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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. Blunting Effect Comments Common Names Common Uses Countries of Distribution Drying Defects Ease of Drying Family Name Gluing Grain Heartwood Color Kiln Schedules Luster Movement in Service Natural Durability Natural Growth Defects Numerical Data Planing References Regions of Distribution Resistance to Impregnation Response to Hand Tools Sapwood Color Scientific Name Staining Strength Properties Texture Trade Name Tree Identification Turning Veneering Qualities Scientific Name Pentacme contorta Trade Name Anas Family Name Dipterocarpaceae Common Names Anas, Angser, Apnit, Bakook, Balagbag, Balak, Balakbak, Bayokan, Bayukan, Bunge, Lauaan, Lauan-blanco, Lauanputi, Malaanonang, Malasinoro, Mayapis, Pamalalran, Tiaong, White lauan Regions of Distribution Oceania and S.E. Asia Countries of Distribution  [VIEW MAP] Philippines Common Uses Boat building (general), Boat building: planking, Boxes and crates, Cabinetmaking, Flooring, Furniture, Heavy construction, Joinery, Light construction, Mine timbers, Paneling, Particleboard, Plywood, Veneer Heartwood Color Brown Green/grey Pale red to pink Greenish to greyish Brown, red, dark reddish brown with nearly black stripes after prolonged exposure Sapwood Color White Yellow Same as heartwood Different than heartwood Grain Interlocked Figure Rippled (figure) Interlocked Rippled figure Texture Fine Medium to coarse Coarse Luster Medium Slightly lustrous Natural Growth Defects Latex or other ducts Natural Durability Very durable Susceptible to insect attack Resistant to termites Resistant to powder post beetles Susceptible to attack from termites (Isoptera) Non durable Heartwood is susceptible to wood staining fungal attack Kiln Schedules Drying (speed) is fast Drying Defects Distortion Checking Ease of Drying Fairly Easy Easy Tree Identification Bole/stem form is cylindrical Bole/stem form is buttressed Comments General finishing qualities are rated as good Blunting Effect Blunting effect on machining is slight Gluing Moderate gluing properties Movement in Service Stable Small Planing Planes well, to a good finish Resistance to Impregnation Heartwood is permeable Response to Hand Tools Easy to Work Easy to machine Moderate working qualities Difficult to machine Turning Good results Veneering Qualities Easy to cut There is slight to moderate drying degrade and the potential for buckles and splits Suitable for peeling Staining Finish is generally satisfactory Strength Properties Modulus of Elasticity (stiffness) = low Density (dry weight) = 31-37 lbs/cu. ft. Bending strength (MOR) = low Max. crushing strength = medium Shrinkage, Tangential = moderate Shrinkage, Radial = small Hardness (side grain) = soft Density (dry weight) = 38-45 lbs/cu. ft. Numerical Data Item Green Dry English Bending Strength 6111 9589 psi Density 34 lbs/ft3 Hardness 995 lbs Maximum Crushing Strength 3916 6397 psi Stiffness 1358 1568 1000 psi Weight 33 26 lbs/ft3 Radial Shrinkage 3 % Tangential Shrinkage 7 % Item Green Dry Metric Bending Strength 429 674 kg/cm2 Density 544 kg/m3 Hardness 451 kg Maximum Crushing Strength 275 449 kg/cm2 Stiffness 95 110 1000 kg/cm2 Weight 528 416 kg/m3 Radial Shrinkage 3 % References Brown, W.H.,1969,Properties and uses of Tropical hardwoods in the United Kingdom. Part 1,Nonstructural properties and uses.,Conference on Tropical hardwoods SC-5/TN-5, Syracuse University Chudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison. I.U.F.R.O.,1973,Veneer Species of the World,Assembled at F.P.L. Madison on behalf of I.U.F.R.O. Working Party on,Slicing and Veneer Cutting Lomibao, B.A.,1973,Guide to the identification of the woods of Philippine Dipterocarpaceae,Foxpride Digest 2(2) pp26-34 Reyes, L.J.,1938,Philippine Woods,Commonwealth of the Philippines Department of Agriculture and Commerce,Technical Bulletin,No.7 Tamesis, F., Aguilar, L.,1953,The 'Philippine mahogany' and other Dipterocarp woods,Philippine Department of Agriculture and Natural Research Popular Bulletin,No.44 U.S.D.A. Forest Service,1974,Wood Handbook,U.S.A. Department of Agriculture, Forest Service Handbook,72