Clicking any heading in the main data area (at right) will scroll the page back to this top position. Use the following links to jump to the associated section in the main data. Comments Common Names Common Uses Countries of Distribution Cutting Resistance Ease of Drying Family Name Grain Heartwood Color Kiln Schedules Luster Movement in Service Natural Durability Numerical Data Planing Polishing References Regions of Distribution Resistance to Impregnation Response to Hand Tools Sapwood Color Scientific Name Strength Properties Synonyms Texture Trade Name Tree Identification Tree Size		Scientific Name Platymiscium trinitatis Trade Name Hisirudan Family Name Leguminosae Synonyms Platymiscium duckei, Platymiscium nigrum Common Names Hisirudan, Koenatepi, Macacahuba, Macacauba, Macacauba de terra firme, Macacauba vermelha, Macacauba-preta, Roble, Trebol Regions of Distribution Central America, Latin America, Oceania and S.E. Asia Countries of Distribution  [VIEW MAP] Brazil, Ecuador, Paraguay, Suriname, Trinidad and Tobago Common Uses Billiard-cue butts, Brush backs & handles, Cabinetmaking, Carvings, Flooring, Furniture, Handles: general, Heavy construction, Joinery, Musical instruments, Musical instruments: strings, Posts, Railroad ties, Tool handles, Turnery, Veneer: decorative Heartwood Color Brown Red Pink Reddish brown Sapwood Color White to yellow Grain Even Closed Interlocked Figure Straight Wavy Distinct (figure) Interlocked Wavy Straight Distinct figure Texture Medium Fine Coarse Medium Fine Fine to medium Luster High Medium Lustrous Pronounced Natural Durability Perishable Resistant to marine borers Non-durable Non-resistant to termites Susceptible to insect attack Very durable Durable Susceptible to attack from termites (Isoptera) Resistant to attack from powder post (Lyctid & Bostrychid) beetles Resistant to attack from marine borers Kiln Schedules Dry at a moderate speed Ease of Drying Moderately Difficult to Difficult Fairly Easy Easy Tree Identification Bole/stem form is buttressed Tree Size Bole length is 20-30 m Tree height is 30-40 m Tree height is 20-30 m Comments General finishing qualities are rated as good General finishing qualities are rated as satisfactory Cutting Resistance Easy to saw Fairly Difficult to Very Difficult to saw Moderate to saw Movement in Service Small Planing Very Good to Excellent Results Fairly Difficult to Very Difficult Fair to Good Results Fairly Easy to Very Easy Easy to plane Resistance to Impregnation Heartwood is moderately resistant Response to Hand Tools Easy to Work Easy to machine Moderate working qualities Difficult to machine Polishing Very Good to Excellent Results Fair to Good Results Satisfactory results Good results Strength Properties Modulus of Elasticity (stiffness) = very high Max. crushing strength = very high Bending strength (MOR) = very high Bending strength (MOR) = high Hardness (side grain) = very hard Density (dry weight) = 61-67 lbs/cu. ft Shrinkage, Tangential = small Shrinkage, Radial = fairly large Shearing strength (parallel to grain) = very high Shearing strength (parallel to grain) = medium Shearing strength (parallel to grain) = high Max. crushing strength = high Bending strength (MOR) = medium Numerical Data Item Green Dry English Bending Strength 16108 23606 psi Density 62 lbs/ft3 Hardness 2940 lbs Maximum Crushing Strength 9251 12678 psi Shearing Strength 2745 psi Stiffness 2578 3011 1000 psi Weight 61 50 lbs/ft3 Radial Shrinkage 5 % Tangential Shrinkage 6 % Item Green Dry Metric Bending Strength 1132 1659 kg/cm2 Density 993 kg/m3 Hardness 1333 kg Maximum Crushing Strength 650 891 kg/cm2 Shearing Strength 192 kg/cm2 Stiffness 181 211 1000 kg/cm2 Weight 977 801 kg/m3 Radial Shrinkage 5 % References Almeida, D.G. de, Costa, J.R. da,1956,Madeiras do Brasil. (Timbers of Brazil.,Min. Ag. Servico de Economia Rural, Rio de Janeiro, Brazil,pp56 Brazil-Ministerio do Interior,1979,Pesquisas e Informac†ces sobre especies florestais da Amazonia,Dept. de Recuros Naturais Centro de Tecnologia Madeireira Ducke, A.,1943,The Most Important Woods of the Amazon Valley,Tropical Woods,12(74,pp1-15 Erfurth, T., Rusche, H.,1976,The Marketing of Tropical Wood B. Wood Species from S. American Tropical,Moist Forests,F.A.O. Forestry Department Marshall, R.C.,1934,Trees of Trinidad and Tobago,Government Printer Port of Spain Trinidad Record, S.J., Hess, R.W.,1943,Timbers of the New World,Yale University Press Record, S.J., Mell, C.D.,1924,Timbers of Tropical America,Yale Univ. Press Rizzini, C.T.,1978,Arvores e Madeiras Uteis do Brasil: Manual de Dendrologia Brasileira,Editora Edgard Blucher LTDA Brazil Vink, A.T.,1965,Surinam Timbers,Surinam Forest Service Paramaribo,3rd rev. ed. Wangaard, F.F., W.L. Stern, and S.L. Goodrich. 1955. Tropical Woods - Properties and Uses of Tropical Woods, Volume V, No. 103. School of Forestry, Yale University, New Haven, Connecticut.