| Property |
Unit |
Value |
| Lattice constant |
micro; m |
a:2.504×10-10 c:6.692×10-10 |
| Apparent density |
g/cm3 |
2.0 -2.21(board) 2.0 -2.17(crucible) |
| Helium transmissivity |
cm3/S |
1×10-12 |
| Solidity by microscope |
N/mm2 |
691.88 |
| Volume resistivity |
Ω·cm |
3.11×1011 |
| Tensile strength |
(Strength “C”)N/mm2 |
153.86 |
| Bending strength |
(Strength “C”)N/mm2 , a: |
243.63 |
| (Strength⊥“C”)N/mm2 , c: |
197.76 |
| Elasticity modulus |
N/mm2 |
235690 |
| Pyroconductivity |
W/m·k |
“a” direction “c“ direction |
| W/m·k (200°) |
60 2.60 |
| W/m·k (900°) |
43.70 2.80 |
| Dielectric strength (room temperature) |
KV/mm |
56 |
| Purity |
％ |
99.99-99.999/td>
|
