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CLASSIFICATION OF TOOL STEELS
THE WEARTOUGHNESS RATIO IN USE
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1200 Drawing temperature Achorn air-hardening steels Allegheny Ludlum alloy alloy content alloy steels annealed Atlas austenite Bethlehem Braeburn brine carbides carbon content carbon dioxide carbon steel carbon tool steel carburizing cementite chromium-molybdenum cobalt cold cool in air cool slowly cracking Crucible curve for Type cutting tools decarburization desired dew point Electrite endothermic Fagersta Firth-Sterling furnace atmosphere grain growth graphitic Group hardening temperature Heat slowly Heat-treatment Forging high-carbon high-chromium steels high-speed steel higher hot-work steels Houghton & Richards increase Jessop Latrobe machining manganese martensite maximum metal milling cutter molybdenum oil-hardening oil-quenched operation oxidizing pearlite piece preheat pyrometer quenching red-hardness Republic Rockwell salt bath sections silicon slowly and uniformly soaking Steel Type steels containing surface temperature F Fig Tempering curve thermocouple tion tool steels toughness tungsten ture Type 7C Type 8A type of steel Universal Cyclops vacuum vanadium Vanadium Alloys wear resistance