I know this thread kind of died off with no resolution, but it was interesting to me. 7071 may not exist, but there are a wide variety of wonderful 7075 options for various applications. I have a small stockpile (hoard) of this stuff ... http://www.supdie.com/wp-content/uploads/2015/10/fm-v3.pdf
I use it for anything I can, has a nice stainless like finish.
I use it for anything I can, has a nice stainless like finish.