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Technical Data

Parameters according to the EN 300:2000 standard


1. General requirements for all board types

Nr Property Testing method Requirements Thickness range
12)3) Maximum dimensional tolerances: thickness (sanded) boards and between; thickness (non-sanded) boards and between; length and width; EN 324-1 0.3 mm 0.8 mm 3.0 mm
22)3) Edge straightness tolerance EN 324-2 1.5 mm/m
32)3) Squareness tolerance EN 324-2 2.0 mm/m
42) Moisture content OSB 1, OSB 2, OSB 3, OSB 4 EN 322 od 2 do 12% od 5 do 12%
53) Allowable density tolerance in relation to the average density inside board EN 323 10%
6 Formaldehyde content – Class E1  EN 120 ≤ 8mg / 100 g total dry matter

2) Specific applications of OSB may require other tolerances. See applicable standards.
3) The values apply for moisture in the material at 65% RH and 20oC.
 


2. Requirements concerning boards for general applications and interior finishing (including furniture) used in dry conditions

* Requirements for specific mechanical properties and swelling.

Board type: SWISS KRONO OSB/1: Properties Testing method Unit of measurement Requirements Thickness range
  6 to 10 >10 i <18 18 to 25
Bending strength: major axis EN 310 N/mm2 20 18 16
Bending strength: lateral axis EN 310 N/mm2 10 9 8
Modulus of elasticity: major axis EN 310 N/mm2 2500 2500 2500
Modulus of elasticity: lateral axis EN 310 N/mm2 1200 1200 1200
Tensile strength perpendicular to the board plane EN 319 N/mm2 0.30 0.28 0.26
Thickness swelling after 24 hrs EN 317 % 25 25 25

3. Requirements concerning boards for carrying applications, used in dry conditions

* Requirements for specific mechanical properties and swelling

Board type: SWISS KRONO OSB/2: Properties Testing method Unit of measurement Requirements Thickness range
  6 to 10 >10 i <18 18 to 25
Bending strength: major axis EN 310 N/mm2 22 20 18
Bending strength: lateral axis EN 310 N/mm2 11 10 9
Modulus of elasticity: major axis EN 310 N/mm2 3500 3500 3500
Modulus of elasticity: lateral axis EN 310 N/mm2 1400 1400 1400
Tensile strength perpendicular to the board plane EN 319 N/mm2 0.34 0.32 0.30
Thickness swelling after 24 hrs EN 317 % 20 20 20

4. Requirements concerning boards for carrying applications, used in humid conditions

* Requirements for specific mechanical properties and swelling

Board type: SWISS KRONO OSB/3: Properties Testing method Unit of measurement Requirements Thickness range
  6 to 10 >10 i <18 18 to 25
Bending strength: major axis EN 310 N/mm2 22 20 18
Bending strength: lateral axis EN 310 N/mm2 11 10 9
Modulus of elasticity: major axis EN 310 N/mm2 3500 3500 3500
Modulus of elasticity: lateral axis EN 310 N/mm2 1400 1400 1400
Tensile strength perpendicular to the board plane EN 319 N/mm2 0.34 0.32 0.30
Thickness swelling after 24 hrs EN 317 % 15 15 15

5. Requirements concerning moisture resistance

Board type: SWISS KRONO OSB/3: Properties Testing method Unit of measurement Requirements Thickness range
  6 to 10 >10 i <18 18 to 25
Bending strength after cyclic test – major axis EN 321 + EN 3108) N/mm2 9 8 7
Option 17) tensile strength perpendicular to the board plane, after cyclic test EN 321 EN 319 N/mm2 0.18 0.15 0.13
Option 27) tensile strength perpendicular to the board plane, after boiling EN 1087-19) N/mm2 0.15 0.13 0.12
7) The selection of methods should be treated as temporary until appropriate methods are developed for the board set
8) Bending strength after cyclic test is calculated using the thickness measured after cyclic test
9) EN 1087-1 applies, taking into account the modified method in Annex A.

6. Requirements concerning boards for carrying applications under heavy loads, used in humid conditions

* Requirements for specific mechanical properties and swelling

Board type: SWISS KRONO OSB/4: Properties Testing method Unit of measurement Requirements Thickness range
  6 to 10 >10 i <18 18 to 25
Bending strength: major axis EN 310 N/mm2 30 28 26
Bending strength: lateral axis EN 310 N/mm2 16 15 14
Modulus of elasticity: major axis EN 310 N/mm2 4800 4800 4800
Modulus of elasticity: lateral axis EN 310 N/mm2 1900 1900 1900
Tensile strength perpendicular to the board plane EN 319 N/mm2 0.50 0.45 0.40
Thickness swelling after 24 hrs EN 317 % 12 12 12

7. Requirements concerning moisture resistance

Board type: SWISS KRONO OSB/4: Properties Testing method Unit of measurement Requirements Thickness range
  6 to 10 >10 i <18 18 to 25
Bending strength after cyclic test – major axis EN 321 + EN 3108) N/mm2 15 14 13
Option 17) tensile strength perpendicular to the board plane, after cyclic test EN 321 EN 319 N/mm2 0.21 0.17 0.15
Option 27) tensile strength perpendicular to the board plane, after boiling EN 1087-19) N/mm2 0.17 0.15 0,13
7) The selection of methods should be treated as temporary until appropriate methods are developed for the board set
8) Bending strength after cyclic test is calculated using the thickness measured after cyclic test
9) EN 1087-1 applies, taking into account the modified method in Annex A.

8. Thermal conductivity of OSB/3

  Mean density Ρ Kg/m 3 Thermal conductivity
coefficient λ W(m -K )
Standard
SWISS KRONO OSB/3 650 0,13 EN 12664

9. Fire classification

  EN standard Minimum
density
Kg/m3
Minimum
thickness
mm
Class (excluding floors) Floor class Standard
SWISS KRONO OSB/3 EN 300 600 9 D-s2, d0 - EN-13501-1