Black Fused Alumina

Black Fused Alumina has good features as high hardness, strong tenacity, better bonding ability and hydrophilicity, giving less heat, good self-sharpening, smooth surface and high finish. It's suitable for polishing various spare parts such as:bicycles,sewing-machine, hard metal tools, medical apparatus, timepieces, glass products and stone grinding.It's also the right material for making abrasive tools: fiber-reinforced cutting wheels, grinding wheels, sand cloth, paper and paste.

Chemical Composition (% by weight)

Range of Grits	Chemical Composition
Range of Grits	Al₂O₃	SiO₂	Fe₂O₃	TiO₂
24#-100#	77.00Min	11.0Min	5.0Min	1.5-3.5
120#-200#	75-81	9-12	4-6	2-3
240#-280#	64.0Min	10.0Min	7.0Min	1.5-3.0

Available Sizes

Grit No.	Micron	Grit No.	Micron	Grit No.	Micron	Grit No.	Micron
16	1400 ~ 1180	30	710 ~ 600	54	355 ~ 300	90	180 ~ 150
20	1180 ~ 1000	36	600 ~ 500	60	300 ~ 250	100	150 ~ 125
22	1000 ~ 850	40	500 ~ 425	70	250 ~ 212	120	125 ~ 106
24	850 ~ 710	46	425 ~ 355	80	212 ~ 180	150	106 ~ 75

Other sizes can be also available on request.

Packing
25 kgs or 50kgs packed in three layers bag, or can be packed on request.