High Speed Steel Properties
High Speed Steel Properties
High Speed Steel Properties
at slightly higher hardness than the non- pering resistance over M3 or M4, but broaching, where abrasion is a more
cobalt-bearing grades. The higher ini- not higher vanadium content, cobalt- common failure mode, they may offer
tial heat-treated hardness contributes to bearing high speed steels are best suited somewhat improved performance over
higher retained hardness at elevated for applications involving higher cut- M3 or M4, but may not be as effective
temperature as well. ting speeds in similar materials. In as higher vanadium grades.
Because they feature improved tem- slower cutting operations, such as T15 (HS 12-1-5-5), with 5% vanadi-
um and 5% cobalt, is sometimes used
where moderate temper resistance but
high abrasion resistance is needed, such
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