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Black corundum hardness 8.5 aluminium oxide granules

Product Description

Black corundum hardness 8.5 aluminium oxide granules

Product Description

Black corundum named low aluminum corundum, is in electric arc furnace, the Bauxite made by melting a is given priority to with alpha Al2O3 and spinel mineral phase of the colored crystals, its characteristic is Al2O3 content is lower, and has a certain amount of Fe2O3 (10%), thus has moderate hardness, high toughness, high temperature resistant, thermal steady state performance characteristics. More for free grinding, such as the beat of the products before electroplating grinder coarse grinding, it is mainly used for stainless steel, metal products, optical glass, bamboo and wood products polishing and sanding, making resin grinding wheel, cutting slices, new abrasive cloth. The company black corundum abrasive basic particle concentration, strong cutting force, tenacity is big, and flexibility, good abrasion resistance, high working efficiency. Grinding polishing, sandblasting stainless steel products is the ideal product.


Black corundum hardness 8.5 aluminium oxide granules usage:

    1, freedom, grinding, such as floor polishing before plating metal parts, aluminum products.

    2, bicycle, motorcycle, sewing machine, clock parts.

    3, lamp act the role ofing, plastic and hardware tools, such as polishing, is also suitable for sandblasting (spray derusting, glass flower).

    4, processing and manufacturing resin cutting, Angle grinding pills and coated abrasive, etc.

    5, black corundum sand granularity and micro powder particularly suitable for grinding and polishing of stainless steel workpieces and sharpening stone, grinding paste manufacturing.

    6, black corundum sand antiskid pavement and coal mine under storage material of choice.



Product Name

BFA/WFA/Black Fused Alumina



Size (mm)

Grain: 0-1, 1-3, 3-5, 5-8mm;

Powder: 200, 320mesh;

F Powder: 16,20,24,30,36,46,60,80,100,120,150,180,200,320mesh.

Main Index



< 0.05(WFA)

Fe2O3 (%)

<0.3 (BFA)

0.03-0.04 (WFA)

Al2O3 (%)


Gravity (g/cm3)


Hardness (Mohs)




ü Strong hardness;

ü Large specific area;

ü Good wear resistance ability;

ü High strength;

ü Perfect toughness.

Product Application

ü Polishing ceramic;

ü sandblasting;

ü abrasive;

ü refractory.

Packaging Detail

ü 25kg or 50kg per bag;

ü Jumbo bag, like 1 ton;

ü Special packing requirements is acceptable.




Packaging & Shipping

Black corundum hardness 8.5 aluminium oxide granules

There are 25kg white plastic woven bag, brown paper bag, ton bad and pallet;

 OEM is acceptable.



Our Services
1. Your inquiry related to our products or prices will be replied in 12hours.

2. Well-trained and experienced staffs to answer your enquires.

3. All our products have high quality warranties.

4. Sample order can be delivered within 3 working days, small order 3-5working days, mass order 7-10working days.

5. Samples can be offered by free,customers just need to pay the freight.But the freight can be returned to our customer after he/she places formal order with us.



Question 1. How can I get sample to test?

1. We can provide a certain quantity of free sample.

2. Please give us your Fedex, TNT or UPS account to arrange the sample.

3. Or you can place an order to Fedex or TNT, they will arrange the courier to pick up the free sample.

Question 2. How can I get price of our products?

Please give the exactly quantity, packing, destination port or specs requirements.

We can according to your exact requirements to give you the price.

Question 3. I don’t know whether your product can be available, how can I order this from you?

The best way is to request sample from us, testing accord to our methods,

and we will quote a price for you to check the cost. After confirm all of this.

You can contact us and place an order.

Question 4. How to use our products?

We are pleased to offer the application methods to you, it is very easy to use it.

Question 5. Can you make OEM service?

Yes, we can accept OEM service. Also we have provided OEM service to lots of big and famous companies in the order.

Question 6. Tell me what’s your minimum order quantity?

We can accept 1000kgs of the MOQ.

Question 7. How can you ensure the quality to us?

1. Quality is the life of our company, we have been engaging in this field about 9 years,

quality brings us the benefits and gives us the vitality.

2.The bulk production is the same quality as the sample we provide to you to test before the order.

3.If you still don’t trust us, you can request the third party company, such as SGS, to inspect and test the bulk cargo before shipment ( you should bear the inspection expense).


Contact us if you need more details on Black Corundum. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Aluminium Oxide Granules、Corundum Hardness. If these products fail to match your need, please contact us and we would like to provide relevant information.

Product Categories : Abrasive & Refractory > Black Fused Alumina

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