WHYTHEAT C
A 50% alumina dense castable rated to 1500 °C, vibration cast at 10.5–11.5% water. It reaches 380 kg/cm² after drying, drops to 220 kg/cm² at 1100 °C and recovers to 610 kg/cm² after firing at 1550 °C — the strength dip through the intermediate range is normal for a hydraulically bonded castable and is why the heat-up curve matters.

| NATURE OF BOND | HYDRAULIC |
|---|---|
| INSTALLATION | VIBRATION CASTING |
| MAX.SERVICE TEMPERATURE | 1500°C |
| MAXIMUM GRAIN SIZE | 5 mm |
| WATER REQUIRED FOR CASTING | 10.5 - 11.5% |
| Al₂O₃ content, % | 50.5 |
| CaO | 4.5 |
| Fe₂O₃ content, % | 1.25 |
| Dry density g/cc After drying at 110°C/ 24hrs | 2.17 |
| CCS kg/cm2 After drying at 110°C/ 24hrs | 380 |
| After heating at 1100°C/ 3hrs | 220 |
| After heating at 1550°C/ 3hrs | 610 |
| % Retained on maximum size | 0.8 |
| Refractoriness, Orton /°C | 30/1665 |
| After heating at 1100°C/ 3hrs | -0.15 |
| After heating at 1500°C/ 3hrs | -1.5 |
| PACKING | 25KG BAG |
Values as published by the manufacturer. Manufacturer TDS governs.
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