Black Corundum F16 Grit

Black Corundum also known as low-aluminum corundum, is a gray-black crystal with α-Al2O3 and iron spinel as the main ore phase produced by melting aluminum bauxite in an electric arc furnace, which is characterized by low Al2O3 content. There is a certain amount of Fe2O3 (about 10%), so it has the characteristics of moderate hardness, high toughness, high temperature resistance and stable thermal performance. It is mostly used for free grinding, such as grinding and rough grinding before electroplating of products. It is mainly used for polishing and sand blasting of stainless steel, metal products, optical glass, bamboo and wood products, and is also a novel abrasive for manufacturing resin grinding wheels, cutting sheets and abrasive cloths.

Black Corundum F16 Grit Basic Indicators:

Molecular FormulaAl2O3
AppearanceBlack Powder
CAS No.1302-74-5
HS Code28181090

Black Corundum F16 Grit Chemical Composition:

Aluminum Oxide(Al2O3)77.0%min
Iron Oxide(Fe2O3)5.0%min
Titanium Oxide(TiO2)1.5-3.5%
Silicon Oxide(SiO2)11.0%min

Black Corundum F16 Grit Physical Properties:

ItemIndicators
ColorBlack
CrystalTrigonal system
Hardness (Mohs)≥ 9.0
Melting point (°C)2050
The maximum temperature (°C)1850
True Density (g/cm3)≥ 3. 50
Linear expansion coefficient (0-1600 °C)7-9

Black Corundum F16 Grit Particle Size Distribution(PSD)

F016+2000um0+1400um≤20%+1180um≥45%+1180+1000um≥70%-850um≤3%

All data based upon RunLong Enterprise’s standard test methods. We could supply grit size according to FEPA, JIS, ANSI, GB & P Standard.

Recommendations By Seller:

Application of sandblasting: stainless steel, iron workpiece, copper workpiece, glass product, plasthetics, aluminium extruded sections,
Copper section, jean and special plus materials, plush processing and effect of pattern.

Function: Remove surface stains, remove the welding slag and matt effect, remove oxide skin, surface strengthening, the role played by light.
Sandblasting size: 46, 60, 80mesh(Big size could recycle more times. Or according to the customer’s request.

Product Specification / Models

For Refractory
0-0.1mm 0-0.2mm 0-0.5mm 0-1mm 0.5-1mm 1-3mm 3-5mm 5-8mm 100mesh 200mesh 325mesh
Other specs are available upon request.

For Bonded & Coated Abrasives
Bonded abrasives: F24 F30 F36 F40 F46 F54 F60 F80 F100 F120 F150 F180 F220 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200
Coated abrasives: P24 P30 P36 P40 P50 P60 P80 P100 P120 P150 P180 P220 P240 P280 P320 P360 P400 P500 P600 P800 P1000 P1200 P1500 P2000 P2500 P3000
Other specs are available upon request.

For Sandblasting & Grinding
F24 F30 F36 F40 F46 F54 F60 F80 F100 F120 F150 F180 F220 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200
Other specs are available upon request.

For further technical data sheet, please do not hesitate to contact us.

Black Corundum Application:

1. Free grinding, such as floor polishing before electroplating metal parts and aluminium products.

2. Bicycle, motorcycle, sewing machine, clock parts.

3. Plastic and hardware tools, such as polishing, is also suitable for sandblasting (spray derusting, glass flower).

4. Processing and manufacturing resin cutting, angle grinding pills and coated abrasive, etc.

5. Black corundum sand and micro powder, especially suitable for the grinding and polishing of stainless steel workpieces and the manufacture of grindstone and abrasive paste.

Packing and storage                                                                                       

Packing: Double coated plastic woven / paper bag, net weight 25kg.

Big bag packing, net weight 1000kg / 1250kg per clients’ request.

Storage: Dry, ventilated, moisture proof.

Delivery

1. The sample will be send by International expresses FEDEX/DHL/UPS/TNT.

2. Full container Load(FCL): By vessel Or International Railway Transportation

3. Less Than Container Load(LCL): By vessel or By air

Payment

1. Payment: T/T, Western Union, LC, Paypal.

2. MOQ: Usually 1Tons

3. Quality Warranty: 1 years

After Sales Service:

1).We are very glad that customer give us some suggestion for price and products.

2).If any question, please let us know it by E-mail or Telephone at the first time. We can deal with them for you in time.

Black Fused Alumina Tags:
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