Low Cement Castables. SUGGESTED HEATING PROCEDURES for RESCO LOW, ULTRA-LOW, AND NO CEMENT CASTABLES

SUGGESTED HEATING PROCEDURES for RESCO LOW, ULTRA-LOW, AND NO CEMENT CASTABLES The following schedule is recommended for Resco Products' Low, Ultra-Low, and No Cement Castables. Controlled release of water in the castable is necessary to prevent possible build-up of steam pressure and potential steam spalling. Heating can be done before or during unit start-up. The following schedule is recommended FOR SINGLE COMPONENT LININGS UP TO 9 THICK. 1. At anytime following the initial 24 hour curing period, raise the temperature to 300 o F (149 o C). 2. Hold at 300 o F (149 o C) for 1½ hours per inch (25 mm) of lining thickness up to a maximum period of 8 hours. 3. Raise temperature at a rate of 50ºF (28 o C) per hour to operating temperature or 1000 o F (540 o C), whichever is less. If the operating temperature is above 1000 o F (540 o C), then heat at a rate of 100ºF (56 o C) per hour from 1000 o F (540 o C) to operating temperature if the lining is up to 6 thick (152 mm); heat at a rate of 50ºF (28 o C) per hour from 1000 o F (540 o C) to operating temperature if the lining is 6 to 9 thick (152 mm to 229 mm). If the unit is not going into operation, but will be cooled down, hold at the operating temperature for a minimum period of 1½ hours per inch (25 mm) of lining thickness up to a maximum period of 8 hours. The following schedule is recommended FOR SINGLE COMPONENT LININGS OVER 9 THICK. 1. At anytime following the initial 24 hour curing period, raise the temperature to 300 o F (149 o C) at a rate of 50ºF (28 o C) per hour. 2. Hold at 300 o F (149 o C) for one hour per inch (25 mm) of lining thickness. 3. Raise temperature at a rate of 50ºF (28 o C) per hour to 450 o F (232 o C). 4. Hold at 450 o F (232 o C) for one hour per inch of lining thickness. 5. Heat at a rate of 25ºF (14 o C) per hour to 600 o F (315 o C). 6. Hold at 600 o F (315 o C) for one hour per inch (25 mm) of lining thickness. 7. Heat at a rate of 50ºF (28 o C) per hour to 1000 o F (540 o C). 8. Hold at 1000 o F (540 o C) for one hour per inch (25 mm) of lining thickness. If the unit is not going into operation, but will be cooled down, hold at the operating temperature for a minimum period of 1½ hours per inch (25 mm) of lining thickness up to a maximum period of 8 hours. NOTES: If, for any reason, the heating schedule is interrupted by a loss of heat and/or power into the unit, Resco Products recommends that the heating schedule be initiated from the beginning once power and/or heat is restored. At the end user or contractor s discretion, they may elect to attempt to restart the cycle and stabilize the lining temperature at the point of interruption. After the lining has been stabilized, the heat up cycle may be resumed as scheduled from that point on. Resco assumes no liability for this procedure, as it is difficult to determine that point at which the entire lining is stable to prevent the possibility of a steam spall. Temperatures shown are measured at the hot face of the lining for in place heating. Allow the lining to cool down naturally; do not exceed 100ºF (56 o C) per hour. The dry out of refractory entails more than just following a heating schedule. Issues such as burner sizing and location, exhaust location, air volume and velocity, etc need to be addressed. Resco recommends that an experienced dry out company be consulted. Temperatures should be monitored at the refractory surface at several locations in the unit. If steaming is observed at any time during the schedule, the temperature should be held constant until the steaming subsides. The schedule can resume when steaming ends. This schedule is recommended for situations where proper heating equipment and air circulation are used, weep holes are present and unclogged, and the ambient temperature ranges from 60 o to 90 o F. If all of these parameters are not met, a more conservative dry out schedule is needed. Consult your Resco Products, Inc salesman, the RESCO website (www.rescoproducts.com), or call 888.283.5505. Kricon EZ Cast EZ Cubed Vibrocast Vibrocast PC Permacon ProCast Vibrocast EZ Furnacubed Kricon EZ Cast EZ Cubed Vibrocast Vibrocast PC Permacon ProCast Vibrocast EZ Low Cement Castables

