1、 Reference number ISO 16894:2009(E) ISO 2009INTERNATIONAL STANDARD ISO 16894 First edition 2009-11-15 Wood-based panels Oriented strand board (OSB) Definitions, classification and specifications Panneaux base de bois Panneaux de lamelles minces, longues et orientes (OSB) Dfinitions, classification e
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7、ISO 2009 All rights reserved iiiContents Page Foreword iv 1 Scope1 2 Normative references1 3 Terms, definitions and abbreviated terms2 3.1 Terms and definitions .2 3.2 Abbreviated terms .3 4 Classification of the OSB3 5 General requirements of all OSB types.3 6 Requirement values 4 7 Requirements fo
8、r general purpose non-load-bearing OSB for interior fitments for use in dry conditions (Type OSB GP-REG)4 8 Requirements for load-bearing OSB for use in dry conditions (Type OSB LB-REG) 4 9 Requirements for load-bearing OSB for use in humid conditions (Type OSB LB-MR) .5 9.1 General .5 9.2 Mechanica
9、l and swelling properties5 9.3 Moisture resistance.6 10 Requirements for heavy duty load-bearing OSB for use in humid conditions (Type OSB HLB-MR) .6 10.1 General .6 10.2 Mechanical and swelling properties7 10.3 Moisture resistance.7 11 Marking.8 Annex A (normative) Calculation of the 5th percentile
10、 and 95th percentile values.9 Annex B (normative) Alternative moisture cycle for moisture resistance11 Annex C (normative) Supplementary properties.12 Bibliography13 ISO 16894:2009(E) iv ISO 2009 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide fede
11、ration of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that commi
12、ttee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordan
13、ce with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires
14、approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 16894 was prepared by Technical Co
15、mmittee ISO/TC 89, Wood-based panels, Subcommittee SC 2, Particle boards. INTERNATIONAL STANDARD ISO 16894:2009(E) ISO 2009 All rights reserved 1Wood-based panels Oriented strand board (OSB) Definitions, classification and specifications 1 Scope This International Standard gives definitions, classif
16、ications and specifications for the manufacturing requirements of oriented strand board (OSB). The values given are used to classify OSB into one of four types, namely OSB type GP-REG, LB-REG, LB-MR or HLB-MR. The values are related to panel properties, but are not characteristic values to be used f
17、or design purposes. NOTE 1 When OSB characteristic strength and stiffness values are required for design purposes, the properties can be established based on testing in accordance with ISO 16572, ASTM D7033-07 or EN 789. NOTE 2 For specific load-bearing applications, such as walls, roofs, floors, I
18、joist webs, the load-bearing OSB can meet the specific performance requirements for that intended application, in addition to the requirements of this International Standard. NOTE 3 Information on supplementary properties is given in Annex C. NOTE 4 This International Standard is the reference for O
19、SB classifications and specifications. Other regional or national standards covering the performance of wood structural panels are given in the bibliography. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only t
20、he edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 9426, Wood-based panels Determination of dimensions of panels ISO 9427, Wood-based panels Determination of density ISO 12460-1, Wood-based panels Determination of f
21、ormaldehyde release Part 1: Formaldehyde emission by the 1-cubic-metre chamber method ISO 16572, Timber structures Wood-based panels Test methods for structural properties ISO 16978, Wood-based panels Determination of modulus of elasticity in bending and of bending strength ISO 16979, Wood-based pan
22、els Determination of moisture content ISO 16983, Wood-based panels Determination of swelling in thickness after immersion in water ISO 16984, Wood-based panels Determination of tensile strength perpendicular to the plane of the panel ISO 16987, Wood-based panels Determination of moisture resistance
