... : 20-400mm It is widely used for vaired cutters and cold work mole with wearproof. M2 high speed steel round bar (1.3343 ... , P≤0.030, S≤0.030, Cr:4.10, W:6.00, Mo:4.80, V:1.852.Annealed Hardness:255 ... test is workable for you.It is widely used for vaired cutters and cold work mole with wearproof. M2 high speed steel round bar ... , P≤0.030, S≤0.030, Cr:4.10, W:6.00, Mo:4.80, V:1.852.Annealed Hardness:255 ...