S.No

Properties

Unit

Plain particle board

Prelaminated particle board

Grade II Interior grade

Grade I Exterior grade

Grade II

Interior grade

Grade I

Exterior grade

1

Density

Kg/m

500-900

500-900

500-900

500-900

3

Moisture content

%

5 to 50

5 to 15

5 to 15

5 to 15

4

Modulus of Rupture

N/mm2

Up to 20mm Thickness

11

15

11

15

Above 20mm thickness

11

12.5

11

12.5

5

Tensile strength perpendicular to surface

N/mm2

After cyclic test

0.2

0.2

Accelerated water resistance test

0.15

0.15

6

Water absorption

%

2 Hours

40

10

15

7

24 Hours

80

20

30

15

7

Thickness Swelling, (2 Hours Soaking)

%

Thickness

12

8

8

5

Length

0.5

0.5

Width

0.5

0.5

8

Swelling Due to surface absorption

%

9

6

9

Tensile strength perpendicular to surface

N/mm2

Up to 20mm thickness

0.3

0.45

0.3

0.45

Above 20mm thickness

0.3

0.40

0.3

0.40

10

Screw withdrawal strength

N

Face

1250

1250

1250

1250

Edge

700

850

750

850

11

Abrasion resistance

Type II

No of

450

450