Brown Aluminium Oxide Fused Alumina for Resin/Vitrified Bond Abrasives

• Customization: Available
• Natural Abrasive Type: Natural Corundum
• Artificial Abrasive Type: Corundum Abrasives
• Model NO.: A / A-B / A-P / A-R
• Application: Machinery
• Function: Abrasives/Grinding/Sandblasting/Refractory
• Source: Artificial Abrasives
• Particle Size: Mill
• 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

Brown Corundum Grit BFA Aluminium Oxide Fused Alumina for Different Applications

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...


Our Advantages:
 
1.With many years of export experiences and well-deserved reputation, we provide clients with stable product quality and professional technical advice.
2.OEM, ODM services and our own brand (KUMTHAI) can be provided according to customers' requirements.
3. Management System Certification: ISO 9001, ISO 9000, ISO 14001, ISO 14000
4. Products with different grades and sizes can meet different market users' demand for different product quality and prices.
5. We guarantee that our products are good quality with competitive prices, and delivery in time.
6. Technical research and development strength: The company's employees have the relevant discipline background of abrasive grains and superhard materials, and know more about abrasives and grinding. They would like to provide better services for customers to meet their different needs. What's more, the company invites senior research experts from Zhengzhou Research Institute for Abrasives & Grinding Co., Ltd. and Henan University of Technology as product consultants, which can help to achieve in-depth product technical cooperation with customers and better matching demands, combined with China's industrial advantages.
 
Our Services:
 
1. Your inquiries will be replied in 24 working hours;
2. Free samples offered in certain quantity and delivered within 10 days;
3. PL, INV, MSDS and C.O. or other information you need can be provided at the top speed;
4. Any questions about products and technology will be answered sincerely and professionally.
5. Related products sourcing services.
 
FAQ:
 
Q1: Can you offer free samples?
A: Yes, free samples can be offered in certain quantity, but big samples and special products with charge.
 
Q2: Can I have a sample order for your products?
A: Yes, we welcome sample orders to test and check the quality.
 
Q3: What is your delivery time?
A: Sample order: Usually within 7 working days
Mass order: Within 25 days after 30% deposit received for conventional products. Negotiation for special products.
 
Q4: What is your payment terms?
A: T/T, D/P, L/C and so on.
 
Q5: Do you offer customized products according to customer's requirements?
A: Yes, OEM, ODM services and our own brand (KUMTHAI) are provided according to customers' requirements.
  
Q6: Are all your products on the website?
A: Not all the products on the websites. For some related products or the sizes that are not included on the website, please make an inquiry separately to our emails or any social media.

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