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Black silicon carbide is black colour ,is used for grinding cast iron ,leaterh ,rubber ,wood ,rock ,it also be used as high grade refractory material.;Our silicon carbide abrasive grains are manufactured according to :
(1) FEPA – specifications for bonded F8-F2000
(2) FEPA—specifications for coated P 12-P2500
(3) JIS abrasive grain size :# 8--# 8000

Chemical composition(%)
(GB/T2480-1996)

Grit	SiC	F.C.	Fe2O3
F12~F90	? 98.50	< 0.20	? 0.60
F100~F150	? 98.00	< 0.30	? 0.80
F180~F220	? 97.00	< 0.30	? 1.20
F230~F400	? 96.00	< 0.40	? 1.20
F500~F800	? 95.00	< 0.40	? 1.20
F1000~F1200	? 93.00	< 0.50	? 1.20
P12~P90	? 98.50	< 0.20	? 0.60
P100~P150	? 98.00	< 0.30	? 0.80
P180~P220	? 97.00	< 0.360	? 1.20
P230~P500	? 96.00	< 0.40	? 1.20
P600~P1500	? 95.00	< 0.40	? 1.20
P2000~P2500	? 93.00	< 0.50	? 1.20

Note:Special requirments on chemical compositions can be satisfied through discussion .