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Calcium Silicate Boards

Peerless Hi-Temp fabricates products from a variety of calcium silicate boards for OEM equipment builders, general contractors, architects, and end users. Let us know your specifications, including thickness and surface area, and we’ll help you choose the best material to use for your application.

Calcium silicate boards are non-asbestos, high temperature structural insulating boards that exhibit good thermal shock resistance and stability, consistently low thermal conductivity, high structural strength at elevated temperatures, incombustibility, electrical insulating properties when dry, excellent machinability, insolubility in water, and non-corroding properties.

Marinite

Marinite boards by are heat treated formulations for use in conveying, containing, handling and forming molten aluminum and other non-ferrous metals. Made of fibers, micro silica and a hydrothermally-produced inorganic binder, Marinite is the ideal material for conveying and controlling the flow of aluminum. High heat treatment removes excess water, and minimizes shrinkage that would normally occur in service.

Oven dried formulations are used in a variety of heat insulating processes, fire protection and machined parts. Selection is commonly based on a balance between strength and insulating qualities. Examples include oven walls and linings, soldering insulation, fire doors, fire training burn buildings, cable trays, personnel protection, and as USCG-approved insulation for marine ships and off-shore rigs. Back-up insulation applications include ladles, torpedo cars and tundishes in the iron and steel industry, lime and cement plant rotary kilns, and aluminum die cast holding furnaces.

Key Products

Marinite A is a strong, machinable, non-asbestos inorganic insulation panel for conveying, containing, handling and forming molten aluminum and non-ferrous metals. The hardest of the Marinite boards.

Application: Floats, spouts, stopper pins, distribution boxes, dams, baffles, filter boxes, troughs, head boxes, transition plates, hot top rings, aluminum holding, die-cast furnaces.

Characteristics: Metals do not adhere, even when cooled and solidified. Will not contaminate metals and requires no facing wash. Conveys metals with less heat loss and at a uniform temperature requiring a lower handling temperature.

Sheet Size: 2’ x 4’, 4’ x 4’, 4’ x 8’; 1/2,3/4, 1, 1-1/4, 1-1/2, 1-3/4, 2, 3” thicknesses. 1/2” is not available as a 4’ x 8’ sheet.

Thickness tolerance: +/- 1/32"

Density: 45 pcf

Operating Temperature: 1500°F (in aluminum contact applications)

Compressive Strength: 2400 psi

Thermal Conductivity: 1.92 (800°F), 1.95 (1000°F), 1.99 (1100°F)

Manufacturer- BNZ Materials, Inc. 

Marinite C is a strong, machinable, non-asbestos inorganic panel for conveying, containing, handling and forming molten aluminum and non-ferrous metals. The hardest of the Marinite boards.

Application: Floats, spouts, stopper pins, distribution boxes, dams, baffles, filter boxes, troughs, head boxes, transition plates, hot top rings, aluminum holding, die-cast furnaces.

Characteristics: Metals do not adhere, even when cooled and solidified. Will not contaminate metals and requires no facing wash. Conveys metals with less heat loss and at a uniform temperature requiring a lower handling temperature.

Sheet Size: 2’ x 4’, 4’ x 4’, 4’ x 8’; 1, 1-1/2, 2” thicknesses.

Thickness tolerance: +/- 1/32"

Density: 54 pcf

Operating temperature: 1500°F

Compressive Strength: 1600 psi

Thermal conductivity: 99 (400°F), 1.06 (1000°F)

Manufacturer- BNZ Materials, Inc. 

Marinite P is a non-asbestos incombustible self-supporting board with insulating values, fire safety and exceptionally high compressive strength. Non-asbestos.

Application: Platen press operations, foundry core pallets, back-up insulation for rotary kilns and steel ladles.

Characteristics: Formed from calcium silicate with inert fillers and reinforcing agents. Structural strength and thermal insulation in one board.

Sheet Size: 48 x 96; 1/2, 3/4, 1, 1-1/2 and 2” thicknesses

Thickness tolerance: +/- 1/32"

Density: 60 pcf

Operating Temperature: 1800°F

Compressive Strength: 3050 psi – for 5% deformation

Thermal Conductivity: 1.13 (400°F), 1.16 (800°F), 1.17 (1000°F)

Manufacturer- BNZ Materials, Inc. 

Marinite I is a non-asbestos, structurally strong incombustible panel designed with structural strength and high thermal insulating properties.

Application: For the construction of ovens, dryers, and insulating housings for the retention and control of heat. Can be machined to create heat baffles and insulating parts.

Characteristics: Formed from calcium silicate with inert fillers and reinforcing agents. An easily erected material that provides structure and insulation. Resistant to damage, corrosion and water.

Sheet Size: 48 x 96; 1/2, 3/4, 7/8, 1, 1-1/4, 1-1/2, 2 and 3” thicknesses

Thickness tolerance: +/- 1/32"

Density: 46 pcf

Operating Temperature: 1350°F

Compressive Strength: 1000 psi

Thermal Conductivity: .81 (400°F), .81 (800°F), .86 (1000°F)

Manufacturer- BNZ Materials, Inc. 

Marinite M is a structurally strong panel of non-asbestos, incombustible material with high thermal insulating properties.

Application: For the construction of ovens, dryers, and insulating housings for the retention and control of heat. Can be machined to create heat baffles and insulating parts.

Characteristics: Formed from calcium silicate with inert fillers and reinforcing agents. An easily erected material that provides structure and insulation. Resistant to damage, corrosion and water.

Sheet Size: 48 x 96; 1/2, 3/4, 7/8, 1" thicknesses

Thickness tolerance: +/- 1/32"

Density: 46 pcf

Operating Temperature: 1350°F

Compressive Strength: 1000 psi

Thermal Conductivity: .81 (400°F), .81 (800°F), .86 (1000°F)

Manufacturer- BNZ Materials, Inc. 

Materials Manufactured By