High speed steels with phosphorus for improved cutting performance

摘要

A new high speed steel with improved cutting life is provided consisting essentially of about 0.7 to 1.6% carbon, about 0.2 to 1.0% silicon, about 0.2 to 0.8% manganese, up to about 0.2% sulphur, about 0.5 to about 20% tungsten, about 0.5 to about 10% molybdenum, about 0.5 to 5% chromium, about 0.5 to about 6% vanadium, up to about 10% cobalt, more than 0.03% to about 0.20% phosphorus, the balance iron with residual impurities in ordinary amounts.