TECHNICAL INFORMATION: Physical & Mechanical Properties of
PRE LAMINATED MEDIUM DENSITY FIBER BOARDS

PROPERTIES

UNITS

Prelaminated MDF specifications
as per IS: 14587: 1998

Grade 1
(Exterior Grade)

Grade 2
(Interior Grade)

1.1 Density Variation (Max.)
1.2 Water absorption (Max.)
         a) 2h
         b) 24 h
1.3 Thickness swelling (Max.) 2h
1.4 Modulus of rupture (Min)
         a) Up to 20 mm thickness
              Average
              Minimum individual
         b) Above 20 mm thickness
              Average
              Minimum individual
1.5 Modulus of elasticity
         a) Up to 20 mm thickness
              Average
              Minimum individual
         b) Above 20 mm thickness
              Average
              Minimum individual
1.6 Tensile strength perpendicular to surface
         a) Up to 20 mm thickness
              Average
              Minimum individual
         b) Above 20 mm thickness
              Average
              Minimum individual
1.7 Tensile strength perpendicular to surface
         a) After cyclic test*
              Average
              Minimum individual
         b) After accelerated water resistance**
              Average
              Minimum individual
1.8 Screw withdrawal strength (Min.)
         a) Face
         b) Edge
1.9 Abrasion resistance (Min.) in number of revolutions:
         a) Type 1
         b) Type II
         c) Type III
         d) Type IV

%

%

%

N/mm2

 
 
 
 
 

N/mm2

 

 
 
 

N/mm2

 
 
 
 
 
 

N/mm2

 
 
 
 
 
 

N

 
 
 
 
 
 
 
 

± 10

 

6

12

4

 
 

28

25

 

25

22

 
 

2800

2500

2500

2300

 
 

0.9

0.8

 

0.8

0.7

 
 

0.45

0.40

 

0.30

0.25

 

1500

1250

 
 

1000

450

250

75

± 10

 

9

18

7

 
 

28

25

 

25

22

 
 

2800

2500

 

2500

2300

 
 

0.8

0.7

 

0.7

0.6

 
 

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1500

1250

 
 

1000

450

250

75

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