\n| Material<\/td>\n | Alumina<\/p>\n (Al\u2082O\u2083)<\/td>\n | Zirconia<\/p>\n (ZrO2<\/sub>)<\/td>\n| Silicon Nitride<\/p>\n (Si3<\/sub>N4<\/sub>)<\/td>\n| Aluminum Nitride<\/p>\n (AlN)<\/td>\n | Silicon Carbide<\/p>\n (SiC)<\/td>\n | Boron<\/p>\n Nitride(BN)<\/td>\n<\/tr>\n | \n| Density<\/p>\n (g\/cm3<\/sup>)<\/td>\n| 3.85\u00a0– 3.92<\/td>\n | 5.98 – 6.08<\/td>\n | 3.20 – 3.26<\/td>\n | 3.26 – 3.33<\/td>\n | 3.10 – 3.22<\/td>\n | 2.00 – 2.30<\/td>\n<\/tr>\n | \n| Vickers Hardness<\/p>\n (HV)<\/td>\n | 1400 – 1800<\/td>\n | 1050 – 1350<\/td>\n | 1490 – 1550<\/td>\n | 1100 -1200<\/td>\n | 2800<\/td>\n | 30-50<\/td>\n<\/tr>\n | \n| Flexural Strength<\/p>\n (MPa)<\/td>\n | 27\u00a0– 33<\/td>\n | 800 – 1500<\/td>\n | 600 – 1200<\/td>\n | 300 – 400<\/td>\n | 350 – 500<\/td>\n | 20 – 60<\/td>\n<\/tr>\n | \n| Fracture Toughness<\/p>\n (MPa\u00b7m1\/2<\/sup>)<\/td>\n| 330\u00a0– 500<\/td>\n | 6.0 – 12.5<\/td>\n | 5.0 – 8.0<\/td>\n | ~3.0<\/td>\n | 4.0 – 5.35<\/td>\n | –<\/td>\n<\/tr>\n | \n| Elastic Modulus<\/p>\n (GPa)<\/td>\n | 2000\u00a0– 2950<\/td>\n | 200 – 220<\/td>\n | 290 – 320<\/td>\n | 300 – 320<\/td>\n | 400 – 420<\/td>\n | –<\/td>\n<\/tr>\n | \n| Thermal Conductivity<\/p>\n (W\/m\u00b7K)<\/td>\n | 4\u00a0– 5<\/td>\n | 2.0 – 3.0<\/td>\n | 15 – 130<\/td>\n | 90 – 230<\/td>\n | 25 – 150<\/td>\n | 33 – 50<\/td>\n<\/tr>\n | \n| Coefficient of Thermal Expansion<\/p>\n (10-6<\/sup>\/K)<\/td>\n| 1650\u00a0– 1750<\/td>\n | 9.6 – 11.2<\/td>\n | 2.6 – 3.6<\/td>\n | 4.0 – 4.6<\/td>\n | 4.0 – 5.2<\/td>\n | 1.5 – 2.0<\/td>\n<\/tr>\n | \n| Maximum Service Temperature<\/p>\n (\u2103)<\/td>\n | 7.6\u00a0– 8.2<\/td>\n | 750 – 1000<\/td>\n | 1000 – 1300<\/td>\n | 1700<\/td>\n | 1400 – 1700<\/td>\n | 900 (in air)
\n2200 (inert)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nCompare materials.<\/b><\/strong>\u00a0Use the table above or the information you received\u00a0to evaluate each ceramic against your priority list.<\/p>\nConsider total cost of ownership.<\/b><\/strong>\u00a0Don\u2019t just look at the initial material price. Pay more attention to\u00a0long-term value. A more expensive ceramic may last longer and reduce maintenance costs.<\/p>\nCheck industry standards and specifications.<\/b><\/strong>\u00a0Ensure the material meets your industry\u2019s regulatory requirements. This is especially important for industries like aerospace, defense, or medical devices.<\/p>\n | | | | | |