Page 2 INDEX Brand Page Brand Page EZ CAST 3000... 15 KRICON 28... 14 EZ CAST 3200... 15 KRICON 30... 14 EZ CAST 3250... 15 KRICON 32... 14 EZ CAST 3400... 15 KRICON 32-70... 14 EZ CAST 3400-SP... 12 KRICON 34... 14 34 ZLC... 8-9 KRICON 34-10... 12 70PC... 8-9 PERMACON 95... 13 75PC... 8-9 ProCAST 80... 13 80PC... 8-9 VIBROCAST 2800... 3 AZS... 8-9 VIBROCAST 3000... 3 20-60... 10 VIBROCAST 50... 3 3000... 8-9 VIBROCAST 50 PC... 3 3200... 8-9 VIBROCAST 56SC... 10 3200... 8-9 VIBROCAST 56SCHP... 10 60 LQY... 8-9 VIBROCAST 60... 3 60-M... 8-9 VIBROCAST 60 PC... 3 80-15... 11 VIBROCAST 70... 4 85... 8-9 VIBROCAST 70M... 4 FS-6LC... 5 VIBROCAST 75... 4 FS-6PC... 5 VIBROCAST 80SC... 11 FURNA 3 65... 7 VIBROCAST 80SCHP... 11 FURNA 3 70... 7 VIBROCAST 85... 4 FURNA 3 75... 7 VIBROCAST 85ULM... 12 FURNA 3 85... 7 VIBROCAST 87 AS... 4 FURNA 3 FS... 5 VIBROCAST ASC-7LTPC... 12 FURNACON 3000... 6 VIBROCAST ASC-8LT(C-C)... 12 FURNACON 50W... 6 VIBROCAST EZ 3250... 13 FURNACON 70W.... 6 VIBROCAST EZ 80... 13 FURNACON 70W.... 6 VIBROCAST FS-6... 5 FURNACON 95... 6 Resco Products, Inc Penn Center West Building 2, Suite 430 Pittsburgh, PA 15276 Phone: 888.283.5505 Phone: 412.494.4491 Fax: 412.294.1080 www.rescoproducts.com EZ CAST 3000 is a self-flowing, low iron, 56% alumina, low cement castable designed to provide high strength and good thermal shock and abrasion resistance. It offers good slag resistance for severe applications up to 3000 F. In the laboratory, this product has shown excellent resistance to CO atmospheres found in coke ovens and blast furnaces. Large volumes of this castable have been used successfully in a wide variety of applications. This product can be pumped. EZ CAST 3250 is a low cement castable with an alumina content of 78%. It has excellent abrasion resistance and superior hot strength to as high as 2700ºF. These properties combined with excellent thermal shock resistance have resulted in many successful installations in bottoms and lip rings of steel ladles. This proven product has been successfully used in a wide variety of applications, often substituted for higher alumina content products, making it a highly costeffective and versatile composition. Its combination of strength, toughness, alumina content, and other compositional features make it an excellent product for many applications. EZ CAST 3200 is a self-flowing, 76% alumina low cement castable designed to provide longer service life and superior performance in steel applications with temperatures up to 3200 F. It also has outstanding strength and abrasion EZ CAST 3400 is a self-flowing, 99% alumina, low cement castable for applications up to 3400 F. It has low porosity and low permeability without a sacrifice in Page 15 EZ CAST 3000 EZ CAST 3000 EZ CAST 3200 EZ CAST 3200 Self Level Vib Cast Self Level Vib Cast o F 3000 3000 3200 3200 % 5.5-6.8 4-5.5 5.5-6.5 4.0-5.0 Bulk Density lb/ft 3, 1500 o F 147 to 151 153 to 157 164 to 170 170 to 174 Cold Crushing Strength lb/in 2, 1500 o F 4000 to 8000 11000 to 15000 5000 to 9000 10000 to Modulus of Rupture lb/in 2, 1500 o F 1000 to 1600 1400 to 2200 1100 to 1500 1700 to 2200 Apparent Porosity % 13-17 10-14 15-17 11-14 %, 1500 o F -0.4 to 0-0.2 to 0.2-0.2 to 0-0.4 to 0 Al 2 O 3 56.0 56.0 76.2 76.2 SiO 2 38.4 38.4 19.2 19.2 Fe 2 O 3 1.0 1.0 0.9 0.9 TiO 2 1.8 1.8 2.1 2.1 CaO 1.3 1.3 1.2 1.2 MgO 0.0 0.4 0.0 0.0 Alkalies 1.1 1.1 0.2 0.2 resistance. In laboratory testing this product has shown excellent resistance to CO atmospheres found in coke ovens and blast furnaces. This product can be pumped. thermal shock resistance. This product is not recommended for pumping, but it can be installed with or without vibration. EZ CAST 3250 EZ CAST 3250 EZ CAST 3400 Self Level Vib Cast Self Level o F 3250 3250 3400 % 5.0-6.5 3.5-4.5 4.8-5.3 Bulk Density lb/ft 3, 1500 o F 165 to 171 169 to 173 187 to 191 Cold Crushing Strength lb/in 2, 1500 o F 6900 to 12900 15000 to 20000 2000 to 4000 Modulus of Rupture lb/in 2, 1500 o F 1300 to 2300 1900 to 2900 700 to 1100 Apparent Porosity % 15-19 11-14 --- %, 1500 o F -0.4 to 0.2-0.6 to -0.2-0.2 to 0.0 Al 2 O 3 77.7 77.7 98.7 SiO 2 18.2 18.2 tr Fe 2 O 3 0.8 0.8 tr TiO 2 1.7 1.7 tr CaO 1.2 1.2 1.1 Alkalies 0.2 0.2 0.1

