You are here: Home>Knowledge>High Speed Steel Materials High Speed Steel materials High Speed Steel materials HSS materials Abbreviation Chemical composition M42 (HSSCO8%) W2MO9CR4VCO8 M35 (HSSCO5%) W6MOCR4V2CO5 M3 (6543) W6MO5CR4V3 M2 (6542) W6MO5CR4V2 9341 W9MO3CR4V 4341 W4MO3CR4VSI 4241 W4MO2CR4VSI Previous: Abrasives cutting grinding whe Next: PANTONE COLOR SYSTEM