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Blunting Effect
Boring
Carving
Comments
Common Names
Common Uses
Countries of Distribution
Cutting Resistance
Drying Defects
Ease of Drying
Environmental Profile
Family Name
Gluing
Grain
Heartwood Color
Luster
Mortising
Moulding
Movement in Service
Nailing
Natural Durability
Numerical Data
Planing
References
Regions of Distribution
Resistance to Impregnation
Response to Hand Tools
Sanding
Sapwood Color
Scientific Name
Steam Bending
Strength Properties
Synonyms
Texture
Trade Name
Tree Identification
Tree Size
Turning
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Synonyms
Pterocarpus draco
Common Names
Bambulo, Bebe, Bebe hoedoe, Bois pale, Cacu, Chajada amarilla, Corkwood, Cowee, Drago, Dragon tree, Hoogland bebe, Kaway, Lagunero, Mangle medaille, Moutouchi, Moutouchi de savane, Mucutena, Mututy, Paletuvier, Palo de pollo, Sabrojo, Sang dragon, Sangre, Sangre de drago, Sangre gado, Sangrillo, Sangrito, Swamp bloodwood, Swamp kaway, Waata gwe-gwe, Watra bebe
Regions of Distribution
Central America, Latin America, Oceania and S.E. Asia
Countries of Distribution
[VIEW MAP]
Brazil, Ecuador, French Guiana, Guyana, Jamaica, Mexico, Puerto Rico [US], Suriname
Common Uses
Boxes and crates, Cabinetmaking, Concrete formwork, Food containers, Furniture, Joinery, Light construction, Particleboard
Environmental Profile
| Vulnerable |
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| Abundant/Secure |
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Heartwood Color
| White |
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| Grey |
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| Purple |
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| Dark brown |
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Sapwood Color
Grain
| Figure |
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| Even |
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| Straight |
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| Other (figure) |
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Texture
Luster
Natural Durability
| Non-durable |
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| Non durable |
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| Susceptible to attack from termites (Isoptera) |
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| Susceptible to attack from powder post (Lyctid & Bostrychid) beetles |
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| Heartwood is susceptible to wood staining fungal attack |
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| Susceptible to marine borer attack |
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| Pinworms (ambrosia beetles) may be present in the felled log |
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Drying Defects
| Distortion |
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| Checking |
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| Extension of Existing Shakes |
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| Discoloration |
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| Ring Shakes |
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Ease of Drying
| Rapidly |
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| Reconditioning Treatement |
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| Fairly Easy |
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Tree Identification
| Bole/stem form is buttressed |
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| Bole/stem form is fluted |
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| Bole/stem form is misshapen |
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Tree Size
| Bole length is 20-30 m |
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| Tree height is 30-40 m |
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Comments
General finishing qualities are rated as good
Blunting Effect
Boring
| Fair to good results |
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| Fairly easy to very easy |
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Carving
| Fair to Good Results |
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| Fairly Difficult to Very Difficult |
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Cutting Resistance
Gluing
| Fair to Good Results |
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| Fairly Easy to Very Easy |
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Mortising
| Fair to Good Results |
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| Fairly Easy to Very Easy |
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Moulding
| Fair to Good Results |
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| Fairly Easy to Very Easy |
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Movement in Service
| Fair to Good Stability - Medium Movement |
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Nailing
| Very Good to Excellent Results |
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| Fair to Good Results |
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| Fairly Easy to Very Easy |
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Planing
| Fairly Difficult to Very Difficult |
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| Fairly Easy to Very Easy |
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| Fair to Good Results |
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Resistance to Impregnation
| Permeable sapwood |
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| Resistant sapwood |
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| Resistant heartwood |
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Response to Hand Tools
| Responds Readily |
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| Easy to Work |
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| Easy to machine |
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Sanding
| Fair to Good Results |
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| Fairly Easy to Very Easy |
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Turning
| Fair to Good Results |
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| Fairly Easy to Very Easy |
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Steam Bending
| Poor to Very Poor Results |
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Strength Properties
| Density (dry weight) = 31-37 lbs/cu. ft. |
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| Density (dry weight) = 38-45 lbs/cu. ft. |
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| Shearing strength (parallel to grain) = low |
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| Modulus of Elasticity (stiffness) = low |
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| Max. crushing strength = medium |
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| Density (dry weight) = 23-30 lbs/cu. ft. |
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| Density (dry weight) = 15-22 lbs/cu. ft. |
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| Bending strength (MOR) = very low |
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| Bending strength (MOR) = low |
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| Shrinkage, Tangential = moderate |
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| Shrinkage, Tangential = large |
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| Shrinkage, Tangential = fairly large |
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| Shrinkage, Radial = small |
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| Shrinkage, Radial = moderate |
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| Shrinkage, Radial = large |
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| Shrinkage, Radial = fairly large |
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| Modulus of Elasticity (stiffness) = very low |
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| Hardness (side grain) = very soft |
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| Hardness (side grain) = soft |
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| Bending strength (MOR) = medium |
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Numerical Data
| Item | Green | Dry | English |
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| Bending Strength | 5310 | 8198 | psi |
| Density | | 31 | lbs/ft3 |
| Hardness | | 657 | lbs |
| Maximum Crushing Strength | 3916 | 6397 | psi |
| Shearing Strength | | 1560 | psi |
| Stiffness | 1245 | 1445 | 1000 psi |
| Weight | 30 | 25 | lbs/ft3 |
| Radial Shrinkage | 4 | | % |
| Tangential Shrinkage | 8 | | % |
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| Item | Green | Dry | Metric |
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| Bending Strength | 373 | 576 | kg/cm2 |
| Density | | 496 | kg/m3 |
| Hardness | | 298 | kg |
| Maximum Crushing Strength | 275 | 449 | kg/cm2 |
| Shearing Strength | | 109 | kg/cm2 |
| Stiffness | 87 | 101 | 1000 kg/cm2 |
| Weight | 480 | 400 | kg/m3 |
| Radial Shrinkage | 4 | | % |
References
Berni, C.A., Bolza, E., Christensen, F.J.,1979,South American Timbers - The Characteristics, Properties and Uses of 190,Species,C.S.I.R.O Div. Building Research
Erfurth, T., Rusche, H.,1976,The Marketing of Tropical Wood B. Wood Species from S. American Tropical,Moist Forests,F.A.O. Forestry Department
Fanshawe, D.B.,1954,Forest Products of British Guiana Part 1 Principal Timbers,Forest Department British Guiana Forestry Bulletin (New Series 2nd,Edition,No.1
Little, E.L., Wadsworth, F.H.,1964,Common Trees of Puerto Rico and the Virgin Islands,U.S.A. Department of Agriculture, Agriculture Handbook,No.249
Little, E.L.,1948,A Collection of Tree Specimens from Western Ecuador,Caribbean Forester,9(3,pp215-98
Marshall, R.C.,1939,Silviculture of the trees of Trinidad and Tobago - British West Indies,O.U.P.,London
Takahashi, 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.4
Vink, A.T.,1965,Surinam Timbers,Surinam Forest Service Paramaribo,3rd rev. ed.
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