M7

UNS #T11307

M7 is an electroslag remelted (ESR) molybdenum-bearing high-speed tool steel with a content of tungsten, chromium and molybdenum similar to that of M1 (AISI Type M1).The increased carbon and vanadium content of this tool steel results in improved cutting efficiency without materially reducing toughness.

Type Analysis

  • Carbon (Nominal) 1
  • Silicon (Maximum) 0.25
  • Tungsten (Nominal) 1.75
  • Manganese (Maximum) 0.25
  • Chromium (Nominal) 4
  • Molybdenum (Nominal) 8.75
  • Iron (Nominal) Balance
  • Vanadium (Nominal) 2

Applications

Blanking dies Chasers Drills End mills Form cutters Hobs Lathe tools Milling cutters Planer tools Punches Reamers Shearing blades Slitting saws Taps Thread rolling diesTrimming dies

Applicable Specifications

  • ASTM A600
  • QQ-T-590

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Rounds

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