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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 Countries of Distribution Cutting Resistance Distribution Overview Drying Defects Ease of Drying Environmental Profile Grain Heartwood Color Luster Natural Durability Numerical Data Odor Planing Polishing References Regions of Distribution Resistance to Impregnation Sapwood Color Scientific Name Strength Properties Texture Trade Name Tree Size Turning Scientific Name Tarrietia sylvatica Trade Name Dungon Family Name Common Names Chan thip, Dungon, Lau tau, Mascalwood, Palonapin, Resak, Taungsagaing Regions of Distribution Oceania and S.E. Asia Countries of Distribution  [VIEW MAP] Indonesia, Malaysia, Philippines Environmental Profile Status has not been officially assessed Distribution Overview Distributed in the Philippine Islands, from Luzon (Cagayan to Albay), Mindoro, Samar, Masbate, Panay, and Mindanao (Misamia and Davao). It is common in dry primary forests at low and medium elevations. Heartwood Color Brown Reddish brown Dark chocolate Sapwood Color White Grey Pink Brown Pink to pale reddish brown Not clearly differentiated from the heartwood Width is 0.8 to 2 inches (2 to 5 cm) Grain Figure Crossed Sometimes curly Crossed Texture Coarse Smooth Fine Dense Luster Non-lustrous Natural Durability Durable Moderately durable Sapwood is readily attacked by insects and decay fungi Resistant to attack by marine borers Heartwood has high natural resistance to decay High natural resistance to decay when in contact with the ground or exposed to weather. Odor No specific taste The wood has a peculiar odor similar to that of old leather Drying Defects Lumber should be piled carefully and heavily weighted to prevent warping Ease of Drying Moderately Difficult to Difficult Thick Stock Requires Care Despite staining, timber seasons well The material is reported to season well, but logs and large timbers tend to develop deep splits during seasoning Tree Size Tree height is 20-30 m Trunk diameter is 300-350 cm The tree is described as large Comments Deposits The material is highly suitable for steam bent work where strength and durability are required. The wood is reported to often contain large masses of stony deposits in old knots and cracks in the heart Timber produced by Dungon is very similar to that from Dungon-late (Heritiera littoralis) in structure, color, density, and other physical characteristics. Blunting Effect Severe dulling effect on tool edges Dulling effect on tool edges is severe because the wood is tough and also because of abrasive deposits Cutting Resistance Easy to saw Difficult to saw Planing Fairly Difficult to Very Difficult Fair to Good Results Difficult to plane and machine in most operations due to high density The timber is reported to plane with difficulty, and other machining operations are equally difficult due to its toughness Resistance to Impregnation Permeable sapwood Permeable heartwood Turning Very Good to Excellent Results Polishing Very Good to Excellent Results Strength Properties Very hard Bending strength in the air-dry condition (about 12 percent moisture content) is exceptionally high. It is far superior in strength to either Teak or Hard maple. It has superior properties in compression parallel to grain in the air-dry condition than Teak, White oak, or Hard maple. It is very hard - much harder than White oak, Hard maple, or Teak Numerical Data Item Green Dry English Bending Strength 12489 22999 psi Crushing Strength 1714 2536 psi Hardness 2846 lbs Maximum Crushing Strength 6411 9520 psi Shearing Strength 2021 psi Static Bending 7136 11318 psi Stiffness 1603 2230 1000 psi Toughness 401 inch-lbs Specific Gravity 0.79 0.82 Item Green Dry Metric Bending Strength 878 1617 kg/cm2 Crushing Strength 120 178 kg/cm2 Hardness 1290 kg Maximum Crushing Strength 450 669 kg/cm2 Shearing Strength 142 kg/cm2 Static Bending 501 795 kg/cm2 Stiffness 112 156 1000 kg/cm2 Toughness 461 cm-kg References Desch, H. E. 1954. Manual of Malayan Timbers - Volume II. Malayan Forest Records, No. 15. Malaysia Publishing House Ltd., Singapore. Lauricio, F. M., Bellosillo, S. B., The Mechanical and Related Properties of Philippine Woods, The Philippine Lumber Journal, 12(5):A-H. Reyes, L.J. 1938. Philippine Woods. Department of Agriculture and Commerce, Technical Bulletin 7, Commonwealth of the Philippines, Bureau of Printing, Manila. Schneider, E.E. 1916. Commercial Woods of the Philippines: Their Preparation and Uses. Bulletin No. 14. Department of the Interior, Bureau of Forestry, Manila, Philippines.