NR-85STEEL boards are high strength calcium silicate based insulation boards.
Ladle Calcium Silicate Insulation Rigid Boards are high-temperature insulation materials specifically engineered for use in metallurgical applications, particularly in ladles and tundishes. These boards provide exceptional thermal resistance, minimizing heat loss and maintaining consistent temperatures during molten metal handling. Their rigid structure ensures durability and ease of installation, contributing to improved energy efficiency and process control in steelmaking and other high-temperature industrial environments.
Thermal shrinkage 12hr | 1000℃ | 1000℃ | 1000℃ | 1000℃ | 1000℃ | 1000℃ | |
@ Length or Width | % | 0.2 | 0.20 | 0.2 | 0.4 | 0.4 | 0.40 |
@ Thickness | % | 1.4 | 1.40 | 1.3 | 1.5 | 1.0 | 1.0 |
Screw Holding Strength @ 22mm penetration | kg | 80 | 105 | 110 | 120 | 120 | 145 |
Coefficient of Thermal Expansion | /℃ | 6.5*10-6 | 6.4*10-6 | 6.4*10-6 | 6.4*10-6 | 6.3*10-6 | 6.1*10-6 |
Standard Sizes | 1200 X 600 mm , 1200 X 1200 mm , 2400 x 1200mm, 2520 x 1200mm | ||||||
Available Thickness | 13, 19, 25, 27, 32, 38.1 44, 51.4, 63, 76.1, 101.6 | ||||||
Advantages | Low thermal conductivity, Non‐wetting, Excellent mechanical strength, Asbestos free, easy to install, dimensional stability | ||||||
Applications | • Dip tubes • Pouring spouts • Hot‐top rings • Stopper pins • End dams • Floats • Launders, Holding furnace insulation linings, ladle insulation boards. |
Note: The physical and chemical properties listed represent typical, average values obtained in accordance
with accepted test methods and are subject to normal manufacturing variations. They are supplied as a technical service and are subject to change without notice
The boards are characterized by their low thermal conductivity, high compressive strength, and excellent thermal stability at elevated temperatures, often exceeding 1000°C. They exhibit minimal shrinkage and possess a low density, reducing the overall weight of the insulated structure. Furthermore, their non-combustible nature and resistance to chemical attack from molten metals and slags contribute to a safer and more reliable operational environment. The precise manufacturing process produces boards with consistent properties, allowing for predictable thermal performance.
Very Strong Boards with high compressive strength
High temperature resistance up to 1200°C
Low Thermal Conductivity at high temperatures
High Electrical Resistance at high temperature
High fire resistance and heat shield properties
Easy to cut and punch
Available in moulded pipe section for pipe insulation
The primary applications of Ladle Calcium Silicate Insulation Rigid Boards are in the lining of ladles and tundishes used in steelmaking, Their ability to maintain molten metal temperatures reduces energy consumption and improves the quality of the final product. They are also used in other high-temperature industrial furnaces and kilns where efficient thermal insulation is crucial. Additionally, these boards are utilized in backup insulation systems to enhance the overall thermal performance of refractory linings, extending the lifespan of the equipment and minimizing downtime.
Ladle & Tundish Insulation
Lime Kiln and Cement Kiln Insulation
High temperature insulation Gaskets
Boiler & Furnace Insulation
Oil & Gas Burners Insulation
Furnace, Dryer, and Oven Insulation
High temperature Pipe Insulation
Refractory insulation expansion joints
Metal clad Gaskets fillers
Gaskets for centrifugal casting
Glass rollers as washers on mandrel
Stainless Steel Plant Rollers Insulation
Electrical & home appliances insulation gaskets
Fire Resistant Doors, Lifts, Safes, Cupboards