Page 14 Page 3 Maximum Service Temp. KRICON 28 is a good general purpose, 45% alumina, low iron, low cement castable for service temperatures up to 2800 F. It should be installed using vibration casting methods. KRICON 30 is a low iron, 46% alumina castable with good slag resistance up to 3000 F, and is installed using vibration casting methods. KRICON 32 is a low cement 60% alumina castable that is designed for service temperatures up to 3200 F. It has low iron content with excellent hot strengths and is installed using vibration casting methods. KRICON 28 KRICON 30 KRICON 32 KRICON 32-70 KRICON 34 Vib Cast Vib Cast Vib Cast Vib Cast Vib Cast o F 2800 3000 3200 3200 3400 % 4.5-5.5 4.5-6.0 4.5-5.5 4.5-6.0 4.6-5.2 Bulk Density lb/ft 3, 1500 o F 140 to 146 143 to 150 157 to 163 170 to 174 190 to 194 Cold Crushing Strength lb/in 2, 1500 o F 4800 to 10800 6700 to 12700 4900 to 10900 8000 to 16000 6000 to 9000 Modulus of Rupture lb/in 2, 1500 o F 1500 to 2500 1100 to 2100 1700 to 2700 1400 to 2200 1500 to 1800 Apparent Porosity % 8-12 10-14 11-15 16-18 14-16 %, 1500 o F -0.6 to 0.1-0.5 to 0.1 0 to -0.1-0.3 to -0.1-0.1 to 0 Al 2 O 3 45.2 46.5 63.4 77.0 98.7 SiO 2 48.4 45.4 31.7 18.2 0.1 Fe 2 O 3 1.2 1.2 1.1 1.0 0.1 TiO 2 1.8 1.9 2.2 2.2 Tr CaO 1.4 1.2 1.2 1.2 1.0 MgO 0.3 0.3 0.2 0.2 Tr Alkalies 1.6 0.7 0.2 0.2 0.1 KRICON 32-70 is a very popular 77% alumina, low iron castable with a 3200 F temperature limit. It offers improved slag resistance and positive reheat expansion at steel making temperatures to insure tight, crack-free linings in cast ladles and tundishes. This castable should be installed using vibration casting methods. KRICON 34 is designed for service temperatures up to 3400 F. It is a high purity alumina, low cement castable featuring low porosity and low permeability while maintaining good thermal shock resistance. This mix is very pure at 99% alumina with a very low content of total impurities, and is installed using vibration casting methods. VIBROCAST 2800 is an economical 2800 o F low-cement vibratable castable designed to yield high fired strengths at maximum density with low porosity and linear change. This material will withstand high temperature corrosion and erosion. VIBROCAST 3000 is a 3000 o F low-cement vibratable castable which will give high fired strength at maximum density with minimum porosity and linear change. This material will withstand the severe high temperature corrosion and erosion that are common in today s Lime and Cement applications. VIBROCAST 50 is a 3000 o F, low-cement vibratable castable that offers excellent resistance to alkalies. This product is designed to give minimum porosity and low linear change with maximum density and high fired strengths, and can withstand severe high temperature corrosive environments. VIBROCAST 50PC is a pumpable, 3000 o F, low-cement castable that offers excellent resistance to alkalies. In addition to being pumpable, VIBROCAST 50PC requires substantially less vibration than standard low cement castables. Light vibration should be used to de -air the castable. This pumpable castable can also be shotcreted using RESCO s shotcrete activator. VIBROCAST 60 is a 60% alumina, mullite based, 3100 o F, low-cement castable which is designed to give minimum porosity and low linear change with maximum density and high fired strengths. This material will withstand severe high temperature corrosive and erosive and erosive environments and installed using vibration casting methods. VIBROCAST 60PC is a 60% alumina, mullite based, pumpable, 3100 o F low-cement castable designed to provide minimum porosity and low linear change with maximum density and high fired strengths. This material will withstand severe high temperature corrosive and erosive environments. This pumpable castable can also be shotcreted using RESCO s shotcrete activator. Vibrocast Vibrocast Vibrocast Vibrocast Vibrocast 50 Vibrocast 60 2800 3000 50PC 60PC Vib Cast Vib Cast Vib Cast Pump Cast Vib Cast Pump Cast o F 2800 3000 3000 3000 3100 3100 % 6.0-6.5 5.3-5.8 5.4-6.0 5.4-6.0 5.0-6.0 6.2-6.7 Bulk Density lb/ft 3, 1500 o F 137 143 145 148 156 160 Cold Crushing Strength lb/in 2, 1500 o F 4500 to 8000 9000 to 11000 Modulus of Rupture lb/in 2, 1500 o F --- 1200 to 1700 9000 to 11000 1200 to 1700 9000 to 11000 1200 to 1700 10000 to 14000 2000 to 2400 10000 to 14000 1400 to 2000 Apparent Porosity % 16 16 16 15 16 17 %, 1500 o F -0.3 to +0.2 --- 0 to -0.3 0 to -0.3 0.0 to -0.4-0.1 to -0.3 Al 2 O 3 40.0 48.9 45.0 45.9 60.8 60.8 SiO 2 56.1 46.9 50.9 50.0 34.5 34.5 Fe 2 O 3 0.8 0.9 0.7 0.9 1.0 1.0 TiO 2 1.2 1.6 1.1 1.4 1.8 1.8 CaO 1.7 1.5 2.0 1.5 1.6 1.6 Alkalies 0.0 0.0 0.0 0.0 0.3 0.0

