UNS #T11301

M1 tool steel is a general-purpose, molybdenum-bearing high-speed steel possessing toughness equivalent to any other material in its class. It is produced using the electroslag remelting (ESR) process which results in higher purity, fewer inclusions, more uniform grain structure and improved properties. M1 tool steel is used in fire-edged tools and tools which must be ground with sharp angles where danger of edge crumbling or chipping is pronounced.

Type Analysis

  • Carbon (Nominal) 0.81
  • Silicon (Maximum) 0.3
  • Tungsten (Nominal) 1.5
  • Manganese (Maximum) 0.3
  • Chromium (Nominal) 4
  • Molybdenum (Nominal) 8.5
  • Iron (Nominal) Balance
  • Vanadium (Nominal) 1.1


Blanking dies Chasers Drills Form cutters Hobs Lathe tools Milling cutters Planer tools Punches Reamers Slitting saws Taps Trimming dies

Applicable Specifications

  • ASTM A600
  • QQ-T-590




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