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Item # Kaocrete 28-L1, Kaocrete Dense Castable (2800ºF)

Foundry Service sells only high quality, pure, high density castables (monolithic)suitable for high temperature structural applications. These dense castables are available in various grades suitable for a specific range of operational conditions. Our refractory castables are hydraulic setting and can be casted or molded to any shape. All of these castables can also be modified for gunning applications. Foundry Service can pre-cast and fire parts and shapes per customer supplied drawings as well.

Specifications  · Cold Crushing Strength  · Modulus of Rupture  · Note  · Applications



Calcium Oxide


Density at 1500ºF

121 to 133 lb/ft³

Maximum Operating Temperature

2800 ºF

Standard Packaging

55# Bag

Cold Crushing Strength

Cold Crushing Strength (Dried 18-24 hrs. at 220ºF [104ºC])

2700 to 4000 psi
18.6 to 27.6

Cold Crushing Strength (Fired 5 hrs. at 1500ºF [816ºC])

1700 to 4000 psi
11.8 to 27.6

Cold Crushing Strength (Fired 5 hrs. at Use Limit)

4000 to 6000 psi
27.6 to 41.4

Modulus of Rupture

Modulus of Rupture (Dried 18-24 hrs. at 220ºF [104ºC])

120 to 200 psi
0.83 to 1.38

Modulus of Rupture (Fired 5 hrs. at 1500ºF [816ºC])

90 to 250 psi
0.62 to 1.72

Modulus of Rupture (Fired 5 hrs. at Use Limit)

150 to 300 psi
1.03 to 2.07

Foundry Service also offers low & medium cement castables, phosphate bonded castables, clay bonded castables, special duty castables, and aluminum resistant castable grades. Please call or e-mail us for additional information.

  • Around water-cooled boiler tubes
  • Boiler ash hoppers
  • Kiln cars
  • Piers
  • Car bottoms
  • Seal tanks in FCCU vessels
  • Burner blocks
  • Ladle metallurgy lance material


·  ATM-2000 Platens

·  ATM-2000-Tool

·  ATM-2000 Tool Form

·  ATM-2000 Tools

·  Ceramic Heaters

·  Ceramic Tool


Data Sheet for Kaocrete Dense Castable
(PDF, 246KB)

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Foundry Service & Supplies, Inc. | Heat And Corrosion Resistant Industrial Insulation & Construction Materials