Superior Quality High Purity Boron Carbide (B4C) for Longest Service Life B4C NozzlesBoron Carbide Powder (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.
| Physical Characteristics |
| Item | Crystal system | Crystal color | Density | Melting point | Mohs hardness | Micro hardness |
| Boron carbide | Hexagonal | Black | 2.52g/cm3 | 2450ºC | 9.36 | 5400-6300kg/mm2 |
| Chemical Composition |
| Grit | Chemical composition(%,by weight) |
| B4C | T.B | F.B | T.C | F.C | Fe2O3 |
| F4-F90 | ≥95 | ≥76 | ≤0.3 | 18-21 | ≤1.5 | ≤0.3 |
| F100-F220 | ≥96.5 | ≥76 | ≤0.3 | 18-21 | ≤1.6 | ≤0.3 |
| F230-F320 | ≥96 | 77-81 | ≤0.4 | 18-21 | ≤1.5 | ≤0.2 |
| F360-F500 | ≥95 | 76.5-80 | ≤0.4 | 18-21 | ≤1.8 | ≤0.2 |
| F600-F800 | ≥94 | 76-80 | ≤0.45 | 18-21 | ≤2.0 | ≤0.25 |
| F1000-F1200 | ≥93.5 | 76-79 | ≤0.5 | 18-21 | ≤2.5 | ≤0.3 |