Cutting Tool Materials

Basic properties that cutting must posses are:

  • Tool material must be at least 30 to 50% harder than the work piece material.
  • Tool material must have high hot hardness temperature.
  • High toughness
  • High wear resistance
  • High thermal conductivity
  • Lower coefficient of friction
  • Easiness in fabrication and cheap

Different elements used in cutting tool materials and their properties are

Element
Properties
TungstenIncreases hot hardness
Hard carbides formed
Abrasion resistance
MolybdenumIncreases hot hardness
Hard carbides formed
Improving resistance
ChromiumDepth hardenability during heat treat hard carbides are formed
improving abrasion resistance
some corrosion resistance
Vanadiumcombines with carbon for wear resistance
retards grain growth for better toughness
CobaltIncreases hot hardness, toughness
CarbonHardening element forms carbides

Different cutting tool materials used for cutting operations in practice are high carbon steel, high speed steel, non -ferrous cast alloys, cemented carbides, ceramics and sintered oxides, ceremets, diamond, cubic boron nitride, UCON and sialon.

ME Mechanical Team
ME Mechanical Team
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All Comments

  • Well done ME Mechanical Team ! A good knowledgeable article on various cutting tools.

    sidemillingcutterarbor Jan 13, 2017 2:56 pm Reply

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