CarTech Micro-Melt T15 Steel

CarTech Micro-Melt T15 Steel

Steel name: CarTech Micro-Melt T15
Diagram No.: 2320
Chemical composition in weight %: 1.60% C, 0.35% Si, 0.30% Mn, 4.25% Cr, 5.00% V, 12.25% W, 5.00% Co
Steel group: PM high speed steels
Properties: CarTech Micro-Melt T15 alloy is a high-carbon tungsten-cobalt-vanadium high speed powder metal tool steel possessing excellent abrasion resistance and red hardness. Many of the benefits realized in the use of CarTech Micro-Melt powder metals, such as CarTech Micro-Melt T15 alloy, are a direct result of the refined microstructure (smaller, more uniformly distributed carbide particles and a finer grain size) and the lack of segregation in the powder metallurgy product. These advantages include ease of grinding, improved response to heat treatment, greater wear resistance, and increased toughness of the finished tool.
Applications: Form tools, lathe tools, planer tools, broaches, milling cutters, cold work tools, hobs, blanking dies, punches, drills, screw machine tools.
Reference: Not shown in this demo version.

Heat Treatment
Hardening: Micro-Melt T15 alloy should be heat treated using proper precautions to prevent decarburization. First, preheat to 1500/1600°F (816/871°C), equalize, and transfer to a furnace maintained at the desired hardening temperature. Alternatively, the tool may be preheated in the vacuum furnace that will be used for the austenitizing cycle. Austenitize at 2000/2250°F (1093/1232°C) for 5 to 45 minutes, depending on the austenitizing time to be Used. General suggestions for the austenitizing time to be used, depending upon the austenitizing temperature chosen, are given in the heat treatment table found at the end of this section. Quench in oil and be sure that tools are cooled below 200°F (93°C) before tempering (cool enough to hold in your hand). If a vacuum furnace is used, it should have a 4 bar minimum quench capability. Small sizes under about 1” (25.4mm) in diameter, or delicate sections, may be hardened by cooling in still air. It is also acceptable to quench in molten salt at temperatures of 1000/1100°F (538/593°C), equalizing for 5 minutes per inch, followed by air cooling.
Tempering: Tools should be tempered immediately after the completion of the quench. The tempering temperature may be varied according to the desired hardness but it is usually in the range of 950/1150°F (510/621°C).
Diagram note: No data

Tempering Diagram

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Other Steel Data links
Carbides in Steel
CCT and TTT Diagrams of Steels
CCT and TTT Diagram Calculating Service
Hardenability Diagrams of Steels
Hardenability Calculating Service
Macro Defects in Steel
Metal Etchants
Non-Metallic Inclusions in Steel
Semiconductor Etchants

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.