| Name | ¡@ | BN HC | BN N-1 | SBN |
| ¡@ | BN HC | BN-N-1 | SBN | |
| Composition | ¡@ | Hexagonal BN | ||
| General Properties | Color | White | White | Light Gray |
| Bulk Density(g/cm3) | 2.0 | 1.9 | 2.5 | |
| Water Adsorption Ratio(%) | 0.4 | 0.04 | - | |
| Mechanical Properties | Bending Strength (MPa) | 35 | 15 | 270 |
| Compressive Strength (MPa) | 50 | 20 | - | |
| Young's Modulus (GPa) | 20 | 10 | 80 | |
| Poisson's Ratio | - | - | - | |
| Hardness (GPA) | 1.3 | 0.8 | 5.5 | |
| Electrical Properties | Volume Resistivity [RT] (£[¡Ecm) | 10x1015 | 10x1015 | 10x1015 |
| [500¢J] (£[¡Ecm) | - | - | - | |
| Dielectric Constand [1MHz] | 4 | 4.5 | 6.5 | |
| Dielectric Tangent [1MHz] | 0.0008 | 0.0002 | 0.0053 | |
| Dielectric Strength (kV/mm) | 20 | 19 | - | |
| Theremal Properties | Max. Useable Temperature (¢J) | 2000 ¡°1 | 2000 ¡°1 | 1000 ¡°1 |
| Thermal Expansion [RT-200¢J] (/¢J) | - | - | - | |
| [RT-400¢J] (/¢J) | -0.2x10-6 | -1.8x10-6 | 2.1x10-6 | |
| [RT-600¢J] (/¢J) | -0.4x10-6 | -1.5x10-6 | 2.3x10-6 | |
| [RT-800¢J] (/¢J) | -0.1x10-6 | -1.2x10-6 | 2.4x10-6 | |
| Thermal Conductivity [RT] (W/m¡Ek) | 36 | 63 | 47 | |
| [400¢J] (W/m¡Ek) | - | 45 | - | |
| [800¢J] (W/m¡Ek) | - | 30 | - | |
| Specific Heat [RT] (kj/kg¡Ek) | 0.7 | 0.8 | 1.7 | |
| [400¢J] (kj/kg¡Ek) | 1.3 | 1.5 | 1.0 | |
| [800¢J] (kj/kg¡Ek) | - | - | - | |
| Thermal Shock Strength (¢J) | 1500 | 1500 | 1500 | |
| Vacuum Properties | Degassing [RT] (Torr¡El/s¡Ecm2) | - | - | - |
| [600¢J] (Torr¡El/s¡Ecm2) | - | - | - | |
| Helium permeability [RT] (Torr¡El/s¡Ecm2) | - | - | - | |
| Remarks | ¡°1 non-oxidative atmosphere | BN:95% Denki Kagaku Kogyo K.K. | BN:99% or more Denki Kagaku Kogyo K.K. | BN-Si3N4 Denki Kagaku Kogyo K.K. |