WISA-Birch is a high quality, multipurpose product for various applications where an excellent strength to weight ratio is needed. Strong standard construction can be optimised even further by using strength oriented construction when needed. Due to its light, smooth and even surface WISA-Birch offers an optimal base for different overlaying methods.
- Excellent strength/weight ratio
- Possibility to customise according to your needs
- Light, smooth and hard surface
- Wide size and thickness range available with strict tolerances
- Vehicle floors
- Joinery and shop fitting
- Laminating industry
- High end packaging
Panels have clean sanded wooden surfaces.
Available surface qualities S (II), BB(III) or WG(IV)
For detailed info see document about surface qualities.
S and BB are for end use where sound surface appearance is required.
WG is for end use where the technical properties of birch are needed.
Generally, panels have different appearance on each surface,
eg. quality is defined S/WG.
Panels are available in main standard sizes.
Size along surface grain direction: 1220, 1250, 1500, 1525 mm
Size cross surface grain direction: 2440, 2500, 3000, 3050 mm
Other sizes, tailor made pre-cut panels and cnc-machined components according to customer drawings at request. PEFC/02-31-112 Promoting Sustainable Forest Management www.pefc.
Thicknesses and technical properties
|Nominal thickness (mm)||Tolerance min – max (actual mm)||Weight about kg/m2||Strength in bending fm II (N/mm2)*||Modulus of elasticity
Em II (N/mm²)*
|6.5||6.1 – 6.9||4.4||50.9||12 735|
|9||8.8 – 9.5||6.1||45.6||11 394|
|12||11.5 – 12.5||8.2||42.9||10 720|
|15||14.3 – 15.3||10.2||41.3||10 316|
|18||17.1 – 18.1||12.2||40.2||10 048|
|21||20.0 – 20.9||14.3||39.4||9 858|
|24||22.9 – 23.7||16.3||38.9||9 717|
|27||25.2 – 26.8||18.4||38.4||9 607|
|30||28.1 – 29.9||20.4||38.1||9 519|
* 95% of panels have better strength properties
Designed strength properties and thicknesses available at request