INTERIOR GRADE

EXTERIOR GRADE

HD 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

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