|
T E C H N I C A L P R O P E R T I E S
All VERMICULUX® board sizes are based on metric equivalents of
imperial dimensions rounded to the nearest 5mm. Standard sizes and board tolerances are outlined below. Non-standard sizes
sometimes are available upon request.
|
Thickness |
20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm
and 60mm |
|
Length x Width |
1220mm x 610mm or 1220mm x 1220mm |
|
Tolerances |
Thickness: |
+0mm to -0.8mm |
| |
Length: |
+0mm to -1.5mm |
| |
Width: |
+0mm to -1.5mm |
|
Alkalinity |
pH 7-10 |
|
Nominal density (dry) |
500kg/m³ |
| Nominal weight (at ambient conditions and EMC) |
20mm: |
10.3kg/m² |
| |
25mm: |
12.9kg/m² |
| |
30mm: |
15.5kg/m² |
| |
35mm: |
18.1kg/m² |
| |
40mm: |
20.6kg/m² |
| |
45mm: |
23.2kg/m² |
| |
50mm: |
25.8kg/m² |
| |
55mm: |
28.4kg/m² |
| |
60mm: |
30.9kg/m² |
|
Flexural strength, F rupture (average, dry) |
2.0N/mm² |
|
Modulus of elasticity, E (average, dry) |
1.4GN/m² |
|
Combustibility |
Non-combustible in accordance with the criteria of BS 476: Part 4: 1970 |
|
Surface spread of flame |
Class 1 (in accordance with the criteria of BS 476: Part 7:
1987) |
|
Building regulations classification |
Class 0 (as defined in the appropriate Building Regulations) |
|
Nominal moisture content (air dried) |
3% |
|
Moisture movement (35% to 85% RH at 20OC, ambient to saturated) |
≤0.1% |
|
Thermal conductivity (approximate at 20°C) |
0.13W/mK |
|
Coefficient of thermal expansion (20OC to 100°C per m/mK) |
7.5 x 10-8 |
All figures are approximately based on average standard production values. If a particular property is important, please
contact Intumex Asia Pacific to obtain the relevant information. A material safety data sheet is also available for request.
|