Page 4 Page 13 Vibrocast 70 Vibrocast 70M Vibrocast 75 Vibrocast 85 Vibrocast 87 AS Vib Cast Vib Cast Vib Cast Vib Cast Vib Cast o F 3200 3200 3200 3200 3200 % 5.1-5.6 5.5-6.0 5.8-6.3 4.9-5.4 5.5 Bulk Density lb/ft 3, 1500 o F 164 164 168 176 180 Cold Crushing Strength lb/in 2, 1500 o F 8500 to 12500 8500 to 12500 10000 to 13000 10000 to 15000 4000 to 8000 Modulus of Rupture lb/in 2, 1500 o F 2400 to 2800 2400 to 2800 2700 to 3100 1300 to 1800 --- Apparent Porosity % 17 17 --- --- --- %, 1500 o F --- --- -0.1 to -0.4 --- -0.3 to 0.0 Al 2 O 3 71.5 70.8 79.1 83.0 87.0 SiO 2 22.5 23.4 14.4 11.3 7.5 Fe 2 O 3 1.2 1.3 1.4 1.5 1.1 TiO 2 2.8 2.6 2.9 2.4 3.4 CaO 1.6 1.5 1.5 1.6 0.8 MgO 0.0 0.0 0.0 0.0 0.1 Alkalies 0.0 0.0 0.0 0.0 0.1 VIBROCAST EZ 80 is a low cement 80% alumina castable that features improved flow characteristics during casting. This product should be installed using vibration casting methods only. VIBROCAST EZ 3250 is a 75% alumina low cement castable that is installed by vibration casting. This product has been formulated for improved service life in steel ladle applications ProCAST 80 is an 84% alumina, ultra-low cement castable. This vibration mix performs well in steel ladles, EAF deltas, and other applications requiring high strength, good thermal shock resistance, and good abrasion resistance. This product should be installed by vibration casting. PERMACON 95 is an ultra-low cement, 95% alumina castable, designed for severe service conditions at temperatures up to 3300 F. It offers superior resistance to spalling, cracking, impact, and abrasion; and greater resistance to chemical attack than low cement or conventional castables. This product should be installed by vibration casting. VIBROCAST 70 is a low-cement vibratable castable which is designed to give minimum porosity and linear change with maximum density and super high fired strengths. VIBROCAST 70M is a low-cement vibratable castable which is designed to give minimum porosity and linear change with maximum density and super high fired strengths. These materials are designed to withstand the severe high temperature corrosion and erosion in today s steel applications. VIBROCAST 75 is a high alumina, 3200 o F service limit, low cement vibratable castable used in a wide variety of applications including forging furnace floors, heat treating furnace floors, crematory furnace floors, precast burner blocks, gas fired non-ferrous melting furnaces and incineration chambers. VIBROCAST 85 is a low-cement, 85% alumina vibratable castable designed to give minimum porosity and linear change with maximum density and super high fired strengths. This material will withstand the severe high temperature corrosion and erosion that are common in today s Steel appliations. VIBROCAST 87 AS is an 87% alumina, ultra-low cement castable. This product should be installed using vibration casting methods only. This product has been used to manufacture precast shapes for steel applications, but can be used for a variety of different high temperature applications. Vibrocast EZ 80 Vibrocast EZ 3250 ProCast 80 Permacon 95 Vib Cast Vib Cast Vib Cast Vib Cast o F 3200 3250 3200 3300 % 5.0-5.5 4.5-5.0 4.0-6.0 3.0-4.0 Bulk Density lb/ft 3, 1500 o F 168 170 182-188 189-195 Cold Crushing Strength lb/in 2, 1500 o F 10000 to 13000 15,000 5800 to 6100 to 12100 Modulus of Rupture lb/in 2, 1500 o F 2700 to 3100 2,000 1100 to 2100 2100 to 3100 Apparent Porosity % --- --- 13-17 11-15 %, 1500 o F -0.4 to 0.1-0.4 to 0.0-0.4 to 0.2-0.4 to 0.3 Al 2 O 3 79.1 75.7 84.0 94.1 SiO 2 14.4 20.2 10.2 4.9 Fe 2 O 3 1.4 0.8 1.2 0.2 TiO 2 2.9 1.7 3.0 0.2 CaO 1.5 1.2 1.1 0.3 MgO 0.0 0.2 0.3 0.1 Alkalies 0.0 0.2 0.2 0.2

Page 12 Vibrocast Vibrocast Vibrocast ASC- EZ CAST 3400 KRICON 34-10 85ULM ASC-7LTPC 8LT (C-C) SP Vib Cast Vib Cast Pump Cast Vib Cast Self Level o F 3400 3200 3400 3400 3400 % 3.7-4.7 5.2-5.7 7.8-8.3 4.5-5.2 4.7-5.7 Bulk Density lb/ft 3, 1500 o F 217 to 221 171 175 185 180 to 184 Cold Crushing Strength lb/in 2, 1500 o F 9000 to 13000 6000 to 12000 1500 to 3000 5000 to 8000 5000 to 8500 Modulus of Rupture lb/in 2, 1500 o F 2000 to 2400 --- --- --- 1350 to 1800 Apparent Porosity % 8-12 --- 18 20 19-23 Spinel and Chromia Containing Castables %, 1500 o F 0 to 0.4-0.3 to 0.0 --- --- -0.2 to 0.2 Al 2 O 3 88.4 80.7 95.7 94.0 91.1 SiO 2 0.1 15.0 0.1 0.2 0.4 Fe 2 O 3 0.1 0.9 0.1 0.0 0.2 TiO 2 0.0 2.4 0.0 0.0 0.8 CaO 1.2 0.6 1.4 1.6 1.8 MgO 0.0 0.0 2.3 4.0 5.6 Cr 2 O 3 10.0 0.0 0.0 0.0 0.0 Alkalies 0.2 0.1 0.0 0.0 <0,1 KRICON 34-10 is a low cement castable with a 10% chromia content for extremely corrosive environments. The high chromia content can also offer improvement in thermal shock resistance when compared to high alumina products of similar density. VIBROCAST FS-6 is a fused silica, low cement vibratable castable. VIBROCAST FS-6 offers high strength, very good resistance to abrasion, and low reversible thermal expansion, resulting in a highly thermal shock resistant material. FS-6LC is a low