UMIDAX MDF-HLS medium-density fibreboard (MDF)
UMIDAX MDF-HLS used in a particularly humid environment.
Sizes of boards and quantities per pack in standard sizes :
Code:
Sizes (cm): Thickness: |
MWR
122x213 |
MWR
122x244 |
MWR
122x305 |
MWR
122x366 |
6 mm |
|
120 |
120 |
|
9 mm |
80 |
80 |
12 mm |
60 |
60 |
15 mm |
50 |
50 |
16 mm |
45 |
45 |
18 mm |
40 |
40 |
40 |
19 mm |
|
40 |
|
20 |
22 mm |
32 |
32 |
|
25 mm |
28 |
28 |
30 mm |
24 |
24 |
Technical specifications
Properties |
Test method |
Units |
CE 1161- CPD04-141
Requirements for load bearing boards used in humid conditions (MDF HLS) |
Thickness (mm) |
> 6 to 9 |
> 9 to 12 |
> 12 to 19 |
> 19 to 30 |
Thickness swelling 24h |
EN317 |
% |
12 |
10 |
8 |
7 |
Internal bond |
EN319 |
N/ mm2 |
0,80 |
0,80 |
0,75 |
0,75 |
Bending strength |
EN310 |
N/ mm2 |
34 |
32 |
30 |
28 |
Modulus of elasticity |
EN310 |
N/ mm2 |
3000 |
2800 |
2700 |
2600 |
1 choice
Internal bond after cyclic test V313 |
EN319
EN321 |
N/ mm2 |
0,30 |
0,25 |
0,20 |
0,15 |
Thickness swelling after cyclic test V313 |
EN317
EN321 |
% |
19 |
16 |
15 |
15 |
UMIDAX MDF-HLS properties
Properties
Tolerances on dimensions: |
Test method |
Units |
General requirements |
Thickness (mm) |
< 19 |
>19 |
Thickness
Length and width
Squareness
Edge straightness in length and width |
EN324-1
EN324-1
EN324-2
EN324-2 |
mm
mm/m
mm/m
mm/m |
+ / -0,2 |
+ / -0,3 |
+ / -2,0 mm/m, max + / -5,0 mm/m
+ / -2,0 mm/m
+ / -1,5 mm/m |
Tolerance on density within a board |
EN323 |
% |
+ / -7,0 |
Moisture content |
EN322 |
% |
4-11 |
Formaldehyde perforator class A |
EN120 |
mg/100g |
£ 9 |
Properties |
Test method |
Units |
Requirements for additional properties - EMB |
Thickness (mm) |
6 - 19 |
> 19 £ 10 |
> 30 |
Axial withdrawal of screws: surface
Axial withdrawal of screws: edge |
EN320
EN320 |
N
N |
1000
800 |
1000
750 |
1000
700 |
Surface soundness |
EN311 |
N/ mm2 |
1,2 |
Surface absorption |
EN382-1 |
mm |
150 mm (both sides) |
Sand content |
ISO3340 |
% |
0,05 |
European grading system for MDF classification
Property |
Symbol |
Application |
Increased moisture resistance |
H |
For use in humid environment |
| |
E |
For outdoor use |
Increased strength |
L |
Adjusting in a building |
| |
A |
For constant loads |
| |
S |
For temporary loads |
Examples :
Code |
Conditions |
Application |
MDF |
Dry |
General, interior and furniture industry |
MDF-H |
Moist |
General, interior and furniture industry |
MDF-E |
Exterior |
General |
MDF-LA |
Dry |
Constructions, constant loads |
MDF-HLS |
Moist |
Constructions, temporary loads |
Development of MDF boards is in progress. The list of new abbreviations is constantly updated with new applications and new qualities :
MDF-FR, fire retardant MDF.
Density classes :
HDF: > 800 kg/m3
MDF: > 650 kg/m3 , but < 800 kg/m3
Light MDF: > 550 kg/m3 , but < 650 kg/m3
Extra light MDF: > 450 kg/m3 , but < 550 kg/m3 |
