HIGH-SPEED STEEL Russian patent published in 1994 - IPC

FIELD: metallurgy. SUBSTANCE: steel has, wt. -% : carbon 0.73-0.83; tungsten 15.4-17.0; molybdenum 1.0-1.8; chrome 3.2-4.0; vanadium 0.5-0.8; silicon 0.6-1.1; manganese 0.3-0.5; zirconium 0.5-0.7; calcium 0.1- 0.2; cerium 0.25-0.35; nitrogen 0.07-0.09; rhenium 0.8-1.2, and iron - the rest. Steel is used for cutters making. EFFECT: enhanced quality of articles made of steel proposed, prolonged period of articles exploitation. 1 tbl