Ya had better luck than me :-)
Wonder if it whatever iron/steel they melt down.. or different plants ??
I have read on more than a few sites, some of the mills use recycled iron/aluminum ..
The wagner/chinese rotors pads on the front of my 2009 F150 wore quickly
The inside pad, drivers left, wore down to the metal less than 15,000 miles
All of the rotors were worn way down, I found some old stock rotors/pads from rockauto
They are wearing like the original parts
Ricky.