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Bohler-Uddeholm UDDEHOLM DIEVAR® Hot Work Tool Steel
Categories: Metal; Ferrous Metal; Alloy Steel; Chrome-moly Steel; Tool Steel; Hot Work Steel

Material Notes: Description: Uddeholm Dievar is a high performance chromium-molybdenum-vanadium alloyed hot work tool steel which offers a very good resistance to heat checking, gross cracking, hot wear and plastic deformation.

Dievar is characterized by:

  • Excellent toughness and ductility in all directions
  • Good temper resistance
  • Good high temperature strength
  • Excellent hardenability
  • Good dimensional stability throughout heat treatment and coating operations
Applications: Heat checking is one of the most common failure mechanism e.g. in die casting and now days also in forging applications. Uddeholm Dievar’s superior ductility yields the highest possible level of heat checking resistance. With Uddeholm Dievar’s outstanding toughness and hardenability the resistance to heat checking can further be improved. If gross cracking is not a factor then a higher working hardness can be utilized (+2 HRC). Regardless of the dominant failure mechanism; e.g. heat checking, gross cracking, hot wear or plastic deformation. Uddeholm Dievar offers the potential for significant improvements in die life and then resulting in better tooling economy. Uddeholm Dievar is the material of choice for the high demand die casting-, forging- and extrusion industries.

Vendors:
Available Properties
  • Density, hardness of 45 HRC
  • Density, hardness of 45 HRC
  • Density, hardness of 45 HRC
  • Hardness, Brinell, Soft annealed
  • Tensile Strength, Ultimate, hardness of 44 HRC
  • Tensile Strength, Ultimate, hardness of 48 HRC
  • Tensile Strength, Ultimate, hardness of 52 HRC
  • Tensile Strength, Yield, hardness of 44 HRC
  • Tensile Strength, Yield, hardness of 48 HRC
  • Tensile Strength, Yield, hardness of 52 HRC
  • Elongation at Break, hardness of 52 HRC
  • Elongation at Break, hardness of 44 HRC
  • Elongation at Break, hardness of 48 HRC
  • Reduction of Area, hardness of 52 HRC
  • Reduction of Area, hardness of 44 HRC
  • Reduction of Area, hardness of 48 HRC
  • Modulus of Elasticity, (hardness of 45 HRC)
  • Modulus of Elasticity, hardness of 45 HRC
  • Modulus of Elasticity, hardness of 45 HRC
  • CTE, linear, hardness of 45 HRC
  • CTE, linear, hardened to 45 HRC
  • Thermal Conductivity, hardness of 45 HRC
  • Thermal Conductivity, hardness of 45 HRC
  • Processing Temperature, hardening temperature, then quenched in oil and tempered twice at 1160°F for 2 hrs (hardness = 45 HRC)
  • Carbon, C
  • Chromium, Cr
  • Iron, Fe, As Balance
  • Manganese, Mn
  • Molybdenum, Mo
  • Silicon, Si
  • Vanadium, V
  
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