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  Black Silicon Carbide
  Green Silicon Carbide
  Boron Carbide
  White Aluminum Oxide
  Brown Aluminum Oxide
  Calcined Alumina
   Precision Graded
  Calcined Alumina
   MZK
   MZK-3
   PN-202
   DN-206
   MZS
   MZS-3
   MPS
   MDS
   MDS-6 
  Reactive Grade Alumina
  Polishing Grade Calcined Alumina
  Sub Micron Alumina
  Nano Sized Alumina
  Sinterable Silicon Carbide Powders
  Refractory Materials
  Abrasive Media
  Lapping Slurries
  Spherical Media
  Fumed Silica
  Cast Polymer Fillers
  Surplus Raw Materials
   
   

Calcined Alumina - PN 202

The Martinswerk PN - 202 is a soft, fine grained calcined alumina utilized in variety of polishing applications. Specified for polishing agents, pastes, slurries and emulsions for stainless steel , non ferrous metals as well as steel. The PN -202 is often used for fine grinding of plastics, lacquers and some forms of glass.
 
Typical Analysis
(Al2O3)
»99.3 %

(SiO2)

< 0.03 %
(Fe2O3)
< 0.03 %
(Na2O) total
< 0.05 %
(CaO)
< 0.05 %
Alpha Al2O3
>70%
Loss on Ignition
< 0.03 %
Specific Surface Area (BET)
8 - 15 m²/g
Primary Crystal Size
1.0 um
Bulk Density
»550 kg/m3
 
Typical Particle Size Distribution

0-10% maximum

 >45 um
d90 20-40 um
d50 2.0-4.0 um
d3 0.5-0.7 um
 


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