"PAD" (Pressure Assisted Densification) Boron Carbide is characterized by outstanding hardness, low specific gravity, excellent corrosion resistance and a high neutron absorbing cross-section. This material is suitable for light weight armor, nuclear and wear applications.
BAE Systems can manufacture sizes up to 20"x20". The charts below list typical properties.
| "PAD" B4C | ||
| Bulk Density (min) | g/cm^3 | 2.485 |
| Average Grain Size |
μm |
10 |
| Flexural Strength, | Ksi | 65 |
| (4-Pt MOR) @RT | MPa | 450 |
| Characteristic Strength | MPa | 470 |
| Weibull Modulus (m) | 12 | |
| Elastic Modulus (E) | GPa | 450 |
| Poisson's Ratio (v) | 0.16 | |
| Hardness (Knoop 0.3 kg) | kg/mm^2 | 2700 |
| Fracture Toughness (Chevron Notch) | MPa-m^1/2 | 3.0 |
| Thermal Expansion (RT-1000°C) | 10^-6/°C | 5.0 |
| Thermal Conductivity @RT | (W/m-K) | 45 |
The following chart lists Chemical Balances:
| Balance | |
| Boron | 79.50% Max |
| Carbon | 22.50% Max |
| Silicon | 0.20% Max |
| Iron | 0.15% Max |
