I guess I don't know what you're trying to say here.
The decking is made from stainless steel type 304. The steel itself will not rust for a very long time. Where other metal has rubbed it... chains during shipping for example, you will see light surface rust form. I don't know why. I'm not a metallurgist. I am just telling you, what our steel company tells us... that the surface rust will form after this "rubbing" happens. I hesitate to even call it rust. It obviously is, you can tell that b/c of color. But it's very minimal. It's more of a discoloration than anything. I still don't feel this is a gimmick. We switched to the stainless steel b/c it's more rigid. The rust resistant characteristics are just a BONUS!!!