MDF / HDF

Medium Density Fiberboard

Product Name M.D.F.
Grade A Grade
Density 720~750kg/m3 (8~25mm), 800~830kg/m3 (2.5~6mm) or as agreed
Low Material Poplar / Ash / MLH
Glue Type E0 / E1 / E2
Color of Fiberboard Regular Color / Light Color
Final Sanding # #150 / #180 Grit
Thickness 2.5 / 2.7 / 2.75 / 3 / 4 / 4.5 / 4.75 / 5 / 6 / 8 / 9
10 / 11 / 12 / 14 / 15 / 16 / 17 / 17.5 / 18 / 20 / 25mm
Size(mm) 915 x 2135 (3’x 7’) / 915 x 2735 (3’x 9’) / 915 x 3660 (3’x 12’)
1220 x 2440 (4’x 8’) / 1830 x 2440 (6’x 8’) / 1830 x 3660 (6’x 12’)
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Physical Test of MDF Type 25
A) Physical Test National Standard of China
(GB/T11718-1999)		 National Standard of Korea
(KS F 3200)		 Our  Exporting Standard of MDF
Density: 450-880kg/M3 350-850kg/M3 720-750kg/M3
Moisture Contents: 4-13% 5-13% 6-8%
Expansion ratio in thickness due to water absorption: below 10% below 12% below 12%
Internal Bond Strength: 0.55MPa Up 0.4 N/mm2 Up 0.55MPa Up
Bending Strength (Modulus of Rupture): 20.0 Mpa Up 25.0 Mpa Up 25.0 Mpa Up
Bending Strength under wet condition: 10.0 Mpa Up 12.5 Mpa Up 12.5 Mpa Up
Modulus of Elasticity: 2,200 Mpa Up 2,000 N/mm2 Up 2,200 Mpa Up
Screw Holding(Surface): 1,000 N up 700 N up 1,000 N up
Screw Holding(Edge): 800 N up 350 N up 800 N up
Formaldehyde Emission: E0: ≤ 3mg/100g
E1: ≤ 9mg/100g
E2: ≤ 30mg/100g		 E0: ≤ 0.5mg/liter
E1: ≤ 1.5mg/liter
E2: ≤ 5.0mg/Iiter		 E0: ≤ 3mg/100g
E1: ≤ 9mg/100g
E2: ≤ 30mg/100g
B) Measurement National Standard of China National Standard of Korea Our  Exporting Standard of MDF
Tolerance of Thickness: ± 0.2 mm ± 0.4 mm ± 0.2 mm
Tolerance of Size: ± 2.0 mm/M ± 3.0 mm ± 2.0 mm
Diagonal Tolerance: Max. 6.0 mm Max. 2.0 mm/M Max. 3.0 mm
Warping: Max. 5.0 mm/M 0.1% (1.22mm against 1,220mm width, 2.44mm against 2440mm length) 0.1%
Straight of Edge: ± 1.5mm/M ± 1.5 mm ± 1.0mm