PRELAMINATED MDF SPECIFICATION
Sl No. |
Test |
Unit |
Pioneer MDF |
||
Pre-laminated |
|||||
Grade/Type |
Exterior/ Grade I |
Interior/ Grade II |
PDHMR |
||
1 |
Density |
kg/m3 |
500-900 |
500-900 |
500-900 |
Variation from mean Density |
% |
±10 |
±10 |
±10 |
|
2 |
Moisture Content |
% |
5-10 |
5-10 |
5-10 |
Variation from mean moisture content |
±3 |
±3 |
±3 |
||
3 |
Water absorption |
||||
a. After 2hr soaking |
% |
6.0 |
9.0 |
4-6 |
|
b. After 24hr soaking |
12 |
18 |
-10 |
||
4 |
Thickness Swelling affter 24hrs soaking |
% |
4 |
7 |
2-4 |
5 |
Modulus of rupture |
N/mm² |
|||
a. Up to 20 mm thickness |
28 |
28 |
30 |
||
b. above 20 mm thickness |
25 |
25 |
28 |
||
6 |
Modulus of elasticity |
N/mm² |
|||
a. Up to 20 mm thickness |
2800 |
2800 |
3000 |
||
b. above 20 mm thickness |
2500 |
2500 |
2800 |
||
7 |
Internal Bond Dry |
N/mm² |
|||
a. Up to 20 mm thickness |
0.90 |
0.80 |
1.5 |
||
b. above 20 mm thickness |
0.80 |
0.70 |
1.4 |
||
8 |
Internal Bond after AWR* |
N/mm² |
0.30 |
N/A** |
0.3 |
9 |
Screw withdrawl strength |
N |
|||
a.face |
1500 |
1500 |
2000 |
||
b. Edge (> 12.0 mm) |
1250 |
1250 |
2000 |
||
10 |
Screw withdrawl strength |
Revolutions |
|||
a.Type-I |
1000 |
1000 |
1000 |
||
b.Type-II |
450 |
450 |
450 |
||
c.Type-III |
250 |
250 |
250 |
||
d.Type-IV |
75 |
75 |
75 |
||