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Assab Steel QRO 90 SUPREME Hot Work Steel

 

Subcategory: Tool Steel; Chrome-moly Steel; Hot Work Steel; Metal

Material Notes:
QRO 90 SUPREME is a high-performance, chromium-molybdenum-vanadium alloyed hot-work tool steel which is characterized by:

  • Excellent high temperature strength and hot hardness
  • Very good temper resistance
  • Unique resistance to thermal fatigue
  • Excellent thermal conductivity
  • Good toughnes and ductility in longitudinal and transverse directions
  • Uniform machinability
  • Good heat treatment properties

The name "SUPREME" implies that by special manufacturing techniques, including electro-slag remelting the steel attains high purity and good mechanical properties. This toegether with the optimum balance of alloying elements in QRO 90 SUPREME gives a properties profile which is unique among hot work die steels. The combination of high temperature strength, temper resistance and thermal conductivity exhibited by QRO 90 SUPREME is unparalleled.
Thus QRO 90 SUPREME has given improved service life in die casting and extrusion of non-ferrous metals and forging and extrusion of steel.

Applications: Die casting dies and associated tooling: cores, core pins, inserts, small to medium sized dies, shot sleeves, moving parts for aluminum, brass, and copper die casting.
Extrusion dies and extrusion tooling:

  • Dies for simple profiles to be produced in long series requiring more than one die
  • Dies for complicated or thin walled profiles
  • Hollow dies
  • Dies for difficult-to-extrude alloys.

For extrusion components: liners, dummy blocks, mandrels and stems.
Forging dies: small and medium sized dies for pressforging of steel, and brass. This product is also eminently suitable for progressive forging, upset forging, extrusion forging, powder forging and all processes where heavy water cooling is used.

Available Properties
  • Density
  • Hardness, Rockwell C
  • Hardness, Vickers
  • Tensile Strength, Ultimate
  • Tensile Strength, Ultimate at Elevated Temperature
  • Tensile Strength, Yield
  • Tensile Strength, Yield at Elevated Temperature
  • Elongation at Break
  • Reduction of Area
  • Modulus of Elasticity
  • Modulus of Elasticity at Elevated Temperature
  • Impact Test
  • CTE, linear 20°C
  • Thermal Conductivity
   
Property Data

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