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Home    Wood Species    Cupiuba



Scientific name: Goupia glabra


Other common names:

Bragantina, Cachaceiro, Copiúba, Copiúva, Cupiúba, Cupiúba-rosa, Cupuba, Cutiúba, Peniqueiro, Peroba-bosta, Peroba-do-norte, Peroba-fedida, Peroba-fedorenta, Perobinha, Tento.



Commercial height: 7.60m; Diameter: (DHB) 54.3cm; (DAB) 52.1 cm; Trunk: straight; Buttress: from low to 2.70m.


General characteristics:

Heartwood/sapwood: slightly distinct to indistinct;

Color: light reddish brown (2.5YR 6/4);

Growth rings: slightly distinct;

Grain: interlocked cross;

Texture: medium;

Tangential figure: caused by prominent vascular lines;

Radial figure: in slightly prominent longitudinal bands caused by the grain;

Luster: lacking;

Odor: disagreeable;

Resistance to manual cross-cutting:

hard. Preservation



Wood is moderately easy to preserve with creosote (oil-borne) and with CCA (water-borne).


Kiln drying:

Slow (14 days) with slight tendency to medium cupping and pronounced warping Schedule used: MILD.



End-Uses: Heavy construction, light construction, boats, paneling and boxes and crates.


Test Planing Sanding Turning Boring
Number of samples 23 23 14 10
Processing Fair Easy Easy Fair
Finishing Very bad Fair Excellent Excellent
Surface Torn Fuzzy Good Good



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Phisical Properties:


Density(g/cm3) Shrinkage (%) Shrinkage Tangential/ Shrinkage Radial
Dry Green Basic 12% Tangential Radial Volumetric
0.82  1.13 0.71    8.40  4.50  13.20  1.87


Mechanical Properties:


State Static Bending Compression Janka Hardness
Modulus of rupture (kgf/cm2) Modulus of elasticity (1.000kgf/cm2) Parallel to the grain Perpendicular to the grain Parallel to the grain (kgf) End to the grain (kgf)
Maximum compression (kgf/cm2) Stress at proportional limit (kgf/cm2)
Green 916 117   485   94   778 747
Dry 1340 149 689 148 1019 830  


State Tension Cleavage strenght Shear Nail extration
Perpendicular to the grain Maximum compression (kgf/cm) Maximum compression (kgf/cm) Parallel to the grain (kgf) End to the grain (kgf)
Maximum compression (kgf/cm2)
Green 66 73 125    
Dry 42 56 148    


Source: Laboratory of Forest Products - IBAMA-Brasília-Brazil


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