cement, self-leveling, fused silica castable that offers high strength, excellent resistance to abrasion, and low reversible thermal expansion. This product may be cast or pumpcast. FS-6PC is a pumpable, low cement, fused silica castable that offers high strength, excellent resistance to abrasion, and low reversible thermal expansion. This product may be cast or pumpcast. Page 5 FURNA 3 FS is a non-wetting, fused silica-based castable for aluminum contact. It has excellent strength and low porosity with good abrasion resistance. It possesses excellent thermal shock resistance because of a very low reversible coefficient of thermal expansion. The product provides extremely good dross resistance and outstanding resistance to spalling at a reasonably low density. Jambs & Lintel Pechiney Ravenswood, WV Two 220,000 lb. round top charge melters. One 220,000 lb. tilting holding furnace. Fused Silica Castables VIBROCAST 85ULM is an ultra low cement castable designed to have maximum slag and hot metal resistance for use in LMF ladles and related steel-making applications. VIBROCAST ASC-7LTPC is a high purity, low-cement, alumina-spinel castable designed to provide maximum resistance to molten steel and steelmaking slags. VIBRO- CAST ASC-7LTPC is designed for pumping or shotcreting placement in steel ladles and related steelmaking applications. VIBROCAST ASC-8LT(C-C) is a high purity, low-cement, alumina-spinel castable designed to provide maximum resistance to molten steel and steelmaking slags. VIBROCAST ASC-8LT(C-C) is designed for production of cast shapes or monolithic placement in steel ladles and related steelmaking environments and should be installed by vibration casting. EZ CAST 3400-SP is a tabular alumina-based castable containing magnesium aluminate spinel. This self-flowing product is a good alternative to chromia-containing materials where slag and corrosion resistance are essential. This product is not recommended for pumping. Vibrocast FS-6 EZ 3 FS-6LC EZ 3 FS-6PC FURNA 3 FS FURNA 3 FS Vib Cast Vib Cast Pump Cast Self Level Vib Cast o F 2000 2000 2000 2200 2200 % 5.9-6.5 6.3-7.0 6.0-6.5 7.8-8.8 6.8-7.8 Bulk Density lb/ft 3, 1500 o F 131 136 130 to 134 118 to 122 122 to 126 Cold Crushing Strength lb/in 2, 1500 o F 7000 to 10000 8000 to 11000 8000 to 11000 4000 to 7000 7000 to 10000 Modulus of Rupture lb/in 2, 1500 o F 1300 to 1700 1300 to 1700 1300 to 1700 1000 to 1600 1200 to 1600 Apparent Porosity % 17 13 13 12-14 9-11 %, 1500 o F 0 to -0.3 0 to -0.2 0 to -0.3-0.4 to 0-0.4 to 0 Al 2 O 3 20.2 28.5 22.5 11.0 11.0 SiO 2 77.5 69.3 74.9 87.8 87.8 Fe 2 O 3 0.4 0.1 0.3 tr tr TiO 2 0.4 0.1 0.3 tr tr CaO 1.6 1.8 1.7 1.1 1.1 MgO 0.0 Tr 0.1 0.0 0.0 Alkalies 0.0 0.2 0.2 0.1 0.1

Page 6 Aluminum Contact Castables Silicon Carbide Containing Castables Page 11 FURNACON 3000 is a high purity alumina low cement castable designed for installation at or above the dross line of aluminum-melting furnaces. It will resist molten aluminum penetration and reaction after exposure to temperatures as high as 3000 F, such as occur with thermiting of magnesium containing drosses or overheating of the sidewalls. FURNACON 50W is designed as a low cost refractory to resist mild alloys. It is cost-effective in metal contact areas and where salt fluxes are used. FURNACON 50W is available only in a winterized version for faster setting at lower temperatures. FURNACON 70 resists the most aggressive alloys, especially magnesium-containing aluminum alloys. It is a cost-effective refractory for severe operating conditions. In addition to its non-wetting properties, it has exceptional strength and toughness to resist thermal and mechanical abuse. It is one of the most widely used castables for lower sidewalls and aluminium furnace hearths. A winterized version, FURNACON 70W, is available for fast-setting at low temperatures. FURNACON 95 resists spalling and cracking from thermal and mechanical abuse. Its high purity, high alumina base makes it ideally suited for troughs and tapholes. FURNA 3 70 is a 74% alumina, non-wetting to aluminum, low cement castable that can be vibration cast, self-flow FURNACON FURNACON FURNACON FURNACON FURNACON 70 3000 50 W 70 W 95 Vib Cast Vib Cast Vib Cast Vib Cast Vib Cast o F 3100 2800 3000 3000 3200 % 4-4.8 4.5-6.0 4.0-5.5 4.0-5.5 4.0-5.5 Bulk Density lb/ft 3, 1500 o F 197 to 201 143 to 146 167 to 173 167 to 172 189 to 194 Cold Crushing Strength lb/in 2, 1500 o F 5500 to 9500 7000 to 11000 11000 to 17000 12000 to 16000 15000 to 19000 Modulus of Rupture lb/in 2, 1500 o F 1750 to 2150 1500 