| PROPERTIES |
DESCRIPTIONS |
UNITS |
VALUES |
|
The Board |
Thickness |
|
6 / 9 / 12 / 15 / 20 |
|
Width* |
|
610 / 1220 |
|
Length* |
|
610 / 1220 / 1830 / 2440 |
|
|
|
6 for 6mm board |
|
|
|
9 for 9mm board |
|
Weight (approx.) |
kg/m² |
11 for 12mm board |
|
|
|
14 for 15mm board |
|
|
|
19 for 20mm board |
|
Density |
Normal dry density |
kg/m³ |
910 (± 10%) |
|
Strength |
Flexural strength, across grain |
MN/m² |
9 |
|
Flexural strength, along grain |
MN/m² |
6 |
|
Maximum allowable compressive load |
MN/m² |
17 |
|
Flexural Modulus of Elasticity, dry |
GN/m² |
5.5 |
|
|
|
1.5 for 6mm board |
|
Sag when suspended at 600mm span |
mm |
1 for 9mm board |
|
|
|
1 for 12mm board |
|
Bending Radius |
Minimum bending radius for board at ambient: |
|
|
|
|
|
|
4800 for 6mm board |
|
|
Along grain |
mm |
7200 for 9mm board |
|
|
|
|
9600 for 12mm board |
|
|
|
|
5400 for 6mm board |
|
|
Across grain |
mm |
8200 for 9mm board |
|
|
|
|
10900 for 12mm board |
|
|
Moisture movement (ambient to saturated) |
% |
0.40 |
|
Effect of Moisture |
Nominal moisture content: |
|
|
|
|
|
Ex work |
% |
10 to 15 |
|
|
|
In situ at EMC |
% |
3 to 5 |
|
Thermal Performance |
Thermal conductivity |
W/m.K |
0.210 |
|
Thermal movements (100-25°C) |
m/m.C |
2.4 x 10-6 |
|
Thermal shrinkage (4 hr/300°C) |
% |
14 |
|
Fire Performance |
Surface spread of flame (BS476: Part 7) |
|
Class 1 |
|
|
Building Regulations Classification (BS476: Part 6) |
|
Class 0 |
|
Tolerances |
Manufacturing tolerances: |
|
|
|
|
Length |
mm |
± 5 |
|
|
Width |
mm |
± 5 |
|
|
|
|
± 0.5 for 6mm board |
|
|
Thickness |
mm |
± 0.5 for 9mm board |
|
|
|
|
|
± 0.5 for 12mm board |
|
Difference of diagonals |
mm |
Max. 3 |
