Tatajuba

Scientific name: Bagassa guianensis Aubl.; B. tiliaefolia R. Ben.

Other names: English: Tatajuba

Geographic origin: South America

Description

&;8226; Sapwood: cream-coloured.
&;8226; Heartwood: yellow to dark brown with the light effects.
&;8226; Fiber: Straight, generally intertwined.
&;8226; Grain: medium size to rough.
&;8226; Characteristic defects: Growth tensions

Tatajuba

Applications

&;8226; Interior furniture and cabinet work and exterior. Turned furniture.
&;8226; Interior carpentry, doors, stairs, paneling, molding, baseboad, friezes, parquet flooring.
&;8226; Exterior carpentry, doors and windows.
&;8226; Interior and exterior carpentry

Capacity of being impregnated

&;8226; Sapwood: Medium capacity of being impregnated
&;8226; Heartwood: Low capacity of being impregnated

Mechanization

&;8226; Sawing process: ordinary difficulties arise from hardness and the possible irritations produced by its powder. Risk of deformations due to internal tensions that produce radial quartering despieces radiales.
&;8226; Drying process: Medium to high speed. Low risk of deformation and crack formation.
&;8226; Planing process: Difficulties arise from hardness and risk of repelling on pieces of intertwined fibers. Slow mechanisation is recommended
&;8226; Gluing process: No difficulties.
&;8226; Nailing and screwing process: pre-drilling is recommended due to hardness.
&;8226; Finish: No particular difficulties arise

Physical properties

&;8226; Apparent density at 12% humidity 795 kg/m3 heavy wood
&;8226; Dimensional stability
- Volumetric contraction coefficient 0.35 % stable wood.
- Relation between contractions 1.45% no tendency to deformity
&;8226; Hardness (Chaláis-Meudon) 6.5 hardwood

Tatajuba

Mechanical properties

&;8226; Resistance to static flexion 1,350 kg/cm2 &;8226; Elasticity module 180,000 kg/cm2
&;8226; Resistance to compression 780 kg/cm2

Tatajuba