Item Category | JT23 | JT26 | JT28 | JT30 | JT32 | ||
(℃)Using temperature | 1300 | 1430 | 1520 | 1550 | 1600 | ||
(g/cm3)Density | 0.55-0.65 | 0.8 | 0.9 | 1.0 | 1.1 | ||
(%)Reheating linear shrinkage | 0.4 | 0.5 | 0.8 | 0.8 | 1.0 | ||
(Mpa)Cold crushing strength | 1.8 | 1.8 | 2.5 | 2.8 | 3.5 | ||
(Mpa)Room temperature flexural strength | 1.2 | 1.2 | 1.6 | 1.6 | 2.2 | ||
(350℃ W/mk)Thermal Conductivity | 0.25 | 0.26 | 0.32 | 0.37 | 0.42 | ||
(×10-6/℃)Thermal expansion coefficient | 0.47 | 0.47 | 0.48 | 0.48 | 0.49 | ||
Al2O3 | 45 | 54 | 64 | 72 | 80 | ||
Fe2O3 | 0.9 | 0.9 | 0.8 | 0.7 | 0.5 |