23、under cyclic test conditions ISO 16998, Wood-based panels Determination of moisture resistance Boil test ISO 17064:2004, Wood-based panels Fibreboard, particleboard and oriented strand board (OSB) Vocabulary ISO 16894:2009(E) 2 ISO 2009 All rights reserved3 Terms, definitions and abbreviated terms F
24、or the purposes of this document, the terms and definitions given in ISO 17064 and the following apply. 3.1 Terms and definitions 3.1.1 oriented strand board OSB multi-layered board made from strands of wood of predetermined shape and thickness, together with a binder, by the application of heat and
25、 pressure, with the strands in the external layers aligned and parallel to the board length or width NOTE Adapted from ISO 17064:2004, definition 2.3. 3.1.2 major axis direction in the plane of the board, in which the bending properties have the higher values 3.1.3 minor axis direction in the plane
26、of the board at right angles to the major axis 3.1.4 general purpose GP non-load-bearing applications, interior fitments and furniture 3.1.5 load-bearing LB denotes a structural or designed application, such as building elements or use as a component in a structural element such as the webs of I-joi
27、sts NOTE Examples of building elements are walls, roof and floor. 3.1.6 heavy duty load-bearing HLB special load-bearing grade of OSB with increased properties for more demanding applications 3.1.7 strand manufactured wood element of a predetermined shape with an average length of more than 50 mm an
28、d average thickness less than 2 mm 3.1.8 regular REG product suitable for applications in dry conditions 3.1.9 moisture resistant MR product suitable for applications involving humid conditions ISO 16894:2009(E) ISO 2009 All rights reserved 33.2 Abbreviated terms The following abbreviated terms appl
29、y. regular REG for dry conditions only moisture resistant MR for humid conditions load bearing LB structural or load bearing general purpose GP for applications not requiring the specific properties of furniture or load-bearing grades heavy duty load-bearing HLB for humid conditions 4 Classification
30、 of the OSB Four types of board are classified and are distinguished as follows: a) OSB GP-REG general purpose non-load-bearing OSB for interior fitments for use in dry conditions; b) OSB LB-REG load-bearing OSB for use in dry conditions; c) OSB LB-MR load-bearing OSB for use in humid conditions; d)
31、 OSB HLB-MR heavy duty load-bearing OSB for use in humid conditions. 5 General requirements of all OSB types All OSB types shall comply with the general requirements listed in Table 1 when dispatched from the producing factory. Table 1 General requirements for all OSB types No. Property Test method
32、Requirements ISO 9426 0,3 mm 0,8 mm 1 Tolerances on nominal dimensions thickness (sanded) within and between panels thickness (unsanded) within and between panels length and width 3,0 mm 2 Edge straightness tolerance ISO 9426 1,5 mm/m 3 Squareness tolerance ISO 9426 2,0 mm/m 4 Moisture content ISO 1
33、6979 2 % to 12 % 5 Tolerance on the mean density within a board ISO 9427 15 % Formaldehyde release ab 6 emission value ISO 12460-1 0,124 or less mg/m 3aThere are other tests which may be used to measure formaldehyde content or release (e.g. ISO 12460-3, ISO 12460-4 and EN 120, see Bibliography). The
34、se may be used, provided a correlation is established with the reference method, ISO 12460-1. bOSB manufactured with phenolic and/or isocyanate resins have a history of low formaldehyde emission results, which meets the requirements of all International Standards. ISO 16894:2009(E) 4 ISO 2009 All ri
35、ghts reserved6 Requirement values The values given in Tables 2 to 7, and determined by the relevant test methods as listed in Clauses 7 to 10, shall be used for factory production control (FPC) purposes only and shall not be used in design calculations. With the exception of the moisture resistance
36、requirements in Tables 5 and 7 and swelling in thickness requirements in Tables 2, 3, 4 and 6, the values given in Tables 2 to 7 are characterized by moisture content in the material corresponding to a temperature of 20 C and a relative humidity of the surrounding air of 65 %. The values for the moi
