Electro Abrasives, LLC. manufactures Black Silicon Carbide grains & powders in sizes to meet all of 

our customers’ needs. It is manufactured by a team of professionals dedicated to provide our 

customers the best in quality, service, and support.

TYPICAL CHEMICAL ANALYSIS 

SiC 97.7%

SiO2 0.7%

Si 0.8%

Fe 0.2%

Al 0.3%

C 0.3%

TYPICAL PHYSICAL PROPERTIES 

Hardness: Knoop: 2550

Mohs: 9.1

Melting Point: Sublimes at 4712°F (2600°C)

Particle Shape: Blocky, with sharp edges OR

Angular, with sharp edges (“P”)

Color: Black

ABOUT:

ELECTROCARB® Black Silicon Carbide (SiC) is an extremely hard (Mohs 9.1 / 2550 Knoop) man made 

mineral that possesses high thermal conductivity and high strength at elevated temperatures (at 

1000°C, SiC is 7.5 times stronger than Al2O3

). SiC has a modulus of elasticity of 410 GPa, with no 

decrease in strength up to 1600°C, and it does not melt at normal pressures but instead dissociates 

at 2600°C.

APPLICATIONS:

ELECTROCARB® Black Silicon Carbide contains some free silicon (Si) and carbon (C) and is not 

as pure as green SiC. It is ideal for a wide variety of applications including vitrified and resinoid 

grinding wheels, friction, blasting, compounds, lapping, polishing, non-slip, wiresawing silicon & 

quartz, and many more.