Insulating Bricks
ROYAL-HFK
ROYAL-HFK is an insulating refractory brick manufactured by Royal Refractories for backup and hot-face insulation in furnaces and kilns. Typical values: Al2O3 Min 40%, Service Temp 1400°C and PCEOrton 30/31 1665/1683. Supplied as 2.0 kg. Made in Wankaner, Gujarat — full technical data sheet available below.
Weight: 2.0 Kg
Technical Properties
| Service Temp | 1400°C |
| PCEOrton | 30/31 1665/1683 |
| App Porosity Min | ≥60% |
| Bulk Density | 1.00 - 1.10 g/cm³ |
| CCSMin | ≥30 Kg/cm² |
| PLC | +/-1.5% at 1400°C/5 hrs |
| Thermal Conductivity600 | 0.32 kcal/m·hr·°C |
Chemical Analysis
| Al2O3 Min | 40% |
| Fe2O3 Max | 1.5% |
Additional Information
| Size Tolerance | ±1 mm on standard bricks |
Typical applications
- • Furnace backup insulation
- • Kiln insulation systems
- • Energy-efficient thermal lining assemblies
Industries using this product family
Related Insulating Bricks
Technical Properties
| Service Temp | 1100°C |
| PCEOrton | 23 / 1605 |
| App Porosity Min | ≥60% |
| Bulk Density | 0.9 - 1.0 g/cm³ |
| CCSMin | ≥22 Kg/cm² |
| PLC | +/-0.5% at 1100°C/5 hrs |
| Thermal Conductivity600 | 0.25 kcal/m·hr·°C |
Chemical Analysis
| Al2O3 Min | 22% |
| Fe2O3 Max | 2.0% |
Additional Information
| Size Tolerance | ±1 mm on standard bricks |
Technical Properties
| Service Temp | 1300°C |
| PCEOrton | 29 / 1659 |
| App Porosity Min | ≥60% |
| Bulk Density | 0.95 - 1.05 g/cm³ |
| CCSMin | ≥30 Kg/cm² |
| PLC | +/-1.5% at 1350°C/5 hrs |
| Thermal Conductivity600 | 0.30 kcal/m·hr·°C |
Chemical Analysis
| Al2O3 Min | 30% |
| Fe2O3 Max | 2.0% |
Additional Information
| Size Tolerance | ±1 mm on standard bricks |
Technical Properties
| Service Temp | 1300°C |
| PCEOrton | 23 / 1605 |
| App Porosity Min | ≥70% |
| Bulk Density | 0.50 - 0.55 g/cm³ |
| CCSMin | ≥8 Kg/cm² |
| PLC | +/-1% at 1250°C/24 hrs |
| Thermal Conductivity600 | 0.22 kcal/m·hr·°C |
Chemical Analysis
| Al2O3 Min | 40% |
| Fe2O3 Max | 1.0% |
Additional Information
| Size Tolerance | ±1 mm on standard bricks, ±1% or ±1.5 mm on shaped bricks |
Technical Properties
| Service Temp | 1350°C |
| PCEOrton | 31 / 1683 |
| App Porosity Min | ≥60% |
| Bulk Density | 0.75 - 0.80 g/cm³ |
| CCSMin | ≥25 Kg/cm² |
| PLC | +/-1% at 1300°C/24 hrs |
| Thermal Conductivity600 | 0.27 kcal/m·hr·°C |
Chemical Analysis
| Al2O3 Min | 50% |
| Fe2O3 Max | 1.2% |
Additional Information
| Size Tolerance | ±1 mm on standard bricks, ±1% or ±1.5 mm on shaped bricks |
Technical Properties
| Service Temp | 1400°C |
| PCEOrton | 33 / 1743 |
| App Porosity Min | ≥58% |
| Bulk Density | 0.78 - 0.85 g/cm³ |
| CCSMin | ≥30 Kg/cm² |
| PLC | +/-1% at 1400°C/5 hrs |
| Thermal Conductivity600 | 0.32 kcal/m·hr·°C |
Chemical Analysis
| Al2O3 Min | 58% |
| Fe2O3 Max | 1.2% |
Additional Information
| Size Tolerance | ±1 mm on standard bricks, ±1% or ±1.5 mm on shaped bricks |
Technical Properties
| Service Temp | 1500°C |
| PCEOrton | 36 / 1804 |
| App Porosity Min | ≥58% |
| Bulk Density | 1.00 - 1.10 g/cm³ |
| CCSMin | ≥30 Kg/cm² |
| PLC | +/-1% at 1500°C/5 hrs |
| Thermal Conductivity600 | 0.36 kcal/m·hr·°C |
Chemical Analysis
| Al2O3 Min | 60% |
| Fe2O3 Max | 1.0% |
Additional Information
| Size Tolerance | ±1 mm on standard bricks, ±1% or ±1.5 mm on shaped bricks |
Need help confirming this grade for your lining requirement? Contact Royal Refractories for technical and quotation support.