Kumthai Abrasives Co., Ltd.  

Product Name: Superhard Abrasive Boron Carbide (B4C) with High Hardness Superior Quality Model NO.: B4C Color: Black Customized: Customized Usage: Polishing Material: Polishing Powder Crystal Color: Black Crystal Structure: Rhombi Mohs Hardness: 9.36 Density: More Than 2.52g/cm3 Flexural Strength: 300-500MPa Compressive: 3000-5000MPa Trademark: kumthai Transport Package: Iron Drum, Paper Drum, Paper Bag, Carton Box, etc. Specification: F4-F2000. Origin: Zhengzhou, China HS Code: 2849901000 Product Description Superhard Abrasive Boron Carbide (B4C) Powder with High Hardness Superior QualityBoronCarbidePowder(B4C) a black crystal powder, is one of the hardest Man-Made materials, its hardness with Mohs hardness 9.36 and microscopic hardness 5400-6300kg/mm2 is only near upon diamond, its density is 2.52g/cm3 and melting point is 2450ºC, The boron carbide possesses properties of endurance hi/low temperature, no reaction with either acids or alkalis, high grinding efficiency, no magnetism. It is a good replacement of diamond. Boron carbide also possesses the special properties of light quality, neutron absorbing, semi-conductivity, etc., so it is often used for armed forces and nuclear industry.Boron carbide is widely applied as follows: boriding refractory, ion transfusion, film layer as well as grinding, polishing, drilling hard metal alloys, jewels, etc. Meanwhile, it is main material for the wear-resisting parts, precise meter-age element, precise spray nozzle, sealed washer, smelting boron steel, boron alloy, bullet-proof vest, plane and the armour-plate board of tank and other domains.Boron carbide has showed many better properties of physics and chemistry in the hi-science/technology field.PhysicalCharacteristicsItemCrystalsystemCrystalcolorDensityMeltingpointMohshardnessMicrohardnessBoroncarbideHexagonalBlack2.52g/cm32450ºC9.365400-6300kg/mm2ChemicalCompositionGritChemicalcomposition(%,byweight)B4CT.BF.BT.CF.CFe2O3F4-F90≥95≥76≤0.318-21≤1.5≤0.3F100-F220≥96.5≥76≤0.318-21≤1.6≤0.3F230-F320≥9677-81≤0.418-21≤1.5≤0.2F360-F500≥9576.5-80≤0.418-21≤1.8≤0.2F600-F800≥9476-80≤0.4518-21≤2.0≤0.25F1000-F1200≥93.576-79≤0.518-21≤2.5≤0.3Note:Specialrequirementonchemicalcompositioncanbesatisfiedthroughdiscussion.