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Origin: Brazil
Family – Fabaceae
Scientific name
Dipteryx spp.
Trade and local names
Cumaru (Port.); Tonka (Fr. e Ing.); Kumaru; Muimapagé.
Physical properties
|
Density at 12% (kg/m³) |
1070 |
Very heavy |
|
Tangential Radial
Shrinkage (%) |
7.9
5.5 |
Medium
High |
Mechanical properties
|
Static bending
Breaking strength (N/mm²) |
199 |
High |
|
Axial compression
Breaking strength (N/mm²) |
105 |
High |
|
Tensile strength
Breaking strength (N/mm²) |
7.6 |
Medium |
|
Hardness (kN) |
9.9 |
High |
Durability
Very durable. Highly resistant to fungi and wood borer insect attack.
Technological properties
• Workability: hard cut.
• Seasoning: slow. Some risks of warping and splinting.
• Finish: allows good finishes.
• Gluing: delicate.
Main uses
• Flooring
|
Floor traffic |
|
Light(residential) |
Normal
(public buildings) |
Heavy
(sports facilities) |
|
x |
x |
x | • Interior woodwork: door and window joinery; stairways; panelling, lining, interior furnishing and decoration.
• Furniture.
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