Factory Price Black Fused Alumina with Different Grit Sizes
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Product Highlights
- High Purity Composition: Al2O3 content ranges from 67% to 80% depending on grit size.
- Superior Durability: Features moderate rigidity, fine tenacity, and self-sharpness.
- Versatile Applications: Ideal for polishing metal, stainless steel, optical glass, and lumber.
- Surface Protection: Low heat generation prevents workpiece scoring or discoloration.
- Customizable Packaging: Available in PP bags, paper bags, jumbo bags, or pallets.
- Fast Sample Delivery: Free samples shipped via Express services like FedEx or DHL.
- Flexible Lead Time: Production within 15 workdays for both peak and off-peak seasons.
- Global Shipping Options: Multiple Incoterms available from major Chinese ports.
Product Attributes
- Customization
- Available
- Natural Abrasive Type
- Natural Corundum
- Artificial Abrasive Type
- Corundum Abrasives
- Application
- Machinery
- Function
- Surface Finish
- Source
- Artificial Abrasives
- Particle Size
- Mill
- Hardness
- Conventional Abrasive
- Crystal Color
- Black
- Basic Mineral
- Alpha- Al2O3
- Crystal System
- Hexagonal
- Mohs Hardness
- 9
- Density
- More Than 3.90g/cm3
- Usage
- Polishing, Grind, Sand Blasting, Refractory
- Transport Package
- 25kg P.P Bag + Jumbo Bag, 25kg Paper Bag +Pallet.
- Specification
- F8-F1000, etc
- Trademark
- kumthai
- Origin
- Zhengzhou, China
- HS Code
- 2818109000
- Production Capacity
- 10000tons / Month
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Product Description
Black Fused Alumina (BA) is produced by fusion of bauxite,iron oxide and other microelements of sound quality in an electric arc furnace at high temperatures. The product shows fine performance of moderate rigidity, fine tenacity, self-sharpness, caking property and durability. The little amount of caloric power produced by grinding will not score the work pieces and not arouse surface discolorations of them; the smooth finish of them will be higher. The materials are mainly applied to the polishing of surface of metal parts before the electroplating,especially suitable to the finishing of parts of stainless steel, and also applicable to polishing of such materials as optical glass and lumber to make coated abrasive tools of resin, coated abrasive etc. All kinds of segment sand special use for freeway, airdrome runway, road surface of bridge, wearable and skid-proof ground.
| Chemical Composition | |||
| Grit | General Products | Grit | Choicest Products |
| Al2O3(%,by weight) | Al2O3(%,by weight) | ||
| F8-F80 | ≥73.00 | F60-F240 | ≥80.00 |
| F90-F400 | ≥67.00 | F280-F1000 | ≥73.00 |
Packaging & Shipping:
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/DHL/UPS/EMS...
More Fused Alumina Aluminium Oxide Abrasive Grains can be provided for your testing and comparing our quality with others.




About the Supplier
This supplier has been audited by TÜV Rheinland. Verify the report on the official TÜV Rheinland website with ID "MIC-ASR239506". Items marked "" are certified.
Company Profile
Kumthai Abrasives Co., Ltd. is located in Zhengzhou - a central city and an important manufacturing base for producing China's abrasives superhard materials. Kumthai has always focused on the design, development, production and sales of China's advanced quality abrasives superhard materials for many years and sold to many countries around the world, enjoying a good reputation among customers for their product quality and better customer service. In addition, OEM, ODM and own Brand(KUMTHAI) can be provided according to customers' requirements.
At present, the company has many production workshops, especially in the field of superhard materials, they have more international advanced production equipment and testing equipment, including two synthetic diamond powder equipment and crushed synthetic diamond equipment, several full computer control automatic grading equipment, microwave drying equipment and professional large-scale screening equipment; At the same time, the company owns their ICP chemical analyzer, scanning electron microscope, morphology analyzer, imported laser particle size analyzer, etc. In addition, the company owns a series of process control equipment for cleaning and environmental products in answer to national environmental protection policy.
Kumthai Abrasives mainly focuses on the R&D, production and sales of superior quality crushed synthetic diamond grits and high strength, high purity synthetic diamond micron powders between 40 nm and 125 microns. The monthly output of synthetic diamond micron powders reached 25 million carats, and the monthly output of crushed synthetic diamond grits reached around 30 million carats.
Kumthai Abrasives, as a professional manufacturer of synthetic diamond abrasives in China, has professional technology R&D team and service team that are keen to provide customers with professional technical support and product services. At the same time, the company is always eager for the chance to cooperate with more enterprises and customers from all over the world. Kumthai Abrasives is committed to be the world leading manufacturer of super abrasive grains and advanced abrasive materials, to provide high quality diamond abrasives, advanced abrasive materials and great customers services to the world.
About Our Factory & Business Background
- Address
- No. 6 Suoling Road, Jinshui District, Zhengzhou, Henan, China
- Terms of Payment
- LC, T/T, D/P
- International Commercial Terms(Incoterms)
- FOB, CFR, CIF, DAT, FAS, DDP, DAP, CIP, CPT, FCA, EXW, Others
- Average Lead Time
-
Peak Season Lead Time: within 15 workdays
Off Season Lead Time: within 15 workdays - Nearest Port
- Shanghai port, China, Qingdao port, China, Tianjin port, China
Our Production Capability & Technical Expertise
Our Industry Experience & Global Business Record
- Export Year
- 2009-05-01
- Main Markets
- North America, South America, Eastern Europe, Southeast Asia, Oceania, Mid East, Eastern Asia, Western Europe
FAQ
- What is the Al2O3 content?
- The Al2O3 content varies by grit size, ranging from 67% to 80% by weight.
- What are the main applications?
- It is used for polishing metal parts, stainless steel, optical glass, lumber, and for skid-proof ground surfaces.
- Can the packaging be customized?
- Yes, we offer PP bags, paper bags, jumbo bags, and pallets according to customer requirements.
- How long does it take to produce an order?
- The lead time is within 15 workdays regardless of the season.
- Are free samples available?
- Yes, free samples or sample orders are available and shipped via Express services.
- What payment terms do you accept?
- We accept LC, T/T, and D/P payment terms.
- Which ports are used for export?
- We ship from Shanghai, Qingdao, and Tianjin ports in China.
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Product Groups
- Crushed Synthetic Diamond Grits
- Synthetic Diamond Micron Powder
- Coated Synthetic Diamond
- Cubic Boron Nitride (CBN)
- Boron Carbide (B4C)
- Boron Carbide Nozzle (B4C Insert)
- White Fused Alumina (WA)
- Brown Fused Alumina (A)
- Black Silicon Carbide (SIC)
- Green Silicon Carbide (GC)
- Fused Alumina Zirconia (ZA)
- Black Fused Alumina (BA)
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