Name | |
Sapphire | |
Density [g/cm3] | 3.98 |
Young's modulus /Gpa | 320~340 |
Shear modulus /Gpa | 148.1 |
Thermal conductivity W/mk | 42 |
Thermal expansion coefficient k(-1) | 6.9x 10^-6 /℃ |
Transition temperature ℃ | 1600℃-1900℃ |
Sapphire (Al2O3) is an excellent multifunctional material. It has high temperature resistance, good thermal conductivity, high hardness, infrared transmission, and good chemical stability. It is widely used in many fields of industry, national defense and scientific research (e.g., high temperature resistant infrared windows, etc.).