28-11-2017, 03:57 PM
(28-11-2017, 01:55 PM)Dennis Nicholas Wrote: ... I am sure I read somewhere that hard and soft metal rubbing together then perversely the HARD metal will wear away quicker?
This is correct; what happens is the soft material traps the abrasive material in its surface, and this then acts like sandpaper or a file to wear down the harder surface.