Vertical dendrites (columns of CrC Crystals)
viewed from the side.
Same dendrites viewed from the top.
Imagine the "toothbrush" effect
HARDNESS IS NOT EVERYTHING!
Two samples from the Sand-Rubber Wheel Abrasion test clearly shows the extra wear on sample (A) at 58 - 62 Rc Hardness.
The sample (B) at 50-54 Rc shows less wear and abrasion, despite being softer.
The answer: Sample (B) is Rio-Carb CrC plate with MaxCS™.
The higher carbide saturation of MaxCS™ extends the wear life.
MaxCS™ is a Registered Trademark