Intrinsic characteristics for thickness certified under M3010 (Mark III system)
Nominal thickness of plywood, mm |
9 |
12 |
15 |
18 |
35 |
Strength limit for cleaving through adhesive layer after thermal shock, average, MPa |
≥3.5 |
≥3.5 |
≥3.5 |
- |
≥2.5 |
Strength limit for cleaving through adhesive layer after boiling, average, MPa |
≥1.4 |
≥1.4 |
≥1.4 |
- |
≥1.4 |
Static bending strength along and across the grain of face plies, MPa |
- |
≥30 |
- |
≥30 |
- |
Tensile strength along the grain of face surfaces, average, MPa |
60 |
60 |
60 |
- |
- |
Tensile strength across the grain of face surfaces, average, MPa |
40 |
40 |
40 |
- |
- |
Tensile strength perpendicular to the sheet plane, average, MPa |
≥2 |
≥2 |
≥2 |
- |
≥1.8 |
Tensile strength perpendicular to the sheet plane after thermal shock, average, MPa |
≥1.8 |
≥1.8 |
≥1.8 |
- |
≥1.8 |
Compressive strength perpendicular to the bonding plane, average, MРa |
- |
≥4.5 |
- |
≥4.5 |
- |
Sheet nominal thickness, mm |
9 |
12 |
15 |
18 |
35 |
Minimal number of plies, pcs. |
7 |
9 |
11 |
13 |
27 |
Tolerances, mm |
-0.2/+0.5 |
±0.5 |
-0.7/+0.3 |
-0.9/+0.1 |
-0/+5 |