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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 Boring Carving Common Names Common Uses Countries of Distribution Cutting Resistance Distribution Overview Drying Defects Ease of Drying Environmental Profile Family Name Gluing Grain Heartwood Color Kiln Schedules Luster Mortising Moulding Movement in Service Nailing Natural Durability Numerical Data Odor Planing Polishing References Regions of Distribution Resistance to Impregnation Response to Hand Tools Routing & Recessing Sapwood Color Scientific Name Texture Trade Name Tree Size Turning Scientific Name Dillenia pentagyna Trade Name Simpoh Family Name Dilleniaceae Common Names Aggai, Dillenia, Katmon, San, Simpoh, Simpur, Zinbyun Regions of Distribution Oceania and S.E. Asia Countries of Distribution  [VIEW MAP] China, India, Indonesia, Malaysia, Thailand, Vietnam Common Uses Beams, Building construction, Building materials, Cabin construction, Chairs, Chests, Concealed parts (Furniture), Concrete formwork, Construction, Decorative plywood, Desks, Dining-room furniture, Domestic flooring, Dowell pins, Dowells, Drawer sides, Factory construction, Factory flooring, Fine furniture, Floor lamps, Flooring, Form work, Foundation posts, Framing, Furniture , Furniture components, Furniture squares or stock, Hatracks, Heavy construction, Interior construction, Joists, Kitchen cabinets, Light construction, Living-room suites, Millwork, Office furniture, Paneling , Parquet flooring, Planks, Plywood, Porch columns Environmental Profile Status unknown due to inadequate information Generally secure within its natural habitat Data source is World Conservation Monitoring Center Inadequate information on the species environmental status in the Yunnan Province in China, Myanmar or Burma, India, Java, Sabah and Thailand Distribution Overview Can be found in tropical semi-evergreen forests in India, as well as in moist deciduous forests in Wynad, Mysore and Karnataka plateaux. These forests, which are in primary nature, are found in the rainfall zone of 1500 to 1800mm, as a transition between wet evergreen and dry deciduous forests. May also be present in other parts of the Indo-Malayan region. Heartwood Color Brown Green/grey Reddish brown Purplish Deposits in vessels may appear as white lines on the surface Darkens with age Sapwood Color Yellow White Green/Grey Paler than heartwood Not clearly differentiated from the heartwood Grain Interlocked Even Twisted Seldom straight, possibly interlocked Interlocked Quartersawn surfaces may yield an attractive silver figure Texture Fine Even or uniform Uniform Medium coarse to coarse Even textured Luster High Medium Natural Durability Very durable Very little natural resistance Sapwood susceptible to attack by powder post beetles Odor No specific smell or taste Kiln Schedules T3 - C2 (4/4) US/T3 - C2 (4/4) U Drying Defects Internal Honeycombing Possible Checking Collapse Quartersawn material less prone to degrade Material may warp and end-check during seasoning Ease of Drying Thick Stock Requires Care Moderately Difficult to Difficult Requires special attention Specific information on drying difficulty is not available Quartersawn material dries with little degrade Radial - 2.2% Shrinkage for Dillenia spp.(Green to Air-dry): Tangential - 3.9% Tree Size Bole length is 0-10 m Stilt roots often present Blunting Effect High to severe Boring Poor to very poor results Fairly difficult to very difficult Fairly good results Carving Very Good to Excellent Results Fairly Difficult to Very Difficult Cutting Resistance Sawn timber may spring immediately after sawing Fine dust may clog saw teeth Fairly easy to saw Gluing Fairly Difficult to Very Difficult Mortising Fairly Difficult to Very Difficult Moulding Fairly Difficult to Very Difficult Movement in Service Excellent Stability - Small Movement Fair to Good Stability - Medium Movement Nailing Nails hold poorly Planing Fairly Difficult to Very Difficult Planing yields smooth surfaces Resistance to Impregnation Resistant sapwood Resistant heartwood Heartwood is permeable The heartwood responds fairly well to preservative treatment. Absorptions of 6 to 10 pcf of preservative oil have been reported Response to Hand Tools Fairly Difficult to Difficult to Work Routing & Recessing Fairly Difficult to Very Difficult Turning Very Good to Excellent Results Fairly Difficult to Very Difficult Fairly Easy to Very Easy Good results Polishing Very Good to Excellent Results Fairly Easy to Very Easy Numerical Data Item Green Dry English Bending Strength 8245 11197 psi Crushing Strength 3972 7173 psi Density 35 lbs/ft3 Impact Strength 22 28 inches Stiffness 1055 1331 1000 psi Specific Gravity 0.49 0.55 Weight 51 37 lbs/ft3 Radial Shrinkage 3 % Tangential Shrinkage 7 % Volumetric Shrinkage 11 % Item Green Dry Metric Bending Strength 579 787 kg/cm2 Crushing Strength 279 504 kg/cm2 Density 560 kg/m3 Impact Strength 55 71 cm Stiffness 74 93 1000 kg/cm2 Specific Gravity 0.49 0.55 Weight 817 592 kg/m3 Radial Shrinkage 3 % Tangential Shrinkage 7 % References Chowdhury, K.A. and S.S. Ghosh. 1958. Indian Woods - Their Identification, Properties and Uses, Volume I - Dilleniaceae to Elaeocarpaceae. Published by the Manager of Publications, Delhi, India. Chudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison. Keating, W.G., Bolza, E.,1982,Characteristics properties and uses of timbers. South East Asia, Northern,Australia and the Pacific,C.S.I.R.O. Div. Chemical Technology,Inkata Press,1 Limaye, V.D. 1954. Grouping of Indian Timbers and their Properties, Uses and Suitability. Indian Forest Records, New Series. Timber Mechanics, Vol. 1, No. 2, Forest Research Institute, Dehra Dun, India. Limaye, V.D. and B.R. Sen. 1953. Weights and Specific Gravities of Indian Woods. Indian Forest Records, New Series. Timber Mechanics, Vol. 1, No. 4, Forest Research Institute, Dehra Dun, India. Reyes, L.J. 1938. Philippine Woods. Department of Agriculture and Commerce, Technical Bulletin 7, Commonwealth of the Philippines, Bureau of Printing, Manila.