Fortal is produced by Pechiney Rhenalu,which is owned by Alcan.
<font face="Verdana, Arial" size="2">Originally posted by Thorsten:
First off, Fortal is from France, where it is made specifically for the aerospace industry. It is superior to American made 7075 because it holds its properties throughout the entire thickness of the stock, something neither Kaiser nor Alcoa appear to be able, or willing, to do.
While similar to 7075 (as Fortal themselves state), Fortal is nonetheless unequivocally superior to 7075.
All that being said, it's a huge pity that Jim didn't/couldn't/wouldn't continue, and I'd love to know what actually happened, i.e. whether his supply dried up, or whether he couldn't make a go of it or what. Whatever the reason, this is a huge loss, as, at $2.70 a pound and the incredible service Jim provided in trying to provide stock that minimized waste for the buyer, nothing can match his offerings.
Fortal's properties are very similar to 7075 in all aspects except for purity with the Fortal having slightly better controls.
The only real difference is Fortal retains it's properties throughout the crossection in thicknesses over 4".
For our uses 7075 t6 is everything we need.From having machined both,there is no difference between the two.
7xxx alloys can be welded,but not by traditional methods.The two methods that I know of are EB(electron beam welding) and friction or stir welding.
One particular use I love for 7075 is that it can be hot forged.
I have about 30' of 4-1/2" 7075-t2 round bar,along with the heat treat specs straight from Alcoa.I tried a few pieces in our oven at work and it is dead simple to treat.
I just need one more tool,just one!