Sucupira

Scientific name: Diplotropis purpurea Amsh.

Geographic origin: South America

Description

  • Sapwood: greyish white to yellowish white.
  • Heartwood: dark grey to reddish grey.
  • Fiber: Straight, frequently intertwined.
  • Grain: medium size

Capacity of being impregnated

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

Mechanization

  • Sawing process: Common difficulties arise from hardness and abrasability
  •  Drying process: Medium to high speed. Low risk of deformation and crack formation.
  • Planing process: Difficuties due to hardness, abrasability and risk of repelling on pieces of intertwined fibers. Slow mechanisation is recommended
  • 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 910 kg/m3 very heavy wood
  • Dimensional stability
  • - Volumetric contraction coefficient 0.44 % varies from stable wood to nervous wood
  • - Relation between contractions 1.5% no tendency to deformity
  • Hardness (Chaláis-Meudon) 8.3 very hard wood

Sucupira

Mechanical properties

  • Resistance to static flexion 1,400 g/cm2
  • Elasticity module 180,000 kg/cm2
  • Resistance to compression 850 kg/cm2

Sucupira

Observations

Sucupira