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Cubic Zirconia

Cubic Zirconia

Für diese Artikel bestätigen wir hiermit RoHS-Konformität

  • ZrO 2Si
  • Density 5,65
  • Fusion Temperature 2700°C
  • Thermal expansion 2,33
  • Thermal expansion 2,33
  • Hardness 8,5 mohs.
  • Refractive index nd 2,177
  • Dispersion factor 0,065
  • At the customer's request, we can produce spheres out of several different crystals as far as the hardness is sufficiant, for example :Spinel, Yag, Silicium,...

Quality control
A.F.B.M.A.* GRADE TOLERANCES AND TERMINOLOGY.
GRADE TOLERANCE CHART

Tabelle

  • Basic diameter: The size ordered which is the basis to which the basic diameter tolerances apply. The basic diameter is specified by a fraction plus a decimal or a decimal only to the sixth place. (example: 1/4'' + .0002'' or .2502'' - 15/64'' +<br> .0003'' or .234675'').
  • Basic diameter tolerance: The maximum allowable deviation of any ball diameter from the basic diameter, in any shipments to fill orders for that basic diameter.
  • Diameter tolerance per ball: The permissible difference between the largest diameter and the smallest diameter measurable on one ball.
  • Diameter tolerance per unit container: The permissible range of the average diameters of the individuals balls within any one unit container.
  • Grade: The numerical value of the diameter tolerance per ball expressed in a millionth of an inch.
  • Marking Increments: The standard unit steps in a millionth of an inch used to express the specific diameter.
    Some materials prevent us from obtaining a better result
    of tolerance than those obtained at level 10. On the other
    hand, some materials, mainly ceramics, make it possible
    to obtain dimensions with a level 4 or 5 , RA is then
    higher than in the above table.