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YANNUO BLACK SILICON CARBIDE
Black Silicon Carbide Refractory materials
Black Silicon Carbide Abrasive
Introduction:
Black Silicon Carbide is also called black carborundum. This material is obtained from the synthesis of high purity quarts sand and petroleum coke as basic raw materials under high temperature in an electric resistance furnace. Compared with green silicon carbide, the purity, hardness and brittleness of black SiC are lower. It contains 85-98% of SiC and the admixtures of Fe2O3, Al2O3, CaO, SiO2, MnO2. It is characterized by great hardness (9,2 in Mohs scale) and micro hardness (circa 2940- 3320 kG/mm2). Besides, it's good thermal conductivity, low thermal expansion (decreasing with temperature growth) and high strength ensure black sic widely used. It is hardness and sharpness makes it a very aggressive material for application in which high purity is requested. Sic is widely used in grinding wheels, lapping materials, and refractory raw materials.
Chemical Analysis:
PurposeGrainChemical(%)
SIC minF.C maxFe2O3max
Abrasive gradeF12-80980.200.6
90-150970.300.8
180-22096.50.301.2
240-1200960.351.35
Refractory gradeSection
Sand0-1mm
1-3mm
3-5mm
5-8mm970.351.35
Fine
Powder-180mesh
-200mesh
-240mesh
-320mesh970.351.35
Physical Properties:
ColorBlack
Hardness(mohs)≥9
Micro hardness(kg/mm2)2940-3320
Melting point(℃)2600
Maximum temperature(℃)1900
True density(g/cm3)3.20-3.25
Bulk density(g/cm3)≥1.38
High thermal conductivity(W/m-K)100
Linear expansion coefficient (at 900℃α·10-6K-1)4.4
Applications:
• For making coated and bonded abrasives applications.
• Used in advanced refractory materials, functional ceramics and metallurgical materials.
• For grinding, lapping, precision casting, etc.
Available Grain Size:
Macrogrit Sizes F12 to F220
0-1mm, 1-3mm, 3-5mm, 5-8mm, etc.
Grit No.MicronGrit No.MicronGrit No.Micron
102360 ~ 200030710 ~ 60080212 ~ 180
122000 ~ 170036600 ~ 50090180 ~ 150
141700 ~ 140040500 ~ 425100150 ~ 125
161400 ~ 118046425 ~ 355120125 ~ 106
201180 ~ 100054355 ~ 300150106 ~ 75
221000 ~ 85060300 ~ 25018090 ~ 63
24850 ~ 71070250 ~ 21222075 ~ 53
Packaging:
1M/T big bag or 25kgs bag, Pallet available
Our Advantages:
1.Professional manufacturer, more than 20 years experiences
2.Ensure clients stable quality
3.Having our own testing laboratory which guarantee products quality
4.Available to delivery sample to clients before place an order. Trail order for testing is also workable.
5.Production capacity: over 40, 000 tons per year.
6.Available to customized according clients specifications.China silicon carbide powder
website:http://www.yn-abrasive.com/abrasive-and-refractory-material/silicon-carbide/