|
Properties |
|
Density |
|
640 kg/m³ |
|
Weight |
|
|
(Size: 1220 x 2440mm) |
12mm thick |
25.0kg approximately |
| |
16mm thick |
33.6kg approximately |
| |
19mm thick |
39.9kg approximately |
| |
22mm thick |
46.2kg approximately |
| |
25mm thick |
52.4kg approximately |
| |
32mm thick |
67.0kg approximately |
|
Other sizes available |
Width (mm) |
1220 |
| |
Length (mm) |
2440, 3050 |
|
General Characteristics |
|
Maximum recommended hot face temperatures |
|
250°C |
|
Normal moisture content |
|
6 - 8% |
|
Moisture movement |
|
|
|
ambient (30% RH, 20°C) to saturated |
|
0.05% |
|
Alkalinity (pH value) |
|
7 - 9 |
|
Fire performance to BS 476: Part 4: 1970 |
|
Non-combustible |
|
Surface spread of flame (BS 476: Part 7: 1971) |
|
Class 1 |
|
Smoke or toxic gas emission |
|
Minimal |
|
Mechanical Characteristics |
|
Young’s modulus (E value) |
|
2.7 GPa |
|
Modulus of Rupture |
|
4.8 MPa |
|
Impact strength (19mm board BS 1811: Part 2: 1969) |
|
125mm |
|
Hard body impact resistance as classified in BS 8200 |
12mm thick |
3.0 Nm |
|
Compaction under load: |
|
|
1.0% compaction |
|
1.8 MPa |
|
1.5% compaction |
|
3.7 MPa |
|
2.0% compaction |
|
7.0 MPa |
|
Brinell hardness 50kg load 10mm ball, 10 sec |
|
15 |
|
Screwholding power (BS 3536: Part 2: 1974) |
|
| |
13mm penetration-ultimate pull |
|
36 kgf |
| |
19mm penetration-ultimate pull |
|
90 kgf |
|
Thermal Characteristics |
|
Thermal conductivity (K) |
|
|
at mean temperature |
25°C |
0.180 W/m°C |
| |
100°C |
0.190 W/m°C |
| |
250°C |
0.200 W/m°C |
|
Thermal capacity |
100°C |
1130 J/kg°C |
| |
200°C |
1210 J/kg°C |
|
Coefficient of thermal expansion to 120°C |
|
6 x 10-6 per °C |
|
Thermal shrinkage 4 hrs. at 250°C |
Linear |
0.25% |
| |
Thickness |
0.60% |
|
Manufacturing Tolerances |
|
Length |
|
-0, +5mm |
|
Width |
|
-0, +5mm |
|
Thickness |
|
+0, -0.8mm |
