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Specifications
Manganese | 70 to 75 % |
---|---|
Silicon | 1.8 to 2.0% |
Carbon | 6 to 8% |
Phosphorous | 0.50% max. |
Sulphur | 0.05% max. |
Size | 25mm to 150mm-90% +/- 10% |
Specifications
Manganese | 60 to 65 % |
---|---|
Silico | 13 to 17% |
Carbon | 2.5% max. |
Phosphorous | 0.30% max. |
Sulphur | 0.05% max. |
Size | 25mm to 150mm-90% +/- 10% |
Chemical Composition
Silica (SiO2) | 98 to 99% |
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Alumina (Al2O3) | 0.04% |
Ferric Oxide (Fe2O3) | 0.04% |
Titanium Dioxide (TiO2) | 0.08% |
Manganese Oxide (MnO) | Nil |
Calcium Oxide (CaO) | Nil |
Magnesium Oxide (MgO) | 0.11% |
Sodium Oxide (Na2O) | 0.05% |
Potassium Oxide (K2O) | Nil |
Loss in ignition | 0.08% |
Sintering Temp. | 1200oC |
Max. Service Temp. | 0 |
Grain Sizes | 0 to 5 mm |
Physical Properties
Color | Pink, White, Gray, Brown |
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Crystal system | Triclinic or Monoclinic |
Fracture | Along cleavage planes |
Mohs scale hardness | 6 |
Luster | Vitreous |
Diaphaneity | Opaque |
Birefringence | First order |
Cleavage | Two or Three |