Silicon Carbide – Black

Grains and Powders

Silicon Carbide-Black is ideally used for a wide range of applications. These include vitrified and resinoid grinding wheels, friction, blasting, compounds, lapping, polishing, non-slip, wire sawing silicon and quartz and many more uses.

Bayville’s Silicon Carbide-Black powder contains some free silicon (Si) and carbon (C) and is not as pure as green SiC. Black Silicon Carbide is an extremely hard (Mohs 9.1 / Knoop 2550) man-made mineral that possesses high thermal conductivity and high strength at elevated temperatures. At 1000^oC Black Silicon Carbide is 7.5 times stronger than Alumina. Silicon Carbide-Black has a modulus of elasticity of 410 GPa, with no decrease in strength up to 1600^oC. It does not melt at normal pressures but instead dissociates at 2600^oC.

Properties:

Formula                         SiC

CAS#                             409-21-2

Color                              Black

Particle Shape              Blocky or Angular with sharp edges

Hardness                       Mohs: 9.1, Knoop: 2550

Melting Point                Sublimes at 2600^oC (4712^oF)

Typical Analysis:

SiC          97.7%

SiO₂          0.7%

Si              0.8%

Fe             0.2%

Al              0.3%

C               0.3%

Safety Data Sheet (pdf)