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  Black Silicon Carbide
  Green Silicon Carbide
  Boron Carbide
  White Aluminum Oxide
  Brown Aluminum Oxide
  Calcined Alumina
  Reactive Grade Alumina
  Polishing Grade Calcined Alumina
   PC 12 - 2
   PN-6 & PN-612
   PN-502 VPC-11
   PN - 505
  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-6 and PN-612

The Martinswerk PN-6 and PN-612 are fine grained, soft calcined aluminum oxides utilized in a variety of polishing applications. Specified as high brilliance polishing agents for stainless steel and steel. The PN-6 and PN-612 are often used for fine grinding of plastics and lacquers.
 
Typical Analysis
 
PN-6
PN-612
(Al2O3)
»99.8%
»99.8%

(SiO2)

<0.03%
<0.03%
(Fe2O3)
<0.03%
<0.03%
(Na2O) total
<0.10%
<0.10%
(CaO)
<0.03%
<0.03%
Alpha Al2O3
>90%
>70%
Loss on Ignition
<0.2%
<0.2%
Specific Surface Area (BET)
4.0-5.5 m2/g
8.0-15.0m2/g
Primary Crystal Size
0.5 um
0.5 um
Bulk Density
»750 kg/m3
»750 kg/m3
 
Typical Particle Size Distribution
<106 um
0-2%
0-2%
106-63 um
1-10%
1-8%
63-45 um
10-30%
5-30%
<45 um
60-90%
60-90%
 


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