Plain MDF IS Specification

Sl No.

Property

Unit

IS 12406 - 2003

(Plain)

Grade II

Grade I

1

Density

Kg/m3

600 - 900

600 - 900

2

Variation from mean density

%

±10

±10

3

Moisture Content

%

05-Oct

05-Oct

4

Variation from mean moisture content

%

±3

±3

5

Water absorption (maximum)

%

 

 

a. After 2 hr. soaking

9

6

b. After 24hr. soaking

 

 

i. Upto and including 6mm thick

45

30

ii. 7 to 12mm thick

30

20

iii 13 to 19mm thick

20

13

iv 20mm and above thick

18

12

6

Linear Expansion (maximum)

%

 

 

a. Due to general absorption after 24 hr soaking

 

 

i Thickness

7

4

ii Length

0.4

0.3

iii Width

0.4

0.3

b. Due to surface absorption (in thickness)

5

4

7

Modulus of rupture

N/mm2

 

 

a. Up to 20mm thickness

 

 

 i Average

28

28

ii Minimum Individual

25

25

b. Above 20mm thickness

 

 

i Average

25

25

ii Minimum Individual

22

22

8

Modulus of elasticity

N/mm2

 

 

a. Up to 20mm thickness

 

 

 i Average

2800

2800

ii Minimum Individual

2500

2500

b. Above 20mm thickness

 

 

i Average

2500

2500

ii Minimum Individual

2300

2300

9

Internal Bond

N/mm2

 

 

a. Upto 20mm thickness

 

 

i Average

0.8

0.9

ii Minimum Individual

0.7

0.8

b. Above 20mm thickness

 

 

i Average

0.7

0.8

ii Minimum Individual

0.6

0.7

10

Internal Bond

N/mm2

 

 

a. After cyclic test *

 

 

i Average

-

0.45

ii Minimum Individual

-

0.4

b. After accelerated water resistance test *

 

 

i Average

-

0.3

ii Minimum Individual

-

0.25

11

Screw withdrawal strength( minimum)

N

 

 

a. Face

1500

1500

b. Edge (for thickness > than 12mm)

1250

1250

12

Abrasion Resistance (Minimum) resolutions

Nos.

 

 

i Type -I

-

-

ii Type - II

-

-

iii Type - III

-

-

iv Type - IV

-