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What Is M3:2 Tool Steel?

The AISI M3:2 tool steel has a high carbon content, along with tungsten, molybdenum, and vanadium, which gives it excellent wear resistance, high red hardness, and good toughness. This combination of properties makes it ideal for use in high-speed machining applications where tools must be able to withstand extreme temperatures and high stresses.

AISI M3:2 tool steel is typically used in manufacturing processes that involve cutting, drilling, or shaping hard materials such as metals, alloys, and composites. It is also commonly used in the production of precision tools and parts that require high dimensional accuracy and surface finish.

Overall, AISI M3:2 is a high-performance tool steel that provides excellent cutting performance and long tool life, making it a popular choice in a variety of manufacturing applications.

AISI M3:2 DIN 1.3344 / UNS T11302
FusionTG Color Code White
Offered As Availability
Sheet Yes - Upon Special Request
Plate Yes - Upon Special Request
Cut Bar No
Blocks No
Rounds Yes - Upon Special Request
Forging No
Drill Rod No
Flat Ground Stock No
Typical Chemical Composition Minimum - Maximum Value
Carbon (C) 1.20-1.45%
Chromium (Cr) 3.75-4.50%
Tungsten (W) 4.50-5.50%
Molybdenum (Mo) 1.75-2.25%
Vanadium (V) 1.75-2.25%
Cobalt (Co) 8.00-10.00%
Iron (Fe) balance
Silicon (Si) 0.20-0.45%
Manganese (Mn) 0.20-0.45%
Phosphorus (P) 0.03% maximum
Sulfur (S) 0.03% maximum
Maximum Rockwell C Hardness Obtainable 68 HRC
Supplied In Annealed Condition 229 BHN

AISI M3:2 is a high-speed tool steel that is commonly used in a variety of cutting tool applications. Its combination of wear resistance, toughness, and red hardness makes it suitable for a range of applications where high-speed cutting and machining are required. Some typical applications of AISI M3:2 include:

  • Cutting tools: M3:2 is commonly used in the manufacture of cutting tools such as drills, reamers, taps, milling cutters, and saw blades.
  • Metal forming tools: The high red hardness and toughness of M3:2 make it suitable for use in metal forming tools such as dies, punches, and press tools.
  • Aerospace industry: M3:2 is used in the aerospace industry for the production of turbine blades, engine components, and other high-performance parts.
  • Automotive industry: M3:2 is used in the manufacture of cutting tools for the production of engine and transmission components.
  • Medical industry: The high dimensional accuracy and surface finish of M3:2 make it suitable for use in the production of medical implants and instruments.

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