... grade alloy, with good wear resistance, used for processing blades,wear resistance parts etc.YG6AYM814.7 2400 ... strength, wear resistance lower than MK6A, used for processing blades,wear resistance parts etc.YG8YM1514.5 2500 ... 87.5 Used for punch dies,stamping dies and wear resistance ... 5 2800 85.5 High bending strength,used for step dies and other stampings dies.YG20YM2T14. ...