WAM® 80 EMT – Enhanced Matrix Technology

WAM® 80 EMT is a high temperature enhanced monolithic castable.  It has the properties of a low cement castable with the robustness of a standard cement castable. It is composed primarily of a bauxite containing aggregate. This allows the material to be suitable for use up to 2900oF.


Similar to standard cement castables, EMT castables are very forgiving and are less susceptible to temperature variations relative to set and working times and are very easy to place with typical vibration methods. However, like a low cement castable they require less water which results in better physical properties. In addition, unlike a standard cement castable, EMT castables can be pumped and shotcreted.


WAM® 80 EMT finds application in several areas as a high temperature, thermal protection material. This material is commonly used in areas that undergo increased amount of abrasion and impact. This includes lip rings, troughing, furnace doors and lintels, ladles, and other furniture  for iron and steel foundries and mills. It has been used in copper furnaces and a variety of rotary kiln areas and precast impact pads or similar shapes.

Typical Technical Data
WAM® 80 EMT                                                                                        
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Classification:Enhanced Monolithic Castable
Placement Method:Vibration Casting, Pumping / Shotcreteing
Available Application Packages:AL - Aluminum Penetration Resistant
C - Coarse Aggregate
F - Fine Aggregate
AR - Alkali Resistant
TSR - Thermal Shock Resistant
Typical Water Requirement (%wt):7.5
Material Required for Estimating (lb/ft3):165
Maximum Recommended Service Temperature (°F):2900

Calculated wt.% Based on Common Oxides

Aluminum Oxide (Al2O3):77.6 %
Silicon Dioxide (SiO2):12.3 %
Titanium Dioxide (TiO2):3.3 %
Iron(III) Oxide (Fe2O3):1.2 %
Calcium Oxide (CaO):5.3 %
Magnesium Oxide (MgO):0.2 %
Combined Alkali Oxide (Na2O + K2O):0.1 %


Modulus of
Rupture (psi)
Cold Crushing
Strength (psi)
Linear Change (%)
After 23017018109220n/a
After 150016513508200-0.1
After 2800n/an/an/a+0.4

Additional technical data may be available. Please contact your sales representative for more information.
Data on this table represent typical properties and cannot be used for specification purposes.