to 1900 2800 to 3800 2700 to 3900 4000 to 4500 Apparent Porosity % --- 7-13 11-15 10-13 10-13 %, 1500 o F -0.1 to 0.0 0 to -0.4-0.4 to +0.2-0.2 to +0.2-0.3 to -0.1 Al 2 O 3 92.8 45.6 72.4 70.9 93.8 SiO 2 0.1 47.8 21.6 23.2 5.0 Fe 2 O 3 Tr 1.3 1.0 1.1 Tr TiO 2 Tr 1.8 2.1 2.1 Tr CaO 1.1 1.5 2.5 2.5 1.1 MgO Tr 0.3 0.2 0.1 Tr Alkalies 0.1 1.8 0.2 0.1 0.1 cast, or shotcreted. This product has excellent thermal shock resistance to 2000ºF. It has been used for preformed blocks in an aluminum furnace and has been shotcreted in aluminum furnace upper and lower walls. Unlike other FURNA 3 products, this product is recommended for use only in aluminum furnace applications. Therefore, its maximum non-metal contact use temperature is 2500ºF. FURNA 3 75 is a self-flowing, 76% alumina castable designed for non-wetting applications up to 2200 F. It can be used for other applications up to 3000 F where increased strength and abrasion resistance are needed. FURNA 3 65 is a self-flowing, 64% alumina castable designed for non-wetting applications up to 2200 F. It can be used for other applications up to 3000 F where increased strength and abrasion resistance are needed. FURNA 3 85 is an 85% alumina, non-wetting to aluminum, low cement castable designed to replace 85% alumina brick in aluminum furnaces. This product has exceptional strength and abrasion resistance particularly at 1500 F. It is also very strong and thermal shock resistant at 1500ºF. It can be placed by vibration casting, self-flow casting, or shotcreting. Its high strength and toughness after shotcreting are ideal for aluminum furnace maintenance gunning or as an easy-to-install initial working lining. VIBROCAST 80SC is an 80% SiC castable that uses low cement binder technology. Its low porosity, excellent abrasion resistance and high heat transfer value make this product an excellent choice for the tube walls in the combustion zones of power generating units. The high heat transfer characteristic of the SiC reduces surface slagging and alkali build-up, thereby improving the operating efficiency of your unit. VIBROCAST 80SC is best applied by vibration casting. VIBROCAST 80SCHP is an 80% SiC refractory material that uses low cement binder technology. Its low porosity, excellent abrasion resistance and high heat transfer value make this product an excellent choice for the tube walls in the combustion zones of power generating units. The high heat transfer characteristic of the SiC reduces surface slagging and alkali build-up, thereby improving the operating efficiency of your unit. VIBROCAST 80SCHP is best applied by hand packing. 80-15 is a corrosion resistant 75% alumina castable, nominally containing 17% silicon carbide, that can be poured as a self-leveling mix, pumped, shotcreted, or vibrated. It is an ultra-low cement mix developing excellent green and dry strengths. It offers high hot strength and excellent thermal shock resistance. Vibrocast 80SC Vibrocast 80SCHP EZ 3 80-15 EZ 3 80-15 EZ 3 80-15 Vib Cast Hand Pack Self Level Shotcrete Vib Cast o F 2800 2800 3100 3100 3100 % 4.5-5.1 5.9-6.3 5.5-6.0 4.5-5.0 3.5-4.5 Bulk Density lb/ft 3, 1500 o F 155 to 160 160 to 165 178 to 182 182 to 186 182 to 186 Cold Crushing Strength lb/in 2, 1500 o F 10000 to 15000 14000 to 18000 6000 to 10000 8000 to 13000 12000 to 17000 Modulus of Rupture lb/in 2, 1500 o F 2300 to 3300 5000 to 6000 1500 to 2000 20000 to 2500 2500 to 3000 Apparent Porosity % --- --- 15-19 14-18 13-17 %, 1500 o F -0.1 to -0.4-0.1 to -0.3-0.3 to 0.1-0.3 to 0.1-0.3 to 0.1 Al 2 O 3 8.7 11.3 75.5 75.5 75.5 SiO 2 9.2 7.5 5.0 5.0 5.0 Fe 2 O 3 0.2 0.1 0.3 0.3 0.3 TiO 2 tr 0.0 1.5 1.5 1.5 CaO 2.0 1.7 1.2 1.2 1.2 SiC 79.8 79.2 16.3 16.3 16.3 MgO 0.0 0.1 0.7 0.7 0.7 Alkalies 0.0 0.1 0.1 0.1 0.1

Page 10 EZ 3 20-60 EZ 3 20-60 EZ 3 20-60 Vibrocast 56SC Vibrocast 56SCHP Self Level Shotcrete Vib Cast Vib Cast Hand Pack o F 3000 3000 3000 2700 2700 % 5.5-6.5 4.8-5.8 4.0-5.5 4.5-5.0 5.8-6.1 Bulk Density lb/ft 3, 1500 o F 156 to 162 156 to 159 161 to 167 157 to 162 157 to 162 Cold Crushing Strength lb/in 2, 1500 o F 5400 to 11400 11500 to 13500 9800 to 15800 10000 to 15000 10000 to 15000 Modulus of Rupture lb/in 2, 1500 o F 600 to 1600 800 to 1500 1100 to 2100 2500 to 3500 2500 to 3500 Apparent Porosity % 15-19 15-17 11-15 17 17 Silicon Carbide Containing Castables %, 1500 o F -0.3 to 0.3-0.1 to 0-0.3 to 0.3-0.1 to -0.4-0.1 to -0.4 Al 2 O 3 22.3 22.3 22.3 19.8 19.8 SiO 2 14.9 14.9 14.9 21.5 21.5 Fe 2 O 3 0.5 0.5 0.5 0.3 0.3 TiO 2 0.4 0.4 0.4 0.3 0.3 CaO 1.4 1.4 1.4 1.7 1.7 SiC 60.3 60.3 