HIGH SPEED STEEL Performance FOR HSS cobalt 5%-M35
HSS CODE: W6Mo5Cr4V2Co5 (M35)
C Si Mn W Mo Cr V Co
0.88-0.96 0.20-0.60 0.2-0.40 6.0-6.70 4.70-5.20 3.80-4.50 1.70-2.00 4.5-5.0
Density Annealed(g/cm): 8.11
Heat treatment:Starting: 1100
Usage:Its suitable for cutters of high speed cutting lathes and cutters in high temperature resisting with shaking force.
Anneal temperature （℃) 840-860
Stress relief Temperature（℃）:600-650
Quench temperature （℃）:1200-1235
Coolant media of quench : salt bath at 600℃,or Oil cool or air cool
Normal temperature of temper（℃）: 540-560
Quench and temper HRC: 64-67
Bending Strength(Mpa): 3000-Impact
HRC at 600℃(HRC): 54
Character: It's general used HSS Co of W-Mo series.Red Hardness,High Temperature Hardness and Grandability are higher than W6Mo5Cr4V2(M2).The Better performance of Cutting and Grinding,but strengthen and impact toughness lower.It is easy being oxidized and decarburization in Heat treatment and Heat working.