whats the difference between 7000and 7005 aluminum

Easton Sports or Alcoa (I don't remember which) owns a patent that covers 7005 Aluminum in the USA. This is why some companies say their bikes are made from 7000 Aluminum when they are actually part of the same family (7000 series, which includes all variants).

Click Here for information on the different types of frame materials and comparisons between them.

8) 7000 = 7005 8)