CarTech Micro-Melt HS30 Steel

CarTech Micro-Melt HS30 Steel

Steel name: CarTech Micro-Melt HS30
Diagram No.: 2311
Chemical composition in weight %: 1.27% C, 0.55% Si, 0.30% Mn, max. 0.030% S, 4.20% Cr, 5.00% Mo, 3.10% V, 6.25% W
Steel group: PM high speed steels
Properties: CarTech Micro-Melt HS30 alloy is an 8% cobalt, high hardenability tungsten-molybdenum alloyed high speed steel exhibiting excellent hot hardness combined with good wear resistance and toughness. It is recommended for cutting tools for difficult-to-machine materials and high cutting speeds. The advantages of Carpenter CarTech Micro-Melt premium powder high speed steels include ease of grinding, response to heat treatment, more uniform structure, greater wear resistance and improved toughness.
Applications: Milling cutters, end mills, cutting tool inserts, gear cutting tools, lathe tools, punches and dies, form tools, broaches, reamers, cut-off tools, drills, taps.
Reference: Not shown in this demo version.

Heat Treatment
Hardening: It is customary to use two furnaces to harden Micro-Melt HS30 alloy. One furnace is used to preheat the workpiece to 1500/1550°F (816/843°C), and the second is used to rapidly heat the workpiece from the preheating temperature to the hardening temperature of 2125/2200°F (1163/1204°C) for atmosphere furnaces or 2100/2175°F (1149/1191°C) for salt baths. Metal cutting tools are usually hardened from the high side of the hardening temperature range, i.e. 2155/2175°F (1179/1191°C) in salt, while cold work tools (punches and dies) are hardened from the low side of the hardening range. Typical soak times at the hardening temperature are 3-5 minutes.
Tempering: Tempering should be performed immediately after quenching and cooling of the workpiece below 150°F (66°C) or as soon as it can be touched comfortably with a bare hand. The tempering temperature may be varied depending on the application and desired hardness. Triple tempering is required. Typical tempering is performed at 1025°F (552°C) for two hours at temperature followed by air cooling to room temperature. This cycle is repeated twice to obtain triple tempering.
Diagram note: No data

Effect Tempering Temperature on Hardness

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Disclaimer: The material data is a central depository of information based on global actual tests and calculated software data that is available to the public for a fee. The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other puposes. There is no representation that the recipient of this literature will receive updated editions as the become available.