
The wrought products only which are work hardened with or without supplementary elevated temperature treatments to get desired ductility at lower strength. The H is always followed by two or greater than two digits.
W
Solution treated
The alloys which age at room temperature after solution heat-treatment to produce unstable temper. This designation is proper only when the time of the aging is indicated.
T
Stable tempers
The products which show stable tempers after heat treatment with or without supplementary work-hardening. The T is always followed by one or several digits.
