m e d i u m
d e n s i t y
Table 2
f i b e r b o a r d
Physical and Mechanical Property Requirements for MDF (< 9.5 mm (0.375 inch) Thick) When Determined in Accordance with ASTM D 1037-06a FORMALDEHYDE EMISSION LIMITS 1,2 Table 2: Physical requirements Part Band TestMechanical Methods forproperty Hardboard ANSI A208.2 has a tiered system of emission levels allowing for MDF when determined in accordance with ASTM D 1037-06a either a maximum of 0.21 ppm or 0.11 ppm for panels
Part B (≤ 9.5 mm Thick)
thicker than 8 mm. Panels 8 mm and thinner shall conform
Grades
to either the 0.21 ppm or 0.13 ppm maximum limit. To meet
Physical and Mechanical Properties Internal Bond (IB)
Modulus of Rupture (MOR)
the needs of the market, many MDF manufacturers offer ultra-low emitting and no added urea-formaldehyde (NAUF)
Maximum Thickness Swell (TS)
N/mm2
(psi)
N/mm2
(psi)
mm
(inch)
products. There are a wide variety of products available
210
18.9
2741
0.32
46
2.2
(0.087)
today with reduced formaldehyde levels, as well as a growing
220
28.9
4192
0.54
78
2.2
(0.087)
number of non-formaldehyde alternatives. Those companies
230
28.9
4192
0.90
131
2.2
(0.087)
currently producing ultra-low emitting and NAUF products are identified in the product listings in this Guide. In addition, CPA’s Eco-Certified Composite (ECC) Program
Property Requirements Common to all MDF
(to which almost all of the North American producers
Properties
subscribe) requires emission limits no higher than the
Tolerance Limits
Panel Length or Width > 0.61 m (2 feet)
+ 2.0 mm (0.080 inch)
California Air Resources Board (CARB) Airborne ToxicPanel Average from Specified Thickness3,5 Control Measure (“CARB Rule”). Finally, various overlays and surface treatments have
+ 0.125 mm (0.005 inch)
Variance from Panel Average Thickness3,5
+ 0.125 mm (0.005 inch)
Linear Expansion (LE)3,6
< 0.33 percent
Formaldehyde Emissions
See below
been shown to significantly reduce product emissions. Formaldehyde Emissions ≤ 0.21 or ≤ .011 for MDF with a minimum thickness greater than 8mm. Formaldehyde Emis sions ≤ 0.21 ppm or ≤ 0.13 ppm for MDF with a maximum thickness ≤ 8mm For additional information about emissions, see the CPA Technical Bulletin VOC Emission Barrier Effects. n
Mdf panels can be digitally printed and Coated, offering a cost effective alternative Please see pages 80-81 for information about the companies that to solid wood components. They can be used in place 1) Grades shall also meet the requirements listed in Section 3 of this Standard. produce Medium Density Fiberboard. of expensive, hard to source exotic woods.
2) Refer to Section 4, Identification, for grade, formaldehyde emission, moisture resistance and product identification.
3) Physical and mechanical property values represent a minimum or maximum value representing 5 (lower) or 95 (up per) percentile expressions, respectively. 4) MOR and IB shall be tested in accordance with Part B of ASTM D 1037-06a. 5) Thickness tolerance values only apply to sanded panels.
RIDGE
Intr oducing I N S P I R E D
6) Linear expansion shall be measured between 50% and 80% RH in accordance to ASTM D 1037-06a. BY NORTHERN CONTOURS
Floating Shelves Doors & Drawer Fronts
Maple
Black Walnut
866-344-8132 | www.northerncontours.com/inspired
White Oak
Textured Wood Veneer | Textured Face | Internally Edgebanded
8