On 02/10/2011 06:01 PM, Karl Townsend wrote:
I'm preparing to machine several AL 7075 T6 forgings...

"The Kid" (my son) tells me I should anneal before machining because
there will be hard brittle spots. Easy enough to do at the anneal temp
of 775 (not sure how long). But, then I haven't got T6 grade 7075 AL
anymore. How would I get it back to T6 grade?

Or, am I better off with plan "A"? Don't anneal.

Karl


Umm, how hard can 7075 get? Shouldn't be any problem, and really, the
harder it is the better it machines, usually.

Jon