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Low Cement Castables

Name MST
°C		 Chemical analysis
(fired basis) 		Cold Crushing Strength
MN/m3 		PLC%
MST		 W/MK§
1000°C		 Density
kg/m3		 % Water addition Max Grain
Size mm
Al2O3 SiO2 Fe2O3 Misc Dry 1000°C MST
Joncast LC95
1800 94.5 2.6 0.2   100 80 80 -0.5 2.20 3100 4-5 8 or 5
Joncast LC87
1750 85.5 8.0 1.2   85 65 145 -1.1 1.75 2850 5-7 5
Joncast LC85
1700 84.7 7.5 1.3   102 85 140 -0.6 1.97 2900 6-8 5
Joncast LC55
1700 58.7 35.0 1.0   75 57 88 +1.5 1.30 2400 6-8 8 or 5
Joncast LC65
 1700 63.7 29.7 1.0   90 71 85 +1.6 1.55 2600 5-7 8 or 5
Joncast LC1600
1600 44.3 51.6 0.8   65 52 80 +0.6 1.04 2200 6-8 8 or 5
Joncast LC1500
1500 43.2 51.6 1.8   47 52 75 -0.7 0.95 2250 6-8 8 or 5
Joncast LC1400
1400 42.3 52.0 1.8   45 50 72 -0.7 0.95 2250 6-8 10 or 5
Joncast LC80ALR
1300 78.8 6.5 1.1 BaSO46.7 100 70 80 +0.2 1.97 3000 5-7 5
Joncast LC82CR
1700 80.9 7.9 1.3 Cr2O3 3.2 75 63 82 -0.4 1.80 2850 5-7 5
Joncast LC SiC30
1500 29.4 34.8 1.8 SiC 30.7 62 58 78 +0.4 3.60 2250 7-9 5
Joncast LC SiC55
 1500 16.2 21.3 1.8 SiC 56.0 75 80 92 +0.4 4.65 2400 7-9 5
Joncast LC SiC75
 1500 7.0 10.0 1.8 SiC 76.9 70 60 70 +0.9 7.30 2450 7-9 5

§ Thermal conductivity mean temperature 1000°C

Sheffield Refractories Limited Joncast LC low cement castables are refractory concretes with reduced amounts of high alumina cement. Low cement castables have superior high temperature characteristics, but are not always the right material for all applications. These materials need to be installed using high energy paddle type mixer, and with precise water addition and using vibration equipment to position for optimum results. Mixers, supervisors and installers can be hired to place these materials. There are many products to chose from and our sales and technical staff will offer advice on materials for different applications