Grade | Density | T.R.S | Hardness | Performance & application recommended | Approx grade
in China |
g/cm3 | MPa | HRA |
YM4A | 14.9 | 1850 | 92 | Fine grade alloy, with good wear resistance, used for processing blades,wear resistance parts etc. | YG4A |
YM8 | 14.7 | 2400 | 89.5 | High bending strength, wear resistance lower than MK6A, used for processing blades,wear resistance parts etc. | YG8 |
YM15 | 14.5 | 2500 | 87.5 | Used for punch dies,stamping dies and wear resistance parts. | YG15 |
YM20 | 13.5 | 2800 | 85.5 | High bending strength,used for step dies and other stampings dies. | YG20 |