Quality Abrasive Brown Corundum Fused Alumina Aluminum Oxide Grits

• Natural Abrasive Type: Natural Corundum
• Artificial Abrasive Type: Corundum Abrasives
• Application: Machinery
• Function: Surface Finish
• Source: Artificial Abrasives
• Particle Size: Mill
• Model NO.: F4-F1200, P12-P2500, 0-1mm, 1-3mm,3-5mm,5-8mm, etc
• Hardness: Conventional Abrasive
• Crystal Color: Brown
• Basic Mineral: Alpha- Al2O3
• Crystal System: Hexagonal
• Mohs Hardness: 9
• Density: More Than 3.90g/cm3
• Micro Hardness: Hv1800-2200 .
• Usage: Polishing, Grind, Sand Blasting, Refractory
• Transport Package: 25kg P.P Bag + Jumbo Bag, 25kg Paper Bag +Pallet.
• Specification: F8-F1200, P12-P2500, 0-1mm, 1-3mm,3-5mm,5-8mm, etc
• Trademark: kumthai
• Origin: Zhengzhou, China
• HS Code: 2818101000
• Production Capacity: 10000tons / Month

Product Description

High Quality Brown Fused Alumina Aluminum Oxide for Abrasives Refractory Sandblasting


Brown fused alumina (A) is produced by fusion of bauxite in an electric arc furnace at high temperatures. The brownish coloured product shows high hardness as well as extreme toughness. The materials are used to grind metals of high-tensile strength such as steel, annealed malleable iron and hard bronze. It can also be used as high-class refractory.
 

Grain Usages and Types
Usage	For vitrified wheels	For organic wheels	For coated abrasives	For refractory materials
Type	A	A-B	A-P	A-R

 
 

Physical Characteristics
Item	Basic mineral	Crystal system	Crystal color	Mohs  hardness	Density
Brown aluminium oxide	α- Al2O3	Hexagonal	Brown	9	≥3.90g/cm^3
Item	Micro hardness	Electrical  resistivity	Grinding ability(compared with  diamond as one)		Linear expansion  coefficient(when 900ºC α•10^-6k^-1)
Brown aluminium oxide	HV1800-2200	10^14-10^16Ω•cm	0.10		7.6

 
 

Chemical Composition
GB/T 2478-2008
Type	Grit	Chemical Composition(%, by weight)
		Al2O3	TiO2	CaO	SiO2	Fe2O3
A	F4-F80	95.00-97.50	1.70-3.40	≤0.42	≤1.00	≤0.30
	F90-F150	94.50-97.00
	F180-F220	94.00-97.00	1.70-3.60	≤0.45	≤1.00	≤0.30
	F230-F800	≥93.50	1.70-3.80	≤0.45	≤1.20	≤0.30
	F1000-F1200	≥93.00	≤4.00	≤0.50	≤1.40	≤0.30
A-B	F4-F80	≥94.00	1.50-3.80	≤0.45	≤1.20	≤0.30
	F90-F220	≥93.00	1.50-4.00	≤0.50	≤1.40	≤0.30
	F230-F800	≥92.5	≤4.20	≤0.60	≤1.60	≤0.30
	F1000-F1200	≥92.00	≤4.20	≤0.60	≤1.80	≤0.30
A-P	P12-P80	95.00-97.50	1.70-3.40	≤0.42	≤1.00	≤0.30
	P100-P150	94.50-97.00
	P180-P220	94.00-97.00	1.70-3.60	≤0.45	≤1.00	≤0.30
	P240-P800	≥93.50	1.70-3.80	≤0.45	≤1.20	≤0.30
	P1000-P1200	≥93.00	≤4.00	≤0.50	≤1.40	≤0.30
	P1500-P2500	≥92.50	≤4.20	≤0.55	≤1.60	≤0.30
A-R	0-1mm	94.00-97.50	1.50-3.80	≤0.45	≤1.40	≤0.30
	1-3mm	94.00-97.50	1.50-3.80	≤0.45	≤1.40	≤0.30
	3-5mm	94.00-97.50	1.50-3.80	≤0.45	≤1.40	≤0.30
	5-8mm	94.00-97.50	1.50-3.80	≤0.45	≤1.40	≤0.30

Note: Special requirement on chemical composition can be satisfied through discussion.

 

Guarnteed bulk density range of coarse grains(A / A-B, g/cm^3)
Grit	Grade
	Roll Crushing	Ball Mill	BMK
F12	1.84±0.05	1.92±0.05	2.00±0.05
F14	1.83±0.05	1.91±0.05	1.99±0.05
F16	1.81±0.05	1.90±0.05	1.98±0.05
F20	1.78±0.05	1.87±0.05	1.98±0.05
F22	1.76±0.05	1.85±0.05	1.96±0.05
F24	1.74±0.05	1.84±0.05	1.94±0.05
F30	1.72±0.05	1.81±0.05	1.90±0.05
F36	1.70±0.05	1.79±0.05	1.87±0.05
F40	1.68±0.05	1.76±0.05	1.85±0.05
F46	1.65±0.05	1.75±0.05	1.83±0.05
F54	1.63±0.05	1.73±0.05	1.81±0.05
F60	1.62±0.05	1.72±0.05	1.79±0.05
F70	1.60±0.05	1.69±0.05	1.78±0.05
F80	1.57±0.05	1.65±0.05	1.76±0.05
F90	1.54±0.05	1.64±0.05	1.74±0.05
F100	1.51±0.05	1.60±0.05	1.70±0.05
F120	1.49±0.05	1.59±0.05	1.68±0.05
F150	1.47±0.05	1.57±0.05	1.65±0.05
F180	1.45±0.05	1.56±0.05	1.61±0.05
F220	1.43±0.05	1.53±0.05	1.59±0.05

Note: Special requirement on bulk density can be satisfied through discussion.

 

Guarnteed bulk density range of coarse grains(A-P, g/cm^3)
Grit	Grade
	Roll Crushing	Ball Mill	BMK
P12	1.80±0.05	1.88±0.05	1.96±0.05
P16	1.78±0.05	1.85±0.05	1.94±0.05
P20	1.76±0.05	1.83±0.05	1.93±0.05
P24	1.73±0.05	1.81±0.05	1.92±0.05
P30	1.70±0.05	1.79±0.05	1.90±0.05
P36	1.68±0.05	1.76±0.05	1.88±0.05
P40	1.65±0.05	1.73±0.05	1.86±0.05
P50	1.62±0.05	1.71±0.05	1.83±0.05
P60	1.59±0.05	1.67±0.05	1.81±0.05
P80	1.57±0.05	1.64±0.05	1.77±0.05
P100	1.55±0.05	1.62±0.05	1.73±0.05
P120	1.52±0.05	1.59±0.05	1.70±0.05
P150	1.49±0.05	1.55±0.05	1.66±0.05
P180	1.47±0.05	1.52±0.05	1.62±0.05
P220	1.45±0.05	1.50±0.05	1.58±0.05

Note: Special requirement on bulk density can be satisfied through discussion.



Packaging & Shipping of BFA:

1. 25KG P.P BAG+ 1MT JUMBO BAG
2. 25KG P.P BAG+ 1MT PALLET
3. 25KG PAPER BAG+ 1MT PALLET
4. According to customers' requirements
5. Free samples or Sample orders usually shipped by Express like FedEx/TNT...