BORON CARBIDE TECHNICAL DATA
| Properties | Units | Value | ||
| Physical | ||||
| Chemical Formula | - | B4C | ||
| Density, r | g/cm3 | 2.51 | ||
| Color | - | black or dark gray | ||
| Crystal Structure | - | hexagonal | ||
| Water Absorption | % @R.T. | ng | ||
| Hardness | Vickers @ R.T. (GPa) | 36 | ||
| Hardness | knoop (kg/mm2) | ng | ||
| Mechanical | ||||
| Compressive Strength | GPa @ R.T. | 2.9 | ||
| Tensile Strength | MPa@980þC | 155 | ||
| Modulus of Elasticity (Young's Mod.) | GPa@ R.T | 445 | ||
| Flexural Strength (MOR) | MPa @ R.T. | 375 | ||
| Poisson's Ratio, u | @R.T. | 0.19 | ||
| Fracture Toughness, KIc | MPa x m1/2 | ng | ||
| Thermal | ||||
| Max. Use Temperature (* denotes inert atm.) | ºC | 2450 | ||
| Thermal Shock Resistance | DT (ºC) | ng | ||
| Thermal Conductivity | W/m-K @ R.T. | 28 | ||
| Coefficient of Linear Thermal Expansion, al | 10-6 K-1 (~25ºC through ±1000ºC) | 5.54 | ||
| Specific Heat, cp | J kg-1 K-1 @ R.T. | 945 | ||
| Electrical | ||||
| Dielectric Constant | 1MHz @ R.T. | ng | ||
| Dielectric Strength | kV/mm | ng | ||
| Electrical Resistivity | Wcm @ R.T. | ng | ||
| Typical Analysis | ||
| B4C | 96.17% min. | |
| B2O3 | 0.50% | |
| Total Boron | 76.55% min. | |
| Total Carbon | 19.5% min | |
| Free Boron | 0.24% | |
| Free Carbon | 1.27% | |
| Si | 0.15% max | |
| Al | 0.05% | |
| Fe | 0.20% max | |
| pH | 7.0 | |
| Specific Gravity | 2.50 | |
| Crystal Structure | Rhombohedral | |
| Melting Point | 2450 ° C | |
| Hardness | 9.25 mohs scale | |
| Packaging | Steel or fiber drums, plastic pails | |
| Each lot is certified by a quality lab reports. | ||
| Typical Sizing |
| Boron Carbide is offered according to FEPA F Standards. Available micro grit sizes are: F240, F280, F320, F360, F400, F500, F600, F800, F1000, F1200 Standard macro grit and custom sizes such as: - 200F and –325 F as well as 12, 25 & 45 micron available upon request. |
The information contained in this document is believed to be accurate and reliable but is presented without guarantee or warranty on the part of Panadyne Inc. Nothing present herein should be interpreted as an authorization or inducement to practice any patented invention without an appropriate license