Boron Carbide B4C is produced by high temperature smelting boric aid and carbon materails in electric furnaces.
Boron CarbideB4CChemical Composition and Physical Properties
| Boron Carbide B4C Chemical Composition(%) | ||
| B % | 78-81 | |
| C% | 17-22 | |
| Fe2O3% | 0.2-0.4 | |
| B4C% | 97-99 | |
| Boron Carbide B4C Physical Properties | ||
| Color | Black | |
| Molecular Formula | B4C | |
| Density & phase | 2.52g/cm3 Solid | |
| Solubility In Water | Insoluble | |
| Melting Point | 2450°C | |
| Boiling point | 3500°C | |
| Crystal Structure | Rhombohedral | |
| Mohs Hardness | 9.6 | |
| Micro Hardness | 4950kgf/mm2 | |
| Particle Size Distribution of Boron Carbide (FEPA) | |||||||||||||||
| Particle Size | Coarsest Size | Coarser Size | Basic Size | Mixed Size | Coarse Size | ||||||||||
| Sieve Size | Residue on | Sieve Size | Residue on | Sieve Size | Residue on | Sieve Size | Residue on | Sieve Size | Residue on | ||||||
| mm | µm | Sieve % | mm | µm | Sieve % | mm | µm | Sieve % | mm | µm | Sieve % | mm | µm | Sieve % | |
| F4 | 8 | – | 0 | 5.6 | – | 20 | 4.75 | – | 40 | 4.75～4.00 | – | 70 | 3.35 | – | 3 |
| F5 | 6.7 | – | 0 | 4.75 | – | 20 | 4 | – | 40 | 4.00～3.35 | – | 70 | 2.8 | – | 3 |
| F6 | 5.6 | – | 0 | 4 | – | 20 | 3.35 | – | 40 | 3.35～2.80 | – | 70 | 2.36 | – | 3 |
| F7 | 4.75 | – | 0 | 3.35 | – | 20 | 2.8 | – | 40 | 2.80～2.36 | – | 70 | 2 | – | 3 |
| F8 | 4 | – | 0 | 2.8 | – | 20 | 2.36 | – | 45 | 2.36～2.00 | – | 70 | 1.7 | – | 3 |
| F10 | 3.35 | – | 0 | 2.36 | – | 20 | 2 | – | 45 | 2.00～1.70 | – | 70 | 1.4 | – | 3 |
| F12 | 2.8 | – | 0 | 2 | – | 20 | 1.7 | – | 45 | 1.70～1.40 | – | 70 | 1.18 | – | 3 |
| F14 | 2.36 | – | 0 | 1.7 | – | 20 | 1.4 | – | 45 | 1.40～1.18 | – | 70 | 1 | – | 3 |
| F16 | 2 | – | 0 | 1.4 | – | 20 | 1.18 | – | 45 | 1.18～1.00 | – | 70 | – | 850 | 3 |
| F20 | 1.7 | – | 0 | 1.18 | – | 20 | 1 | – | 45 | 1 | 850 | 70 | – | 710 | 3 |
| F22 | 1.4 | – | 0 | 1 | – | 20 | – | 850 | 45 | – | 850～710 | 70 | – | 600 | 3 |
| F24 | 1.18 | – | 0 | – | 850 | 25 | – | 710 | 45 | – | 710～600 | 65 | – | 500 | 3 |
| F30 | 1 | – | 0 | – | 710 | 25 | – | 600 | 45 | – | 600～500 | 65 | – | 425 | 3 |
| F36 | – | 850 | 0 | – | 600 | 25 | – | 500 | 45 | – | 500～425 | 65 | – | 355 | 3 |
| F40 | – | 710 | 0 | – | 500 | 30 | – | 425 | 40 | – | 425～355 | 65 | – | 300 | 3 |
| F46 | – | 600 | 0 | – | 425 | 30 | – | 355 | 40 | – | 355～300 | 65 | – | 250 | 3 |
| F54 | – | 500 | 0 | – | 355 | 30 | – | 300 | 40 | – | 300～250 | 65 | – | 212 | 3 |
| F60 | – | 425 | 0 | – | 300 | 30 | – | 250 | 40 | – | 250～212 | 65 | – | 180 | 3 |
| F70 | – | 355 | 0 | – | 250 | 25 | – | 212 | 40 | – | 212～180 | 65 | – | 150 | 3 |
| F80 | – | 300 | 0 | – | 212 | 25 | – | 180 | 40 | – | 180～150 | 65 | – | 125 | 3 |
| F90 | – | 250 | 0 | – | 180 | 20 | – | 150 | 40 | – | 150～125 | 65 | – | 106 | 3 |
| F100 | – | 212 | 0 | – | 150 | 20 | – | 125 | 40 | – | 125～106 | 65 | – | 75 | 3 |
| F120 | – | 180 | 0 | – | 125 | 20 | – | 106 | 40 | – | 106～90 | 65 | – | 63 | 3 |
| F150 | – | 150 | 0 | – | 106 | 15 | – | 75 | 40 | – | 75～63 | 65 | – | 45 | 3 |
| F180 | – | 125 | 0 | – | 90 | 15 | – | 63 | 40 | – | 63～53 | 65 | – | – | – |
| F220 | – | 106 | 0 | – | 75 | 15 | – | 53 | 40 | – | 53～45 | 60 | – | – | – |
