| E/GPa | B/GPa | G/GPa | n | G/B | ΘD/K |
β-Si3N4 | 372 | 239 | 150 | 0.240 | 0.628 | 1034 |
β-C3N4 | 821 | 409 | 352 | 0.165 | 0.861 | 1780 |