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  Black Silicon Carbide
  Green Silicon Carbide
  Boron Carbide
  White Aluminum Oxide
  Brown Aluminum Oxide
  Calcined Alumina
  Reactive Grade Alumina
   MR-32
   MR-41
   MR-42
   MR-52
   MR-70
  Polishing Grade Calcined Alumina
  Sub Micron Alumina
  Nano Sized Alumina
  Sinterable Silicon Carbide Powders
  Refractory Materials
  Abrasive Media
  Lapping Slurries
  Spherical Media
  Surplus Raw Materials
   
   
   
   
   
   

Reactive Grade Alumina MR-42

The reactive grade MR-42 alumina from Martinswerk is well suited for oxide ceramics demanding an extremely high Al2O3 content. The MR-42 is well suited for casting and extrusion operations. With an average particle size of 1.5-3.0 microns and <0.1% Na2O, this powder is a highly reactive binding agent for technical ceramics.

 
Typical Analysis
(Al2O3)
99.8%

(SiO2)

0.01-0.05%
(Fe2O3)
0.01-0.03%
(Na2O)
<0.01%
(CaO)
0.01-0.05%
Alpha Al2O3
>95%
Loss on Ignition
<0.1%
Specific Surface Area (BET)
1.3-3.4 m2/g
Primary Crystal Size
»2.0 um
Bulk Density
»700-950 kg/m3
 
Pressed Density: (50 Mpa) 2.2 g/cc
Fired Density: (1600°C, 2hr) 2.7 g/cc
 
 
Typical Particle Size Distribution

d10
0.45-0.65
um
d50
0.5-3.0
um
d90
4.0-9.0
um
0%
>45
um
 


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