Silicon carbide BW+ (black)

Silicon Carbide is a hard material with sharp edges. It is produced from sands and coal in electric furnaces at 2400° C. The high porosity is achieved by adding wood shavings while heating. Large lumps of material taken out of the furnace are crushed, milled and classified.

Two techniques for grading are used:

Grading by means of vibratory sifter = MACRO GRAIN
Grading by means of sedimentation = MICRO GRAIN

A follow-up chemical treatment grants the product's high purity.

SILICON CARBIDE BW plus is particularly used for lapping of ceramics, for polishing in the glass and optical industry as well as in granite processing.

Types and Grains available

SILICON CARBIDE is available in 2 different grades: black and green. Our SILICON CARBIDE is produced in accordance with F.E.P.A. standards (Féderation Européenne des Fabricants de Produits Abrasifs). Strict quality control of each batch produced certifies the conformity with those standards. The following grains are available:

Mikro FEPA 42-2:2006	50% Value	Tolerance	94% Value	3% Value
F 230	53.0	± 3.0	34.0	82
F 240	44.5	± 2.0	28	70
F 280	36.5	± 1.5	22	59
F 320	29.2	± 1.5	16.5	49
F 360	22.8	± 1.5	12	40
F 400	17.3	± 1.5	8	32
F 500	12.8	± 1.0	5	25
F 600	9.3	± 1.0	3	19
F 800	6.5	± 1.0	2	14
F 1000	4.5	± 0.8	1	10
F 1200	3.0	± 0.5	1	7

Chemical Structure

Type:	SILICON CARBIDE
Colour:	black
Hardness:	2300-3000 (Knoop100)
Specific gravity	3,20 g / ccm
Crystal structure	αSiC hexagonal and rhombohedral
Shape of grains:	block-like, sharp-edged

SiC: 98.60%
SiO2: 0.25%
Si: 0.15%
Fe2O3: 0.05%
Free C: 0.15%