WHYTHEAT K
A 59% alumina dense castable rated to 1600 °C, cast at 10.6–11.8% water, 2.2 g/cc dried, reaching 400 kg/cm² after firing at 1550 °C. Cone equivalent is Orton 31 / 1683 °C. It is the general-purpose dense grade at this temperature rather than the strongest one.

| NATURE OF BOND | HYDRAULIC |
|---|---|
| INSTALLATION | VIBRATION CASTING |
| MAX.SERVICE TEMPERATURE | 1600°C |
| MAXIMUM GRAIN SIZE | 5 mm |
| WATER REQUIRED FOR CASTING | 10.6 - 11.8% |
| Al₂O₃ content, % | 59 |
| CaO | 4.5 |
| Fe₂O₃ content, % | 1.1 |
| Dry density g/cc After drying at 110°C/ 24hrs | 2.2 |
| CCS kg/cm2 After drying at 110°C/ 24hrs | 380 |
| After heating at 1100°C/ 3hrs | 225 |
| After heating at 1550°C/ 3hrs | 400 |
| % Retained on maximum size | 0.8 |
| Refractoriness, Orton /°C | 31/1683 |
| After heating at 1100°C/ 3hrs | -0.15 |
| After heating at 1500°C/ 3hrs | -1.7 |
| PACKING | 25KG BAG |
Values as published by the manufacturer. Manufacturer TDS governs.
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