
280 Engineering Materials Technology
TS Thermally treated to improve dimensional stability
(cast metals)
American Standards Condition
T Heat treated, numbers are then appended to indicate
the form of treatment
T2 Annealed casting
T3 Solution treated, cold worked and naturally aged
T4 Solution treated and naturally aged
T5 Artificially aged
T6 Solution treated and artificially aged
T8 Solution treated, work hardened and artificially aged
T9 Solution treated, artificially aged and work hardened
Surface treatments of aluminium
Aluminium develops an oxide surface layer in air. This layer can be thickened
by an electrolytic process, the treatmen ...