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Physical and Mechanical Properties of Plain and Pre-laminated DURATUFF MDF
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Properties
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Plain EXTERIOR GRADE MDF Boards
(Grade I) Conforms to
IS 12406:2003 |
Pre-laminated EXTERIOR
GRADE MDF Boards
(Grade I) Conforms to
IS 14587:2008 |
Plain INTERIOR GRADE MDF Boards
(GradeII) Conforms to
IS 12406:2003 |
Pre-laminated INTERIOR GRADE MDF Boards
(GradeII) Conforms to
IS 14587:2008 |
1. Standard Thickness and Density Kg/M3
a) 8mm Thickness
b) 12mm Thickness
c) 15mm Thickness
d) 17mm Thickness
e) 18mm Thickness
f) 25mm Thickness
g) 30mm Thickness
h) 35mm Thickness |
750 - 800
730 - 760
700 - 720
680 - 720
680 - 720
650 - 700
630 - 680
620 - 660 |
750 - 800
730 - 760
700 - 720
680 - 720
680 - 720
650 - 700
630 - 680
620 - 660 |
750 - 800
730 - 760
700 - 720
680 - 720
680 - 720
650 - 700
630 - 680
620 - 660 |
750 - 800
730 - 760
700 - 720
680 - 720
680 - 720
650 - 700
630 - 680
620 - 660 |
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2. Density variation (Max), percent
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± 10
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± 10
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± 10
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± 10
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3. Water absorption (Max), percent
a) 2 hours soaking
b) 24 hours soaking |
6
12 |
6
12 |
9
18 |
9
18 |
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4. Thickness swelling (Max), percent, 2 h
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4
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4
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7
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7
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5. Modulus of rupture (Min), N/mm2 :
a) Upto 20mm thickness:
Average
Minimum individual
b) Above 20mm thickness :
Average
Minimum individual |
28
25
25
22 |
28
25
25
22 |
28
25
25
22 |
28
25
25
22 |
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6. Modulus of elasticity, N/mm2 :
a) Upto 20mm thickness:
Average
Minimum individual
b) Above 20mm thickness :
Average
Minimum individual |
2 800
2 500
2 500
2 300 |
2 800
2 500
2 500
2 300 |
2 800
2 500
2 500
2 300 |
2 800
2 500
2 500
2 300 |
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7. Tensile strength perpendicular to
surface, N/mm2 :
a) After cyclic test
Average
Minimum individual
b) After accelerated water resistance
Average
Minimum individual |
0.45
0.40
0.30
0.25 |
0.45
0.40
0.30
0.25 |
-
-
-
- |
-
-
-
- |
8. Tensile strength perpendicular to
surface, N/mm2 :
a) Upto 20mm thickness:
Average
Minimum individual
b) After 20mm thickness :
Average
Minimum individual |
0.9
0.8
0.8
0.7 |
0.9
0.8
0.8
0.7 |
0.8
0.7
0.7
0.6 |
0.8
0.7
0.7
0.6 |
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9. Abrasion resistance (Min), in
number of revolutions :
Type II
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-
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450
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-
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450
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10. Screw withdrawal strength (Min), N:
a) Face
b) Edge (≥12 mm thickness)
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1500
1250
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1500
1250
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1500
1250
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1500
1250
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- Densities mentioned are for standard MDF Boards -Higher density boards are also manufactured.
- Cyclic Test – Specimens are immersed in water at 27± 2 degrees centigrade for a period of 72 hours, followed by drying in air at 27± 2 degrees centigrade for 24 hours and then heating in dry air at 70 degrees centigrade for 72 hours. Three such cycles are followed and then specimens are tested for tensile strength perpendicular to the surface.
- Accelerated Water Resistance Test – Specimens are immersed in water at 27± 2 degrees centigrade and water is brought to boiling and kept at boiling temperature for 2 hours. Specimens are then cooled in water to 27± 2 degrees centigrade and tested for tensile strength perpendicular to the surface.
NOTE
Dimensions and Tolerances shall conform to IS: 12406
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