White Corundum / WFA / WA F4-F240 for High Grade Grinding Wheel

FOB Reference Price:Get Latest Price
$199.00 - $999.00 / Metric Ton | 1 Metric Ton/Metric Tons (Min. Order)
Shipping:
Support Sea freight
Lead Time:
Quantity(Metric Tons) 1 - 25 >25
Est. Time(days) 7 Negotiable
Customization:
Customized logo (Min. Order: 25 Metric Tons)
Customized packaging (Min. Order: 25 Metric Tons)

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Graphic customization (Min. Order: 25 Metric Tons) Less
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Overview
Quick Details
Place of Origin:
Henan, China
Brand Name:
TONTEN
Model Number:
WA-1
name:
WA F4-F240
Color:
Navy Blue after Calcination
Crystal Form:
trigonal crystal system
Mohs Hardness:
10.0
True Density:
3.95~4.0g/cm3
Bulk Density:
1.53~1.99g/cm3
Basic particle size:
45%~55%
Melting point:
2250℃
Maximum service temperature:
1900℃
Coefficient of linear expansion:
(7 - 9)*10^-6/K (0 - 1600 C)
Material:
White Corundum / WFA / WA
Usage:
Abrasives
Abrasive Grain Sizes:
WA F4-F240
Supply Ability
Supply Ability:
50000 Metric Ton/Metric Tons per Week High Grade White Corundum
Packaging & Delivery
Packaging Details
25kg/Polywoven Bag
Port
shanghai,tianjin,qingdao,lianyungang
Lead Time :
Quantity(Metric Tons) 1 - 25 >25
Est. Time(days) 7 To be negotiated
Video Description
Product Description


High Grade White Corundum

High Grade White Corundum belongs to the group of electro-corundum.White Fused Alumina is produced by fusing calcined alumina in an electric arc furnace under carefully controlled conditions at high temperature. The dense mineral is white in color, and has predominantly large crystals of Alpha Alumina.White fused alumina is iron-free, ultra pure and extremely hard. Grinding Wheel WFA

White Corundum (WFA or WA) is an important raw material for advanced refractories and abrasives, a widely used raw material in refractories, ceramics shapes, grinding wheels, sandpaper, blasting media, metal preparation, laminates, coatings, lapping, polishing, grinding, and hundreds of other applications. As it is a very pure, low iron alumina, specific refractory applications include high tech refractory castables, isostatic pressed refractories, and pre-cast refractory shapes. The benefits of White Fused Alumina in these applications are high alumina content, low impurities, and stability at high temperatures. Grinding Wheel WFA

Physical Properties
Chemical Composition
Grain shape
Angular
AL2O3≥
99.40%
Colour
White
Na2O≤
0.40%
Fusion point(℃)
2250
SiO2≤
0.030%
Moh's hardness
9
Fe2O3≤
0.050%
Specific gravity(g/cm³)
3.9~3.98
Moisture %(m/m)≤
0.20%
Bulk Density(g/cm³)
1.4 - 2.1
Water-soluble chlorides %(m/m)
0.0025
Application

Applications

Reusable abrasive
Grinding, lapping and polishing media
Ceramic grinding wheels and grinding media
Wear-resistant and refractory products

Advantages

1, does not affect the color of the workpiece;
2, can be used in the process of iron powder is strictly prohibited to blasting;
3, fine powder level is very suitable for wet sandblasting and polishing operations;
4, high processing speed and high quality;
5, contains a very low amount of iron oxide is strictly prohibited for the residual sand blasting operations;
6, after pickling step to remove impurities.

BFA & WFA

Similarities

Both basic mineral: α-Al2O3
Both PH Value: Neutral
Both Max.usable temperature in air is 1900 Celsius degree, decomposition point is 2250 Celsius degree.
Both main chemical composition of finished products are: Al2O3
Both main applications are: in refractory and abrasives products.
Both Mohs hardness are: 9.0

Differences

BFA bulk density is (1.53~1.99g/cm3) and true density (3.90g/cm3). While WFA bulk density (1.75~1.95g/cm3) and true density (3.95~3.97g/cm3).
Main raw material of BFA is bauxite, and main raw material of WFA is calcined alumina powder.
BFA has Al2O3 content of 95% Min., WFA has Al2O3 Content of 99% Min.
BFA has refractory temperature 1850 Celsius degree, WFA has refractory temperature 2100 Celsius degree.
Although their Mohs hardness is 9.0,WFA is even harder than BFA, and BFA is more flexible than WFA.





Package & Delivery

Custom Packaging

Example: Paper bags with wooden bead on pallets. 

Other custom packaging or LOGO is also welcomed. 

Strong Jumbo Bags

Only provide strong jumbo bags with 

plastic inner and Bottom discharge 

outlet.

Common 25KG PP Bags

25KG plastic bags is the regular packaging with free charge. 

More Abrasives

Al2O3 ≥ 95% or customized
Color: Dark Brown
Mohs Hardness: ≥9.0
True Density: ≥3. 90g/cm3
Bulk Density: 1.53~1.99g/cm3

Al2O3≥99.4%
Color: White
Mohs Hardness: 10.0
True Density: 3.95~4.0g/cm3
Bulk Density: 1.53~1.99g/cm3

Al2O3: 60%~80% or customized
Color: Black
Mohs Hardness: ≥9.0
True Density: ≥3. 50g/cm3
Bulk Density: 1.53~1.99g/cm3

Color: Black
Mohs Hardness: 6-7
True Density: 3. 50g/cm3
Bulk Density: 1.75g/cm3

Color: Red or Dark Red
Appearance: Angular particle
Hardness: 7.0-8.0 Moh
Specific Gravity: 3.9-4.1g/cm3

Color: Transparent
Specific gravity: 2.4-2.6g/cm3
Bulk density: 1.5g/cm3
Moh's Hardness: 6-7 Mohs 

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