37、sture resistance requirements in Tables 5 and 7 and swelling in thickness requirements in Tables 2, 3, 4 and 6 are characterized by moisture content in the material before the treatment corresponding to a temperature of 20 C and a relative humidity of the surrounding air of 65 %. The requirements in
38、 Tables 2 to 7 shall be met by the 5th percentile values (95th percentile values in the case of swelling in thickness), based on the mean values for individual panels and calculated in accordance with Annex A. In the case of swelling in thickness they shall be equal to or less than the values in the
39、 tables and in the case of all other properties, they shall be equal to or greater than the values given in the tables. 7 Requirements for general purpose non-load-bearing OSB for interior fitments for use in dry conditions (Type OSB GP-REG) In addition to the requirements specified in Clause 5, thi
40、s clause specifies the requirements for general purpose OSB, and OSB for interior fitments (including furniture), for use in dry conditions. Therefore, OSB of this type shall comply with the requirements given in Tables 1 and 2. For definitions of values given in Table 2, see Clause 6. Table 2 Gener
41、al purpose non-load-bearing OSB for interior fitments (including furniture) for use in dry conditions Requirements for specified mechanical and swelling properties Requirement Board type OSB GP-REG Board thickness range nominal mm Property Test method Unit 6 to 10 10 and 18 18 to 25 Bending strength
42、 major axis ISO 16978 MPa 20 18 16 Bending strength minor axis ISO 16978 MPa 10 9 8 Modulus of elasticity in bending major axis ISO 16978 MPa 2 500 2 500 2 500 Modulus of elasticity in bending minor axis ISO 16978 MPa 1 200 1 200 1 200 Internal bond ISO 16984 MPa 0,30 0,28 0,26 Swelling in thickness
43、 24 h ISO 16983 % 25 25 25 8 Requirements for load-bearing OSB for use in dry conditions (Type OSB LB-REG) In addition to the requirements specified in Clause 5, this clause specifies the requirements for load-bearing OSB for use in dry conditions. Therefore, OSB of this type shall comply with the r
44、equirements given in Tables 1 and 3. For definitions of values given in Table 3, see Clause 6. ISO 16894:2009(E) ISO 2009 All rights reserved 5Table 3 Load-bearing OSB for use in dry conditions Requirements for specified mechanical and swelling properties Requirement Board type OSB LB-REG Board thic
45、kness range nominal mm Property Test method Unit 6 to 10 10 and 25 to 32 32 to 40 Bending strength major axis ISO 16978 MPa 22 20 18 16 14 Bending strength minor axis ISO 16978 MPa 11 10 9 8 7 Modulus of elasticity in bending major axis ISO 16978 MPa 3 500 3 500 3 500 3 500 3 500 Modulus of elastici
46、ty in bending minor axis ISO 16978 MPa 1 400 1 400 1 400 1 400 1 400 Internal bond ISO 16984 MPa 0,34 0,32 0,30 0,29 0,26 Swelling in thickness 24 h ISO 16983 % 20 20 20 20 20 If it is known by the purchaser that the OSB is intended for specific use in flooring, walls or roofing, additional applicab
47、le performance requirements in the reference standards should be consulted (see Bibliography), as these additional requirements can apply. 9 Requirements for load-bearing OSB for use in humid conditions (Type OSB LB-MR) 9.1 General In addition to the requirements specified in Clause 5, this clause s
48、pecifies the requirements for load-bearing OSB for use in humid conditions. Therefore, OSB of this type shall comply with the requirements of Tables 1, 4 and 5. For definitions of values given in Tables 4 and 5, see Clause 6. 9.2 Mechanical and swelling properties Table 4 Load-bearing OSB for use in
49、 humid conditions Requirements for specified mechanical and swelling properties Requirement Board type OSB LB-MR Board thickness range nominal mm Property Test method Unit 6 to 10 10 and 25 to 32 32 to 40 Bending strength major axis ISO 16978 MPa 22 20 18 16 14 Bending strength minor axis ISO 16978 MPa 11 10 9 8 7 Modulus of elasticity in bending major axis ISO 16978 MPa 3 500 3 500 3 500 3 500 3 500 Modulus of elasticity in bending minor axis ISO
