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Species' technical and commercial specifications
IROKO
Scientific name :  Ghlophora excelsa
Family : Moraceae
 
 
 
Generalities
  • Sapwood : differentiated
    • yellowih white 5 to 7.5 cm
  • Core wood :
    • Colour : yellow-brown to dark brown (highly variable)
    • Grain : slight cross-grain 
    • Texture : medium to coarse 
    • Star-shaking : fine
 
Transformation and process
  • Solid wood
  • Sawing  : Easy
    • Blunting effect : average 
  • Drying : Average
    • déformation risks  : minimal
    • Cracking risks :  minimal 
  • Machining  : difficult due to cross-grain
    • special tooling required (calcium carbonate deposits)
  • Bending : moderate 
  • Glueing : Good 
  • Nailing : Holding well
  • Finish : good but pore
    • filling necessery
  • Veneering : sliciling-economical
 
Technical characteristics
  • Density, green : 1000-1100
  • Density, 12% (kg/m3) D12 = (heavy) 650
  • Volume shrinkage at 1% humidity (V%) = 0.44
  • Linear shrinkage, % of tangential total T% = 5.5
  • Linear shrinkage, % of  radial total R% = 3.5
  • Breaking point under axial compression (N/mm2)  C12 = 57
  • Breaking point under static  flexion (N/mm2) F12 = 118
  • Elasticity module under traction (N/mm2) E12 = 9900
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