The temper of aluminum and aluminum alloys indicates:


Temper of Fxx:
Code F×× is: free machining state O×× is: annealing state H×× is: work hardening state W×× is: solution heat treatment state T×× is: heat treatment state (different from F, O, H state) *HXX’s subdivision state: The first digit after H indicates: the basic processing procedure to obtain this state, as shown below.

Temper of Hxx:
H1: Simple work hardening state H2: Work hardening and incomplete annealing state H3: Work hardening and stabilization treatment state H4: Work hardening and painting treatment state The second digit after H: Indicates the degree of work hardening of the product . Such as: 0 to 9 means that the degree of work hardening is getting harder and harder.

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