Table 2. Bending strength and internal bond values, for the studied cork composite boards
| Types | Bending property | Internal bond |
| ρ (kg/m3) | E (MPa) | SE (MPa) | σ (MPa) | Sσ (MPa) | ρ (kg/m3) | IB (MPa) | SIB (MPa) |
| C | 402 | 25.4 | 63.1 | 1.20 | 2.98 | - | - | - |
| (1.0) | (4.7) | (4.0) | (3.4) | (2.7) | - | - | - |
| CM | 508 | 35.9 | 70.4 | 1.73 | 3.41 | 508 | 0.42 | 0.83 |
| (3.5) | (13.6) | (10.7) | (14.1) | (11.2) | (4.6) | (9.5) | (10.7) |
| CG | 448 | 32.7 | 72.8 | 1.62 | 3.61 | 411 | 0.26 | 0.64 |
| (5.0) | (11.6) | (7.1) | (11.8) | (7.4) | (3.0) | (18.8) | (21.2) |
| CC | 460 | 35.0 | 75.8 | 1.71 | 3.71 | 416 | 0.44 | 1.06 |
| (3.2) | (12.8) | (10.0) | (14.0) | (11.2) | (1.6) | (11.1) | (12.4) |
Each value in parentheses is the coefficient of variation (%).
ρ: density, E: bending modulus of elasticity, SE: specific bending modulus of elasticity, σ: bending strength, Sσ: specific bending strength, IB: internal bond, SIB: specific internal bond, C: cork board, CM: cork-metal composite board, CG: cork-glass fiber composite board, CC: cork-carbon composite board.