Refractory Magnesia Bricks High Density Chinese Manufacturer

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Description of Refractory Magnesia Bricks

Refractory Magnesia Bricks High Density Chinese Manufacturer is kind of structural ceramics, with insulation resistance, voltage resistance, high strength, good thermal conductivity, dielectric loss, stable electrical performance characteristics.

Used in electronic ceramic substrates, ceramic electrical insulation, vacuum devices, devices porcelain, spark plugs and other products.

We can make the part by hot injection pressing, dry pressing, isostatic pressing and extrusion productive technology etc


Features of Refractory Magnesia Bricks

(1) Excellent refractoriness 

(2) Excellent chemical stability and thermal stability

(3) Low thermal conductivity, low thermal capacity

(4) Resist to external mechanical forces

(5) Able to withstand any thermal shock

(6) Generate no gaps between modules


Specifications for Refractory Magnesia Bricks


Item                                                                                Unit                            95 Al2O3             96 Al2O3             99 Al2O3                     
Physical Characteristics       Bulk density                     g/cm33.63.63.9
Water absorption           %000
Mechanical Characteristics   Flexural strength             Mpa320340360
Hardness Vickers           Gpa12.213.515.6
Elastic modulus               Gpa280320370
Poisson’s ratio                 -
Thermal Characteristics   Linear expansion coefficient                 (200C-5000C) 10-6/0C7.17.28
Thermal conductivity       w/(m.k)162432
Specific Heat                     *10-3J/(kg*K)0.780.780.9
Electrical CharacteristicsDielectric constant (1MHZ) -99.49.9
Dielectric loss angle        *10-41551
Dielectric strength             *106V/m121515
Processing technology
Process range (mm)
Outside Diameter1---300
Inside Diameter0.5---300
Accuracy of working (mm)
Straightness 0.005
Roughness 0.05
Fit clearance0.005




Images of Refractory Magnesia Bricks


Applications of Refractory Magnesia Bricks

Common applications :door seals or caulking for ovens, furnaces and boilers, expansion joints, cable or pipe wrapping, high temperature seals or gaskets. 

Refractory Magnesia Bricks have been widely used in welding, foundry works, aluminum and steel mills, boiler insulation and seal, exhaust systems,  shipyards, refineries, power plants and chemical plant


FAQ of Refractory Magnesia Bricks

1.    Can we visit your factory?

Sure, we warmly welcome you to visit our factory any time. Seeing is believing. 

2.    After an order is placed, when you will deliver?


3.    Does your company accept customization?

We have a strong technical force. Our production methods are unique in that in allows us to be responsive to the needs and specification of our customers.  We use a batch method of production, so each technician on the line is responsible for a specific area of expertise. at any point in our production, we can make changes and incorporate the feedback from our clients. We accept OEM service.

4.    How is your products quality?

We specialize in fire brick ,our products are superior in quality to any other brand available on the market. These fire brick are gaining popularity because of their fine quality, competitive prices, and our honest dealings.


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