Black silicon carbide F400 grinding powder
Introduction of Black silicon carbide F400 grinding powder
Black silicon carbide F400 grinding powder is an excellent abrasive media for ceramic and glass. It is a suspension-treated black SiC powder. It is of higher purity since it’s acid washing and water flow sieving process. The Black silicon carbide powder has a sharper granule than that of F grit powder. That shape make grains more easily to glue sand onto coated abrasive base such as cloth and paper and stick tight on those bases.
Properties of Black silicon carbide F400 grinding powder:
Very clean with few impurities such as free carbon, etc.
High hardness, retaining hardness, and high wear resistance.
Excellent thermal shock resistance with high thermal conductivity and low linear thermal expansion.
Good particle distribution with narrow particle range.
Good ability to withstand the strongest alkalis and acids.
Particle size distribution of Black silicon carbide F400 grinding powder:
| D10(um) | D50(um) | D90(um) | D97(um) | D(3,2)(um) | D(4,3)(um) | Span |
| 11.706 | 18.523 | 28.092 | 33.694 | 17.172 | 19.222 | 0.885 |
Chemical composition of Black silicon carbide F400 grinding powder
| Grit size | F230-F240 | F280-F400 | F500-F800 | P1000-F1200 |
| SiC | Min. 99.2% | Min. 99.0% | Min. 98.5% | Min. 98.0% |
| SiO2 | Max. 0.5% | Max.0.6% | ||
| Fe2O3 | Max.0.1% | Max.0.2% | ||
| F.C | Max.0.2% | Max.0.3% | ||
Typical physical properties of Black silicon carbide F400 grinding powder
| Hardness: | Mohs:9.2 |
| Melting Point: | dissociated at about 2300 °C |
| Maximum service temperature: | 1900℃ |
| Specific Gravity: | 3.2-3.45 g/cm3 |
| Bulk density(LPD): | 1.2-1.6 g/cm3(depends on the size) |
| Color: | Black |
| Particle shape: | Hexagonal |
| Modulus of Elasticity | 58-65×106 psi |
| Coefficient of Thermal Expansion | 3.9-4.5 x10-6/ ℃ |
| Thermal Conductivity | 71-130 W/MK |
Applications of Black silicon carbide F400 grinding powder:
Lapping powder for ceramics, glass, and jade.
Grinding media on stone, marble, and granite.
Grinding non-ferrous metals.
Knife Grinder, whetstone, oilstone, grinding stone, honing, sharpening sticks, etc.
Wear a resistance layer on bakes, etc.
Available sizes of Black silicon carbide powder
| Grit Size | D3(um) | D50(um) | D94（um) |
| F230 | <82 | 53.0±3.0 | >34 |
| F240 | <70 | 44.5±2.0 | >28 |
| F280 | <59 | 36.5±1.5 | >22 |
| F320 | <49 | 29.2±1.5 | >16.5 |
| F360 | <40 | 22.8±1.5 | >12 |
| F400 | <32 | 17.3±1.0 | >8 |
| F500 | <25 | 12.8±1.0 | >5 |
| F600 | <19 | 9.3±1.0 | >3 |
| F800 | <14 | 6.5±1.0 | >2 |
| F1000 | <10 | 4.5±0.8 | >1 |
| F1200 | <7 | 3.0±0.5 | >1(at 80%) |
The production process of Black silicon carbide powder ：
Product Qualification of Black silicon carbide powder
ISO 9001:2015 Certificate
TUV certificate
Package of Black silicon carbide powder
- 25 kgs/PVC Bag with plastic inner bag.
- 1MT /Jumbo Bag
- 25 kgs/PVC Bag,40Bags/Jumbo Bag
- 1 Metric Ton/Jumbo Bag/Pallet
- 25 kgs/paper bag,1MT/Pallet
- Other customized package are available
FAQ：
Q: Are you a manufacturer?
A: We are manufacture. We began to produce silicon carbide material since 1999.
Q: Is the carborundum powder from you made by air flow or water flow process?
A: Our carborundum powder finer than F230 are made from water flow process after acid washing. The powder get narrow particle distribution range.
Q: What grade of silicon carbide do you have?
A: Expect metallurgical black silicon carbide, the silicon carbide from us are all of A grade quality.
Q: How will you check silicon carbide quality before delivery?
A: We will check the chemical content, cleanness of the SiC grain and powder. And inspect the gradation, bulk density of SiC grain and powder.
Q: Do you support third part quality test?
A: Yes, we are open to get third part quality test before delivery.
Q: Are the silicon carbide material from you is reclaimed material?
A: No. We only produce A grade silicon carbide produced from high quality melted SiC blocks.
Q: Is there any restriction to export silicon carbide from China?
A: Yes, it need to provide export license to Chinese customs. We could provide it and make custom clearance in China.
Q: Are free samples available?
A: Yes, we provide free samples within 1 kg. The customer only needs to bear the logistic cost.
Q: What is the lead time for each order?
A: It depends on the quantity required. Generally, 5-10 days for FCL(20-25MT).
Q: What is your annual capacity?
A: Our capacity is 1800-2000MT per month, annually appr. 22000 MT.
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