Contact Us

Contact Person : Caroline Cui

Phone Number : 86-15003865330

WhatsApp : +8615003865330

Free call

Medium Hardness Black Aluminum Oxide Sand F12 - F240 For Polishing Stainless Steel

Minimum Order Quantity : 1MT Price : Negotiation
Packaging Details : 25kg bag+Pallet,Ton Bag Delivery Time : 7-14 days depending on the order quantity
Payment Terms : L/C, T/T Supply Ability : 2500 MTS per Month
Place of Origin: Henan,China Brand Name: YEDA
Certification: ISO9001,ISO14001 Model Number: F12-F240

Detail Information

Product Name: Black Aluminum Oxide Commodity Name: Black Fused Alumina
Usage: Polishing Stainless Steel Color: Black
True Specific Gravity: ≥3.5 G/cm3 Buck Density: 1.68-1.22 G/cm3
High Light:

solid aluminum oxide


alumina grit blasting

Product Description

Medium Hardness Aluminum Oxide Black Fused Alumina F12-F240 for Polishing Stainless Steel
1. Product Description of Aluminum Oxide Black Fused Alumina

Black Aluminum Oxide  also belongs to the group of electric corundum,it is made by high iron bauxite, high

alumina bauxite and iron oxide as main raw materials,then smelted in the electric arc furnace completely, then

made into different grit size after different processes of cooling,crushing ,screening etc.It has the characteristics

of moderate hardness,good self-sharpness,strong cutting force,not easy to burn the treatment and low cost.


2. Main Technical Index of Aluminum Oxide Black Fused Alumina

Commodity Quality Level Main Chemical Index
Al2O3 Fe2O3 SiO2 TiO2
Black Aluminium Oxide Ordinary Quality ≥60 6-12% ≤25% 2-4%

Top Quality

≥80 4-8% ≤10% 2-4%


Main Physical Index
Color Black
Crystral Structure Trigonal
Shape Block,Sharp
Mohs Hardness 8.0-9.0
Vicker Hardness 2000-2200kg/mm2
Specific Gravity ≥3.5g/cm3
Bulk Density 1.68-1.22 g/cm3
Crushed Method Barmac,Ball Mill
Product Standards GB/T,FEPA etc.


Quality Level Grit Size
Ordinary Quality Gtit: F12-F240
Section sand: 0-1mm,1-3mm,3-5mm,5-8mm
Top Quality Gtit:F46-F240
Remark:Special specifications can be customized,
products can be produced according to GB/T standards,FEPA standards etc.

3. Why black aluminum oxide has the outstanding advantages in polishing stainless steel Tableware?

Seen from the micro-structure of aluminum oxide,the alumina particles has the main grinding and polishing

effect,it is dispersed in micro-crystalline state,surrounded by the silica particles(lower strength).

When alumina particles are passivated to a certain extent in the grinding process,it will be separated from the

silica particles and fall off,then appears a new cutting edge again,which is similar to the principe of SG abrasive.


Therefore black fused alumina has the good self-sharpness,not easy to burn the treatment surface.


Compared with other higher hardness abrasives such as brown fused alumina ,black fused alumina has the

outstanding advantage of polishing stainless steel tableware:

its moderate hardness and good self-sharpness will generate little heat in the treatment surface,then hardly to

burn the treatment,finally achieve uniform and bright color.


4. How to use black fused alumina to polish the stainless steel?

When polishing the stainless steel,the common polishing method is to put several cloth wheels on the rotating

shaft of polishing machine.

Adding the bone glue or resin bond to the outer circle of the cloth wheels,then roll the cloth wheels in the plate

fulfilled with black fused alumina,ensure the outer circle of cloth wheels is evenly glued with black fused alumina,

then dry the cloth wheels. Then load it onto the polishing machine, when polishing machine rotates,the polished

part will be contacted with the outer circle of cloth wheel under a suitable pressure to finish the polishing.


In addition,black fused alumina is also available to produce sandpaper,sandbelts or convert into flap wheels etc

to polish the stainless steel and other products.

5. Product Pakages of Black  Aluminium Oxide
Ton Bag
25kg Bag+Pallets;
Special packages can be customized.
6. Why Choose us?
China Largest Black  Aluminium Oxide Manufacturer,over 20 years production experience;
Occupies more than 60% Domestic Black Aluminium Oxide marketing;
The Stable Supplier of  Saint-gobain Group and Forsoc Group etc.
7. Plant Picture
Medium Hardness Black Aluminum Oxide Sand F12 - F240 For Polishing Stainless Steel 0

You Might Be Into These
Get in touch with us

Enter Your Message
0086 150 0386 5330,0086 135 9809 9524, 0086 15003835681