... More efficient grinding . 2.Grinding wide use for metal. 3.BEST quality Hard metal plates for processing blades, wear parts Grade Performance & application ... 92.0 Fine grade alloy, with good wear resistance, used for processing blades,wear resistance parts etc.YM814.7 2400 89 ... 5 High bending strength, wear resistance lower than MK6A, used for processing blades,wear resistance parts etc.YM1514.5 2500 87 ...