80% Al2O3 Black Fused Alumina Abrasive Materials

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80% Al2O3 Black Fused Alumina Abrasive Materials

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F36 F20

Black Fused Alumina Introduction:
Black fused alumina is also called black aluminum oxide or black corundum. It is a new type of polishing materials. It is a dark gray crystal, melted in electric arc furnaces by using the bauxite as its raw material. Black fused alumina is characterized by low Al2O3 and a certain amount of Fe2O3 (10% more or less) content, so it has characteristics of moderate hardness, high toughness, high-temperature resistance, and stable thermal stability. It is mainly suitable for free grinding, such as coarse grinding before electroplating products, mainly for polishing and sandblasting of stainless steel, fabricated metal products, optical glass, and it is also new abrasive for manufacturing resin grinding wheel, cut-off wheels and emery cloth. The black fused alumina of concentrated basic tablets, with the characteristics of strong cutting power, high toughness, high flexibility, good abrasion resistance and high working efficiency, which is the best product for grinding and polishing, sandblasting stainless steel products.

Black Fused Alumina Chemical Analysis:

Specifications	Main Chemical Composition %
Specifications	Al2O3	Fe2O3	SiO2	TiO2
BA—1	81-85	6-9	5-8	2-4
BA—2	75-80	9-12	8-10	4-6

Black Fused Alumina Physical Properties:

Item	Indicators
Color	Black
Crystal	Trigonal system
Hardness (Mohs)	= 9.0
Melting point (°C)	2050
The maximum temperature (°C)	1850
True Density (g/cm3)	= 3. 50
Linear expansion coefficient (0-1600 °C)	7-9

Black Fused Alumina Applications:
• For abrasives, such as ceramic grinding wheels, resin grinding wheel, sandpaper, abrasive cloth, abrasive belt, etc.
• For anti-slip road surface preparation
• Polishing and sandblasting of stainless steel
• Refractory materials in high-temperature resistance in steel metallurgy

Black Fused Alumina Available Grain Size:

Grit No.	Micron	Grit No.	Micron	Grit No.	Micron
10	2360 ~ 2000	30	710 ~ 600	80	212 ~ 180
12	2000 ~ 1700	36	600 ~ 500	90	180 ~ 150
14	1700 ~ 1400	40	500 ~ 425	100	150 ~ 125
16	1400 ~ 1180	46	425 ~ 355	120	125 ~ 106
20	1180 ~ 1000	54	355 ~ 300	150	106 ~ 75
22	1000 ~ 850	60	300 ~ 250	180	90 ~ 63
24	850 ~ 710	70	250 ~ 212	220	75 ~ 53

Packaging:
1M/T big bag or 25kgs bag, Pallet available

Our Advantages:
1.Professional manufacturer, more than 20 years experiences
2.Ensure clients stable quality
3.Having our own testing laboratory which guarantees products quality
4.Available to deliver samples to clients before place an order. Trail order for testing is also workable.
5.Production capacity: over 40, 000 tons per year.

6.Available to customize according to clients specifications.

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Luoyang Yannuo Import and Export Trade Co.,Ltd

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