Boron Carbide B4C
Boron Carbide is an extremely hard boron – carbon ceramic, only inferior to cubie boron nitride
(cBN) and diamond, people also call it black diamond This imparts exceptional wear- and
abrasion – resistant properties, enabling B4C used in the demanding application areas, like
- Control rod, shut down pellets shelds in nuclear industry.
- Neutrons absorbs in Laser and synchrotron-
- Abrasives for lapping and ultrasonic cutting
- Anti-oxidant in carbon-bonded refractory mixes
- Wear-resistant blasting nozzles, wear drawing dies, ceramics forming dies
| Density [g/cm2] | 2.51 |
| Flexual strength [Mpa] | 560 |
| Modulus of elasticity [Gpa] | 450 |
| Four points rapture strength [Mpa] | 237 |
| Knoop hardness [GPa] | 39.2 |
| Compressive strength [MPa] | 1052 |
| Fracture toughness [MPa.m½] | 3.37 |
| Heat conductivity [W/m.k] | 36.128 |
| Thermal expansion@500°C | 4.77×10-6 |
| Thermal expansion@700°C | 5.18×10-6 |
We can supply B4C ceramics in different shape and dimension. Following is our material
chemical composition and sintering products standard specification
| Total Boron | 77.14 |
| B2O3 | 0.10 |
| Free Boron | 0.44 |
| Boron Compound | 76.70 |
| Total Carbon | 20.03 |
| Free Carbon | 2.65 |
| Carbon Compound | 17.38 |
| Fe2O3 | 0.28 |
| B4C total | 94.08 |
| Maxi. Dimension | 450x450x50mm |
| Purity of B4C | 99.5% |
| Density | ≥2.5 |
| Standard tolerance** | ±0.1, ±0.5mm (irregular shape) |
| Normal Roughness | |
| Mini. Drill hole Diameter | 3mm |
| Parallelism and verticality | ±0.1mm |
*All the exact data are subject to our final production drawing
** tolerance depends on the production difficulties and shape
** tolerance depends on the production difficulties and shape
