... , chemical and optical properties, which make it resistant to high temperature, thermal shock, water and sand erosion, ... applications from 3µm to 5µm. C-plane sapphire substrates are widely used to grow III-V and ... Material:sapphire (α-Al2O3≥99.99%)4.Crystal orientation:C,A,R5.Surface Roughness:Rz0.016.S/D: ... devices, if any other needs, please feel free to contact with us. We will supply our best ...