60.3 56.2 56.2 Alkalies 0.1 0.1 0.1 0.0 0.0 20-60 is a self-flow, pumpable, shotcretable mix that has excellent corrosion resistance and contains 60% silicon carbide. It has developed into a premium product to resist alkali buildup in cement kiln preheaters and coolers. Its great ability for adherence has made 20-60 the mix of choice when shotcreting overhead is necessary. Page 7 FURNA 3 70 FURNA 3 70 FURNA 3 75 FURNA 3 75 FURNA 3 75 Self Level Pump/Shotcrete Self Level Pump/Shotcrete Vib Cast o F 2500 2500 3000 3000 3000 % 5-6 4-5 5.5-6.5 5-6 4.5-5.5 Bulk Density lb/ft 3, 1500 o F 166 to 170 155 to 161 168 to 172 158 to 161 169 to 174 Cold Crushing Strength lb/in 2, 1500 o F 5500 to 10000 3000 to 7000 5000 to 9000 6000 to 9000 10000 to 16000 Modulus of Rupture lb/in 2, 1500 o F 1100 to 2800 700 to 900 1100 to 1500 1200 to 1500 1700 to 2200 Apparent Porosity % 15-18 18-22 15-17 18-20 11-14 %, 1500 o F -0.4 to 0.2-0.4 to 0.2-0.5 to 0.0-0.3 to -0.1-0.4 to 0.0 Aluminum Contact Castables Al 2 O 3 74.0 74.0 75.6 75.6 75.6 SiO 2 17.6 17.6 18.3 18.3 18.3 Fe 2 O 3 0.9 0.9 1.1 1.1 1.1 TiO 2 2.0 2.0 2.3 2.3 2.3 CaO 1.2 1.2 2.5 2.5 2.5 SiC 0.0 0.0 0.0 0.0 0.0 MgO 0.0 0.0 0.0 0.0 0.0 Cr 2 O 3 0.0 0.0 0.0 0.0 0.0 ZrO 2 0.0 0.0 0.0 0.0 0.0 Alkalies 0.2 0.2 0.1 0.1 0.1 VIBROCAST 56SC is a 56% SiC castable that uses low cement binder technology. Its low porosity, excellent abrasion resistance and high heat transfer value make this product an excellent choice for the combustion zones of POWER GENERA- TION units and for the riser lines and preheater sections of CEMENT PLANTS. The high heat transfer characteristic of the SiC reduces surface slagging and alkali build-up, thereby, improving the operating efficiency of your unit. VIBROCAST 56SC is best applied by vibration casting. VIBROCAST 56SCHP is a 56% SiC castable that uses low cement binder technology. Its low porosity, excellent abrasion resistance and high heat transfer value make this product an excellent choice for the combustion zones of POWER GENERATION units and for the riser lines and preheater sections of CEMENT PLANTS. The high heat transfer characteristic of the SiC reduces surface slagging and alkali build-up, thereby, improving the operating efficiency of your unit. Vibrocast 56SCHP is best applied by hand packing. FURNA 3 65 FURNA 3 85 FURNA 3 85 FURNA 3 85 Vib Cast Self Level Pump/Shotcrete Vib Cast o F 3000 2800 2800 2800 % 5-6.5 4.5-5.5 4.0-5.0 4.0-5.0 Bulk Density lb/ft 3, 1500 o F 170 176 to 182 176 to 182 180 to 185 Cold Crushing Strength lb/in 2, 1500 o F 16,790 23500 to 29500 12000 to 19000 27000 to 33000 Modulus of Rupture lb/in 2, 1500 o F 2500 to 3500 4600 to 6000 2950 to 3950 4200 to 6200 Apparent Porosity % --- 15-19 14-18 10-14 %, 1500 o F 0.0 to +0.5-0.4 to 0.2-0.9 to -0.2-0.5 to 0.1 Al 2 O 3 64.3 83.5 83.5 83.5 SiO 2 24.6 9.6 9.6 9.6 Fe 2 O 3 1.0 0.8 0.8 0.8 TiO 2 1.8 2.1 2.1 2.1 CaO 2.0 2.8 2.8 2.8 MgO 0.0 0.0 0.0 0.0 Alkalies 0.3 0.3 0.3 0.3

Page 8 EZ 3 34ZLC is a 2910 o F Zircon based low cement castable which requires no vibration to install. Super high strengths and abrasion resistance are achieved even when the material is mixed to a Free Flowing or Self-Leveling consistency. 3000 is a self-flowing, low iron, 56% alumina, low cement castable designed to provide high strength, and good thermal shock and abrasion resistance. It offers good slag resistance for severe applications up to 3000 F. In the laboratory, this product has tested well for resistance to CO (carbon monoxide) disintergration encountered in coke ovens and blast furnaces. This product can be vibrated, pumped, or shotcreted. 3200 is a shotcretable or selfflowing, low iron, 76% alumina, low cement castable designed to provide longer service life and superior performance in steel applications with temperatures up to 3200 F. It also has outstanding strength and abrasion resistance. In laboratory testing this product has shown excellent resistance to CO atmospheres found in coke ovens and blast furnaces. 3200 Fine is a slightly finer grain size version of 3200. It can be used in the same applications, and it is recommended when pumping for long distances, particularly long vertical runs. 60 LQY is an alkali-resistant 60% alumina castable that can be installed using vibration casting, pumping, or wet shotcreting methods. This product has been formulated to be resistant to alkali attack. 60-M is a mullite-based 60% alumina castable that can be pumped, vibrated, or shotcreted. It is recommended for applications requiring thermal shock resistance, wear resistance, and good refractoriness. 