Posted by: tungsten
Posted by: T-mack
6000 series you heat treat then bend to get rid of warpage right after as the grains are all in the proper direction.
Uh, first the surface table then the oven. Preferably right after welding while material's still soft and malleable.
Ohh right right my bad. I was at work when I typed that out, brain was a little scattered. Point being is 6000 series you heat treat to get a T6 state whereas 7000 series you dont hence why cranks etc are made from 7000. I could be wrong though?