Composite material | Velocity mm/ms | Density g/cm3 | Impedance MRayl | Loss dB/cm@2 MHz |
CMa | 1.63 | 1.34 | 2.18 | 62.4 |
SMb | 2.32 | 1.19 | 2.75 | 18.4 |
Water (20˚C) | 1.48 | 1.00 | 1.483 | 0.08 |