Document bBgqKeO7YynZpGOraNY7DDZzZ

INSULATING FIRE BRICK Specification Data Temperature Limit JM-3000 JM-28 JM-26 JM-23 3000F** 2800F** 2600F** 2300F** Approximate Density 65 pcf 58 pcf 51 pcf 31 pcf Transverse Strength 200 psi 175 psi 140 psi 140 psi Cold Crushing Strength 400 psi 300 psi 210 psi 210 psi Linear Shrinkage t0.8% at 1.4% at 1.0% at 0.1% 3000F 2800F 2600F at 2300F Reversible Thermal 0.65-0.75% 0.65-0.75% 0.65-0.75% 0.50.6% Expansion at 2000F at 2000F at 2000F at 2000F JM-20 20Q0F** 29 pcf 100 psi 150 psi 0.0% at 2000F 0.50.6% at 2000F JM-1620 2000F*** 1600F** 27 pcf 80 psi 95 psi 0.0% at 2000F 0.50.6% at 2000F 'The figures given In this table are average values obtained In accordance with accepted test methods. "Back-up or exposed. '"Back-up only. t24-hr Simulative Service Panel Test; all others 24-hr soaking period. Tvnfi JM-3000 JM-28 JM-26 JM-23 JM-20 JM-1620 N.nf Brick per Carton 20 20 25 25 25 25 JM-20 complies with ;MIL-B-16305 A, class A JM-28 complies with MIL-B-16305 A, class B STANDARD SIZES Type JM-3000 JM-28 JM-26 JM-23 JM-20 JM-1620 Size Accurately sized in alt standard 9 in. shapes of the 2V4 and 3 in. series, as well as special shapes. MEAN TEMPERATURE, F 500 1000 1500 2000 JM-3000 3.22 3.30 327 3.46 JM-28 JM-26 255 250 3.06 322 222 2.44 2.68 2.93 JM-23 1.01 1.18 124 120 JM-20 0.95 1.18 127 127 JM-1620 0.90 1.07 1.27 - conductivity: BTU in. PER SQ FT PER F PER HR ET-000084 An Insulation for Everv Cbmmemiai anrt / D..-- rr*JOH M 5-KA.KVtLLt 51