Cr2O3 :  50% basis (rejection if below 48% .

   Cr:Fe   :3.0:1 min.

   SiO2    : 10.0% max.

   Al2O3   :16.0% max.

   MgO      :20.0% max.

   Phosphorous (P) : 0.09% max.

   Sulphur  (S)           : 0.09% max.

   Moisture content  : 5.0% max.

   physical size  : 0~10mm : 10% MAX.

                               11~300MM : 90% MIN .