85 is an 85% alumina, low cement castable that exhibits superior physical properties when vibrated, poured, or shotcreted. The excellent thermal shock, corrosion, and abrasion resistance attributes combined with other excellent physical properties make this a premium product. Normally, very high alumina containing products are more difficult to shotcrete due to higher rebounds. 85 is remarkably easy to shotcrete and adheres well at low water levels yielding superior physical properties. 70PC is a pumpable, low-cement castable which is designed to give minimum porosity and linear change with maximum density and super h igh fired strengths. 75PC is a pumpable, low-cement castable which is designed to give minimum porosity and linear change with maximum density and super h igh fired strengths. This material will withstand severe high temperature corrosion and erosion. 80PC is a pumpable, low-cement, 80% alumina, vibratable castable designed to give minimum porosity and linear change with maximum den sity and super high fired strengths. This material will withstand the severe high temperature corrosion and erosion that are common in today s Steel Industry. AZS is a low cement castable, that contains an alumina-zirconia-silica (AZS) aggregate, that can be vibration cast, pumped, and shotcreted. This product was formulated specifically for cement preheater tower applications that require an abrasion-resistant monolithic refractory that resists dust build up. EZ 3 34ZLC EZ 3 3000 EZ 3 3000 EZ 3 3000 EZ 3 3200 EZ 3 3200 EZ 3 3200 EZ 3 3200 Fine EZ 3 3200 Fine EZ 3 3200 Fine EZ 3 60 LQY Self Level Self Level Shotcrete Vib Cast Self Level Shotcrete Vib Cast Self Level Shotcrete Vib Cast Vib Cast o F 2910 3000 3000 3000 3200 3200 3200 3200 3200 3200 3100 % 4.3-4.8 6.5-7.0 5.5-6.0 4.8-6.8 5.5-6.5 5.0-6.0 4.7-5.5 5.5-6.5 5.0-6.0 4.5-5.5 5.7 Bulk Density lb/ft 3, 1500 o F 170 150 to 151 151 to 155 153 to 157 164 to 170 152 to 151 170 to 174 164 to 170 152 to 157 170 to 174 157 Cold Crushing Strength lb/in 2, 1500 o F 11000 to 16000 5200 to 11200 6000 to 12000 12000 to 16000 5000 to 9000 3700 to 8200 10000 to 16000 5000 to 9000 3700 to 8200 10000 to 16000 11,050 Modulus of Rupture lb/in 2, 1500 o F to 800 to 1800 800 to 1800 1500 to 2300 1100 to 1500 500 to 1500 1700 to 2200 1100 to 1500 500 to 1500 1700 to 2200 4,510 Apparent Porosity % 15 15-19 15-19 10-14 15-17 20-24 11-14 15-17 20-24 11-14 --- %, 1500 o F 0 to -0.3-0.6 to 0-0.2 to 0-0.2 to 0.2-0.2 to 0-0.3 to 0-0.4 to 0-0.2 to 0-0.3 to 0-0.4 to 0-0.3 Al 2 O 3 34.0 56.6 56.6 56.6 76.8 76.8 76.8 75.9 75.9 75.9 55.0 SiO 2 41.5 36.1 36.1 36.1 18.5 18.5 18.5 19.2 19.2 19.2 40.6 Fe 2 O 3 0.5 1.9 1.9 1.9 1.1 1.1 1.1 0.9 0.9 0.9 1.0 TiO 2 0.8 2.2 2.2 2.2 2.3 2.3 2.3 2.1 2.1 2.1 1.7 CaO 1.4 1.3 1.3 1.3 1.1 1.1 1.1 1.5 1.5 1.5 1.5 ZrO 2 21.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Alkalies 0.3 0.8 0.8 0.8 0.1 0.1 0.1 0.1 0.1 0.1 0.2 EZ 3 60-M EZ 3 60-M EZ 3 60-M EZ 3 85 EZ 3 85 EZ 3 85 EZ 3 70PC EZ 3 75PC EZ 3 80PC EZ 3 AZS EZ 3 AZS Self Level Shotcrete Vib Cast Self Level Shotcrete Vib Cast Pump Cast Pump Cast Pump Cast Self Level Vib Cast o F 3100 3100 3100 3250 3250 3250 3200 3200 3200 2800 2800 % 5.75-6.75 4.75-5.75 4-5 4.5-5.5 4.0-5.0 4.5-5.0 5.8-6.5 5.4-5.9 6.1-6.5 5.3 5.1 Bulk Density lb/ft 3, 1500 o F 152 to 157 153 to 158 158 to 163 178 to 184 176 to 182 181 to 187 160 170 167 180 180 Cold Crushing Strength lb/in 2, 1500 o 11000 to 19000 to 11000 to 14500 to F 7500 to 13500 17000 25000 12500 to 16500 17000 18500 10000 to 14000 9000 to 12000 9000 to 13000 12,500 12,500 Modulus of Rupture lb/in 2, 1500 o F 1750 to 2750 2250 to 3250 3500 to 4500 2700 to 3200 2200 to 3200 3200 to 3800 1300 to 1700 1200 to 1700 1300 to 1800 --- --- Apparent Porosity % 15-19 13-17 10-14 15-19 14-18 12-16 17 18 --- --- --- %, 1500 o F -0.5 to 0.1-0.3 to 0.3-0.7 to -0.1-0.1 to 0.1-0.2 to 0.4-0.1 to 0.1-0.1 to -0.3 0 to -0.3 0.0 to -0.3-0.2-0.2 Self-flowing, Pumpable. Shotcretable Castables Al 2 O 3 63.3 63.3 63.3 85.5 85.5 85.5 69.4 77.6 79.2 52.7 52.7 SiO 2 32.3 32.3 32.3 9.8 9.8 9.8 25.7 16.2 15.4 19.5 19.5 Fe 2 O 3 0.9 0.9 0.9 0.8 0.8 0.8 1.1 1.4 1.1 0.2 0.2 TiO 2 1.7 1.7 1.7 2.2 2.2 2.2 1.9 2.6 2.3 0.3 0.3 CaO 1.5 1.5 1.5 1.2 1.2 1.2 1.5 1.5 1.5 1.5 1.5 SiC 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4.9 4.9 MgO 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.0 0.2 0.2 ZrO 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 20.5 20.5 Alkalies 0.2 0.2 0.2 0.4 0.4 0.4 0.0 0.5 0.5 0.2 0.2 Page 9