.001 thick is a pretty thin coat of anodize. I work at a machine shop and when we make parts for customers we have to take into affect how much anodizing they put on its usually .001 -.002 per side, but this could be industrial grade hard annodizing. I think hard anodizing is actually harder then the aluminum its used to coat which is nice since you get the lightness of aluminum, but a bit tougher shell. now if you really want a wear resistant surface you could titanium nitride coat it i think its like 50 rockwell hardness.