AK/APPLE EXTERIOR GRADE
AK/Apple MDF is an engineered wood product that is made `by compressing small wood fibres and adhesive resins using high temperature and pressure. Apple Exterior MDF is recommended for exterior application where the panel is exposed to moisture and high humidity; it has high water resistant properties. The unique feature of Apple MDF is that it has homogeneous structure and uniform properties which ensures equal strength in all directions. It can be painted or stained to look just like wood and it will not expand and contract due to heat and humidity. It has high screw retention strength on face and edges and it can be moulded, profiled, routed and grooved like natural wood. It can also be laminated, veneered, lacquered, painted or coated with PVC.
INTERIOR GRADE
EXTERIOR GRADE
HD MDF
Thickness : 2.1mm, 2.3mm, 3mm, 3.4mm, 3.6mm, 4mm, 4.5mm, 4.75mm, 5.2mm, 5.5mm, 7.3mm, 7.5mm, 11mm, 12mm, 14.5mm, 16.7mm, 17mm, 18mm, 25mm
Common Size : 8feet x 4 feet
TECHNICAL INFORMATION AS PER IS 12406
| No. | PROPERTIES | PRESCRIBED VALUE | VALUE OBTAINED |
|---|
| 1 | Density, kg/m3 | 600-900 | 750 |
| 2 | Variation from mean density, % | ±10 | +2 |
| 3 | Moisture content, % | 5-10 | 10 |
| 4 | Variation from mean moisture content, % | ±3 | +1 |
| 5 | Water absorption, % Max a) after 2 hrs soaking: b) after 24 hrs soaking: up to & including 6mm thick 7 to 12mm thick 13 to 19mm thick 20 mm thick & above |
6 30 |
3 15 |
| 6 | Linear expansion (swelling in water) %, Max a) Due to general absorption after 24 h soaking: Thickness Length Width b) Due to surface absorption (in thickness) after 2 hrs soaking |
4 0.3 0.3 4 |
2 0.1 0.1 2 |
| 7 | Modulus of rupture, N/mm2 a) Up to 20mm thickness Average Min Individual b) Above 20mm thickness Average Min Individual |
28
25 |
30 27 |
| 8 | Modulus of elasticity, N/mm2 a) Up to 20mm thickness Average Min. Individual b) Above 20mm thickness Average Min. Individual |
2800
2500 |
3400
3100 |
| 9 | Internal bond, N/ mm2 a) Up to 20mm thickness Average Min. Individual b) Above 20mm thickness Average Min. Individual |
0.9
0.8 |
1.1
1.0 |
| 10 | Internal bond, N/ mm2 a) After cyclic test Average Min. Individual b) After accelerated water resistance test Average Min. Individual |
0.45
0.30 |
0.50
0.40 |
| 11 | Screw Withdrawal test (Min), N a) Face b) Edge (for thickness >12mm) |
1500 1250 |
1650 1350 |