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ISO 75% High Alumina Al2O3 Fire Brick 0.7W/M.K 20% Apparent Porosity

Basic Information
Place of Origin: ISO
Brand Name: CH Refractories
Model Number: CHAH45~85, SK35~SK40
Detail Information
Chemical Composition: Al2O3≥75% Thermal Shock Resistance: ≥4 Times
Apparent Porosity: ≤20% Thermal Conductivity: ≤0.7W/m.K
Cold Crushing Strength: ≥50MPa Bulk Density: ≥2.2g/cm3
Size: Customized Mohs Hardness: ≥9
High Light:

ISO Alumina Fire Refractory Brick


Alumina Al2O3 Fire Brick


0.7W/m.K Alumina Fire Brick

Product Description

Product Description:

High Alumina Fire Brick is a kind of medium grade fire brick made of alumina silica. It has high Mohs Hardness (≥9), low linear change rate (≤0.2%), strong thermal shock resistance (≥4 times), and it can be customized in shape. The apparent porosity of it is also low, ≤20%. It is widely used in high heat applications, like firebox linings, ceramic kilns, boilers, incinerators, and other refractory bricks.



  • Product Name: High Alumina Fire Brick
  • Shape: Customized
  • Size: Customized
  • Linear Change Rate: ≤0.2%
  • Color: Red
  • Mohs Hardness: ≥9
  • Fire Refractory Bricks: Yes
  • Medium Grade Fire Brick: Yes
  • Alumina Silica Fire Brick: Yes

Technical Parameters:

Parameter Value
Thermal Shock Resistance ≥4 Times
Chemical Composition Al2O3≥75%
Cold Crushing Strength ≥50MPa
Apparent Porosity ≤20%
Material High Alumina Fire Brick
Bulk Density ≥2.2g/cm3
Size Customized
Mohs Hardness ≥9
Application Furnace Lining
Refractoriness 1790℃


CH Refractories High Alumina Fire Brick is a perfect choice for furnace lining. These high temperature fire bricks come with a brand name of CHAH45~85, SK35~SK40, Place of Origin ISO, Color Red, Apparent Porosity ≤20%, Thermal Conductivity ≤0.7W/m.K. Low porosity and high thermal conductivity make CH Refractories High Alumina Fire Brick an outstanding choice for furnace lining. The bricks come in custom shapes and sizes, making them an ideal option for refractory lining in high temperature applications such as steel, aluminum, copper, and other metallurgy industries. Our high alumina silica fire brick is made of premium quality raw materials, which provide excellent thermal shock resistance and high refractory lining life. Our products have been tested to meet the highest standards for firebrick performance. With our experienced knowledge and technology, we can provide you with the best products to suit your needs.



CH Refractories’ High Alumina Fire Bricks are fire refractory bricks with a high heat resistance, making them ideal for a variety of high temperature applications. Our high alumina fire bricks come in a variety of models, including CHAH45~85, SK35~SK40, and can be customized to fit your specific needs. Our fire refractory bricks are ISO certified and made with Al2O3≥75%, with a linear change rate of ≤0.2% and a Mohs hardness ≥9. Our fire refractory bricks come in a variety of colors including red, and can be customized to fit your desired shape.



Q1: What is High Alumina Fire Brick?
A1: High Alumina Fire Brick, manufactured by CH Refractories, is a kind of refractory material with high alumina content, ranging from CHAH45~85 and SK35~SK40.
Q2: What are the features of High Alumina Fire Brick?
A2: High Alumina Fire Brick has high temperature resistance, good thermal shock resistance, good acid-base resistance, and low thermal conductivity.
Q3: What is the application of High Alumina Fire Brick?
A3: High Alumina Fire Brick is widely used in industrial furnaces, such as blast furnaces, hot blast stoves, aluminum melting furnaces, and so on.
Q4: Where is High Alumina Fire Brick made?
A4: High Alumina Fire Brick is manufactured by CH Refractories and made to ISO standards.
Q5: What is the main material of High Alumina Fire Brick?
A5: High Alumina Fire Brick is mainly made of high grade bauxite, corundum and other materials.

Contact Details

Phone Number : +86 13721425142

WhatsApp : +8613721425142