MDF

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.
  • 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
20
13
12

3

15
10
7
6
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

25
22





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

2500
2200


3400
3100

3100
2900
9 Internal bond, N/ mm2
a) Up to 20mm thickness
 Average
 Min. Individual
b) Above 20mm thickness
 Average
 Min. Individual


0.9
0.8

0.8
0.7


1.1
1.0

1.0
0.9
10 Internal bond, N/ mm2
a) After cyclic test
 Average
 Min. Individual
b) After accelerated water resistance test
 Average
 Min. Individual

0.45
0.40



0.30
0.25

0.50
0.42



0.40
0.35
11 Screw Withdrawal test (Min), N
a) Face
b) Edge (for thickness >12mm)

1500
1250

1650
1350