Products | ELECTROCARB® Black Silicon Carbide Grain

Electro Abrasives manufactures Electrocarb® Black Silicon Carbide to the finest powder, in custom sizes, to meet all our customers needs. It is manufactured by a team of professionals dedicated to provide our customers the best in quality, service, and support.

What is Electrocarb® Black Silicon Carbide

Electrocarb Black Silicon Carbide (SiC) is an extremely hard (Mohs 9.1 or 2550 Knoop) man made mineral that possesses high thermal conductivity (100 W/m-K). It also has 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.

Electrocarb SiC contains some free silicon and carbon and is not as pure as green SiC. A common use of Electrocarb SiC is in abrasive wheels or refractories. It is manufactured in many complex bonded shapes, which are utilized for super-refractory purposes. Electrocarb SiC is also ideal for a wide variety of applications.

APPLICATIONS

Aerospace
Blasting
Composites
Compounds
Kiln Furniture
Lapping
Non-Slip
Polishing
Refractories
Sawing Silicon, Quartz
Vitrified and Resinoid Grinding Wheels

PROPERTIES

Atomic Properties
Crystalline Structure	Hexagonal
Molecular Weight	40.07 gm/mole
Heat of Formation ΔHf°	-26.7 kcal/mol
Refractive Index	2.654
Specific Gravity	3.22 gm/cc
Specific Heat	0.7 J/gm°C
Color	Clear, Straw, Green, Blue-Black
Mechanical Properties
Knoop Hardness (100 gm load)	2580
Mohs Hardness	9.1+
Bending Strength	350..450 GPa
Compressive Strength	1035..1725 GPa
Young's Modulus	410 GPa
Weibull Modulus	1 u
Poisson's Ratio	0.16
Thermal & Electrical Properties
Melting Point	2600°C sublimes
Boiling Point	2815°C dissociates
Thermal Expansion	4.3 µm/°C (25-1500°C)
Thermal Conductivity 25°	100 W/mk
Electrical Conductivity°	0.1 Ω-cm (porous body) 2.1-0.4 (single crystal)
Typical Chemical Analysis
Alpha silicon carbide which crystallizes as modifications of the hexagonal system.
SiC	98.5%
SiO2	0.5%
Si	0.3%
Fe	0.08%
Al	0.1%
C	0.3%
BALL MILL TOUGHNESS:	On crude SiC, 55 minimum. Finished product is much higher but not tested on a routine basis.
Particle Shape:	Blocky, Sharp.

AVAILABLE SIZES

ANSI/ISO Grits:	#8, 10, 12, 14, 16, 20, 22, 24, 30, 36, 46, 54, 60, 70, 80, 90, 100, 120, 150, 180, 220, 240, 280, 3F-Fine. Also FEPA/ISO in above sizes.
FEPA-F Grits (Water Classified):	F320, 360, 400, 500, 600, 800, 1000, 1200, 1200 and finer, 2.5 micron, 0.7 micron. 1F, 2F, 3F, 4F, 800/F, 800/1000.
#1 Refractory & Abrasive Splits:	(Suitable for bonded abrasives, refractories, etc.) 4/10, 4/8, 6/8, 8/16, 10/16, 16/35, 30/50, 50/100, 35/70, 100F, and custom sizes. Lapidary splits 46/70, 60/90, 100/120, 120/220
#1 Refractory:	run-of-mill 6/F, 8F, etc. plus above splits (low Fe₂O₃ (Typ. 0.1) Dust Collector Fines CR, CT, CTC Fines, 270/F Washed.

AVAILABILITY

ELECTROCARB optical quality virgin silicon carbide powders are available in 300 lb fiber drums, one-ton supersacks or 25 kg boxes. They are also available 50 pound white plastic pails at a small premium.

Electro Abrasives manufactures Electrocarb Black Silicon Carbide at our state-of-the-art, United States Headquarters in Buffalo, New York. All chemistry and sizing are controlled to meet exact customer requirements. All Electrocarb Black Silicon Carbide manufactured at Electro meets or exceeds ISO, FEPA, and JIS Standards for product quality.

The information contained in this data sheet has been determined through the application of accepted engineering practice and is believed to be reliable. Since the conditions of application and use of our products are beyond our control, no warranty is expressed or implied regarding accuracy of the information, the results to be obtained from the use of the product, or that such use will not infringe on any patent. This information is furnished with the express condition that you will make your own tests to determine the suitability of the product for your particular use.

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