Wengue

Scientific name: Scientific name: Millettia laurentii De Wild.; M. stuhlmannii Taub.

Geographic origin: Africa

Description

  • Sapwood: yellowish white.
  • Heartwood: Dark grey to chocolate grey.
  • Fiber: Straight.
  • Grain: medium size to rough

Wengue

Capacity of being impregnated

  • Sapwood: Medium capacity of being impregnated
  • Heartwood: No capable of being impregnated

Mechanization

  • Sawing process: ordinary difficulties arise from hardness and abrasability
  • Drying process: Slow. Low risk of deformation and high risk of crack formation.
  • Planing process: Difficulties arise from hardness, abrasability.
  • Gluing process: Tannins hamper proper adherence.
  • Nailing and screwing process: pre-drilling is recommended due to hardness.
  • Finish: No particular difficulties arise.

Physical properties

  • Apparent density at 12% humidity
  • 0.85 kg/m3 very heavy wood
  • • Density 450kg/m3
  • Dimensional stability
  • Volumetric contraction coefficient
  • 0.54 % very nervous wood
  • Relation between contractions
  • 1.6% no tendency to deformity
  • Hardness (Chaláis-Meudon)
  • 8.1 very hard wood

Wengue

Mechanical properties

  • Resistance to static flexion 1,800 kg/cm3
  • Elasticity module 180,000 kg/cm3
  • Resistance to compression 800 kg/cm3

Wengue

Observations

Wengue