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AMERICAN YELLOW BIRCH

V. Ryan 2008

 

Betula alleghaniensis
Family: Betulaceae

Commercial names : Hard Birch, Betula Wood (Canada); Canadian Yellow Birch, Quebec Birch, American Birch (UK); Grey, Silver or Swamp Birch USA.

Distribution: Canada and USA.
 
 
 


General Description: There is a wide range of colour differences in unselected parcels, but when stained will not show a marked difference between light yellow sap and reddish brown heartwood. It is straight, close-grained, the texture is fine and even. Weight about 710 kg/m3 (44lb/ft3); specific gravity 0.71.

Mechanical Properties: The wood bending classification is very good, with high bending strength, crushing strength and resistance to shock loads.

Working Properties: The wood works fairly easily with only a moderate dulling effect on cutters and finishes smoothly if straight grained. Curly grained material, or disturbed grain around knots requires a reduced cutting angle of 15. It glues well with care and takes stain and polish extremely well. Its uniform, dense surface, free from large groups of pores, makes it unequalled as a base for white enamelling and guarantees a permanent smooth finish.

Durability: Liable to attack by common furniture beetle. Moderately resistant to preservative treatment, but the sapwood is permeable. The wood is perishable.

Uses: Furniture, high grade joinery and flooring. Turnery, bobbins, shuttles, spools, cooperage, upholstery frames, high-grade plywood manufacture.

 

 
 
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