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Timbauba
Timbauba (Enterolobium schomburgkii)

Family: Leguminosae

Common names: Acacia franc, Acadia franc, Angelim, Angelim orelha de negro, Angelium, Batibatra, Bois la morue, Bougou bati batra, Brownuya, Coumarouna odorata, Curarina, Fava de rosoa, Harino, Hevio, Jebio, Kabbes, Kadiouchi, Makka, Menudito, Orelha de macaco, Poirier, Tamaren prokoni, Timbauba, Timbo, Timbo de mata, Timbo rana, Timborana, Titim batibatra, Vinhatico

Distributed in: Bolivia, Brazil, French Guiana, Guyana, Peru, Suriname, Venezuela (Central America, Latin America)

Distribution overview: Central America and southward to the Guianas and northern Brazil, Peru and Bolivia (including Panama and Venezuela); preferring non-inundated sandy soil.

Common uses: Agricultural implements, Bedroom suites, Boat building: framing, Building construction, Building materials, Cabin construction, Cabinetmaking, Chairs, Chests, Concealed parts (Furniture), Concrete formwork, Construction, Crossties, Desks, Dining-room furniture, Domestic flooring, Dowell pins, Dowells, Drawer sides, Factory construction, Factory flooring, Fine furniture, Floor lamps, Flooring, Furniture , Furniture components, Furniture squares or stock, Furniture, Handles, Hatracks, Heavy construction, Joinery, Kitchen cabinets, Light construction, Living-room suites, Mine timbers, Office furniture, Paneling, Parquet flooring, Radio - stereo - TV cabinets, Railroad ties, Rustic furniture, Shafts/Handles, Stools, Sub-flooring, Tables , Tool handles, Utility furniture, Vehicle parts, Veneer: decorative

Product sources: The ITTO reports that timber from this species is produced at a low rate. Export potential is rated as fair.

Environment profile: Status unknown in many of its growth areas

Tree size: Trunk diameter is 200-250 cm

Colors: the heart isYellow to golden-yellow to orange, Yellowish brownand the sapwoodWhite to yellow, Yellow.The grain isWavy, the textureMediumand the lusterSlightly lustrous

Natural durability: Very durable, Very durable

Odor: No specific smell or taste

LightInduced Color Change: Darker

Kiln Schedules: Kiln Drying Rate (in days) is rather slow

Kiln Drying Rate: Very slow (>28 days for boards < 32 mm, to >84 days for boards >= 63 mm)

Drying Defects: Slight twist/warp, Splitting

Ease of Drying: Slowly

Tree Identification: Bole/stem form is straight

Comments: General finishing qualities are rated as good The timber is similar in properties to the African species Afrormosia (Pericopsis elata )

Blunting Effect: Moderate effect

Boring: Moderately easy

Carving: Fairly Difficult to Very Difficult

Cutting Resistance: Fairly Difficult to Very Difficult to saw

Gluing: Surface Preparation

Mortising: Fairly Difficult to Very Difficult

Moulding: Fairly Difficult to Very Difficult

Movement in Service: Fairly Difficult to Very Difficult

Nailing: Good nailing properties, Pre-Boring Recommended

Planing: Very Good to Excellent

Resistance to Impregnation: Sapwood is treatable

Response to hand tools: Responds Poorly

Routing recessing: Fairly Difficult to Very Difficult

Sanding: Very Good to Excellent Results

Screwing: Fair to Good Results, Pre-boring recommended; Turning: Very Good to Excellent Results

Painting: Takes paint easily after pre-treatment; Polishing: Very good; Varnishing: Satisfactory ;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity 0,74
Density 913 kg/m3
Bending Strength 1085 1587 kg/cm2
Crushing Strength 122 126 kg/cm2
Hardness 1038 kg
Impact Strength cm
Shearing Strength 142 kg/cm2
Stiffness 177 202 1000 kg/cm2
Tangential Shrinkage 9 %
Radial Shrinkage 3 %
Weight 897 641 kg/m3
Maximum Load 0,7 0,98 cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 15432 22575 psi
Crushing Strength 1742 1798 psi
Density 57 lbs/ft3
Hardness 2290 lbs
Maximum Crushing Strength 7226 10811 psi
Shearing Strength 2027 psi
Stiffness 2519 2886 1000 psi
Work to Maximum Load 10 14 inch-lbs/in3
Specific Gravity 0.74
Weight 56 40 lbs/ft3
Radial Shrinkage 3 %
Tangential Shrinkage 9 %
Volumetric Shrinkage 14 %

Max. crushing strength = high
Bending strength (MOR) = high
Modulus of Elasticity (stiffness) = high
Hardness (side grain) = hard
Density (dry weight) = 61-67 lbs/cu.ft
Density (dry weight) = 53-60 lbs/cu. ft
Density (dry weight) = 46-52 lbs/cu. ft.
Density (dry weight) = 38-45 lbs/cu. ft.
Shrinkage, Tangential = fairly large
Shrinkage, Radial = small
Shrinkage, Tangential = large
Shrinkage, Radial = moderate
Shearing strength (parallel to grain) = medium
Modulus of Elasticity (stiffness) = medium
Bending strength (MOR) = very high
Bending strength (MOR) = medium
Shrinkage, Radial = fairly large
Shearing strength (parallel to grain) = very low
Shearing strength (parallel to grain) = low
Shearing strength (parallel to grain) = high
Modulus of Elasticity (stiffness) = low
Max. crushing strength = medium
Max. crushing strength = low
Hardness (side grain) = medium

Bois et Forets des Tropiques,1985,Acacia franc - Enterolobium schomburgkii Benth.,Bois et Forets des Tropiques Vol. 207Bois et Forets des Tropiques,1991,Acacia franc - Enteroloblium schomburgkii Benth.,Bois et Forets des Tropiques Vol.230 pp.53-56Chichignoud, M., G. Deon, P. Detienne, B. Parant and P. Vantomme.1990.Tropical Timber Atlas of Latin America.International Tropical Timber Organization (ITTO, Centre Technique Forestier Tropical, Division of CIRAD, 45 bis Avenue de la Belle Gabrielle, Nogent-sur-Marne, CEDEX, France.Chudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.Erfurth, T., Rusche, H.,1976,The Marketing of Tropical Wood B. Wood Species from S. American Tropical,Moist Forests,F.A.O. Forestry DepartmentSallenave, P.,1955,Proprietes Phyiques et Mecaniques des Bois Tropicaux de l'Union Francaise,C.T.F.TTakahashi, A.,1975,Compilation of data on the Mechanical Properties of Foreign Woods (Part 2,Central and South America,Shimane University, Japan, Research Report on Foreign Wood No.4Teixeira, D. E., M. A. E. Santana and M. Rabelo de Souza.1988. Amazonian Timbers for the International Market.ITTO Technical Series 1.Brazilian Institute for Forestry Development, Brazil.Wangaard, F.F., et al,1954,Properties and Uses of Tropical Woods 4,Tropical Woods,14(99, pp1-187
*Come interpretare i dati (manleva su eventuali imprecisioni)