Iroko

  • Clorophora excelsa Benth.&Hooff.; C. regia A. Chev
  • English: Iroko, African Teak
  • Africa.

Description

&;8226; Sapwood: yellowish white colour.
&;8226; Heartwood: yellowish brown that changes into reddish grey with the lights effects.
&;8226; Fiber: straight, usually slightly intertwined.
&;8226; Grain: medium size to rough.

Applications

&;8226; Exterior furniture, green areas and urban areas.
&;8226; Interior carpentry, doors, stairs, paneling, molding, baseboad, friezes, platform.
&;8226; Exterior carpentry, doors and windows.
&;8226; Interior and exterior carpentry.
&;8226; Decorative panels.
&;8226; Naval construction.

Capacity of being impregnated

&;8226; Sapwood: capable of being impregnated.
&;8226; Heartwood: no capable of being impregnated.

Mechanization

&;8226; Sawing process: no difficulties except certain abrasivity due to the chalky deposits.
&;8226; Drying process: medium to high speed. Little risk of deformation and crack formation.
&;8226; Planing process: generally easy in exception of its abrasivity and the risk of repelling when it has intertwined fibers.
&;8226; Gluing process: difficulties with the casein glues.
&;8226; Nailing and screwing process: no difficulties.
&;8226; Finish: It has tannins that can inhibit oxidant varnishes (such as poliurethan and others) ,drying process.

Physical properties

&;8226; Apparent density at 12% humidity 650 kg/m3 semi-heavy wood.
&;8226; Dimensional stability
- Volumetric contraction coefficientm 0.36 % stable wood.
- Relation between contractions 1.57% no tendency to deformity.
&;8226; Hardness (Chaláis-Meudon) 3.9 semi-hardwood.

Mechanical properties

&;8226; Resistance to static flexion 955 kg/cm2.
&;8226; Elasticity module 105,000 kg/cm2.
&;8226; Resistance to compression 540 kg/cm2.
&;8226; Resistance to parallel traction 800 kg/cm2.

Observations

&;8226; It is recommended not to use the sapwood.
&;8226; It is wrongly called teak in certain areas.
&;8226; It presents a wide range of colours at the time of sawing that are later homogenized.


Aviso

Aviso