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R-Max Product Comparisons

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Abrasion or erosion is the mechanical wearing away of a solid. In industrial processes, abrasion or erosion is a major concern and a maintenance issue. In the high temperature processes, monolithic refractories play a major role in reducing the detrimental effects of abrasion or erosion on the availability and economics of the industrial process. R-MAX abrasion resistant products are formulated to minimize downtime and maximize the availability of abrasion-prone processes. 

R-MAX MP is a 2400°F (1260°C) multi-purpose (MP) abrasion resistant castable which can be hand-packed, rammed, and gunned. The product’s zero-slump and soft, “easy to install” texture results in high handpack installation rates. R-MAX MP can be hand-packed or rammed directly into hexmesh for abrasion resistant linings.  R-MAX MP features extremely high cold crushing strength and extremely low abrasion loss. 

R-Max C, R-MAX PC and R-MAX G are 3200°F (1760°C) low cement, high performance castables that are designed to have very low abrasion loss and maximized physical properties. R-MAX C can be installed by vibration casting methods. R-MAX PC can be installed by pump casting methods.  R-MAX G is installed using conventional dry-gunning equipment. 

FURNACUBED R-MAX is a 70% alumina, high performance castable that has excellent non-wetting characteristics in molten aluminum contact applications. It also has maximum abrasion resistance and high strengths. This product is intended to be used in high wear areas of aluminum melting furnaces. It can be installed using vibration casting, pumping, or shotcrete methods. 

R-MAX SF is a self-leveling, abrasion resistant castable that should be used in areas of severe abrasion and when a self leveling castable is desired. This product has a maximum service temperature of 3400°F and a 93% alumina content.

R-MAX PC QT is a unique 80% alumina abrasion resistant castable that does not require a traditional "ramp and hold" heat up procedure.  This castable can be installed by virbration cast, or pump casting methods.

Product   R-Max MP  R-Max C  R-Max SF  Furnacubed R-Max  R-Max PC  R-Max PC QT  R-Max G 
 Maximum Service Temp ºF   2400 3200  3400  2730   3200 3200  32 00
 ºC  1260 1760  1870  1499  1760  1760  1760 
 Bulk Density lb/Ft3 220ºF   170  182  173  170    164 
 kg/m3, 110ºC   2720  2912  2768  2720    2624 

lb/Ft3 15000ºF		  180 167  180  170  167  174  159 
 kg/m3, 815ºC  2880 2672  2880  2720  2672  2784  2544 
 Cold Crushing Strength  lb/Ft2 1500ºF  20000-25000 20000-25000  18000-22000  20000-25000  12000-15000  21500  10000-14000 
 kg/cm2, 815ºC  1400-1750 1400-1750 1260-1540  1400-1750  840-1050  1505  700-980 
 Modulus of Rupture   lb/Ft2 1500ºF  4000-7000 2500-3300  4000-6000  2500-3300  2500-3500    1800-2300 
  kg/cm2, 815ºC  280-490 175-231  280-420  175-231  175-231    126-161
 Thermal Conductivity (K-Factor)  BTU,ft2,in.,1000ºF  12.1 11.0  12.0  11.0  11.0    11.0 
 W/m, K, 540ºC  1.74 1.59  1.73  1.59  1.59    1.59 
 BTU,ft2,in.,1500ºF  11.2 10.0  11.0  10.0  10.0    10.0 
 W/m, K, 815ºC  1.61 1.44  1.58  1.44  1.44    1.44 
 BTU,ft2,in.,2000ºF    10.0 11.0  10.0  10.0    10.0 
 W/m, K, 1095ºC    1.44 1.6  1.44  1.44    1.44 
 Erosion Loss cc, 1500ºF (815ºC)  <4.0   <4.0   <4.0   <4.0   <5.0   3.0  <5.0 
 Permanent Linear Change %, 1500ºF (815ºC)   -0.2 to -0.4 -0.1 to -0.3  -0.1 to -0.3   -0.1 to -0.3   -0.1 to -0.3   -0.1  -0.1 to -0.4 
 Chemical Analysis Al2O3   79.5 71.2  92.8  71.9  71.2  80.2  73.1 
 SiO2  11.7 24.1  5.4  23.2  24.1 14.2  22 
 Fe2O3  0.9 1.3  0.1  0.8  1.3  1.1  1.4 
 TiO2  2.2 1.5    1.9  1.5  2.7  1.6 
 CaO  2.9 1.7  1.5  1.8  1.7  1.1  1.7 
 MgO  2.9        0.2
 Alkalies   0.2  0.2  0.4  0.2  0.5