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Apitong
Apitong (Dipterocarpus basilanicus)

Family: Dipterocarpaceae

Common names: Angu, Apitong, Basilan, Basilan apitong, Bebe, Dau, Eng, Heng, Huevos de gato, In, Keruing, Lagan, Lagunero, Mututi, Nogal falso, Palo de pollo, Pau sangua, Sangre, Sangre de drago, Sangrillo, Yang, Yaya sangre

Distributed in: Philippines (Oceania and S.E. Asia)

Distribution overview: Basilan Island in the Philippines. It is locally abundant, growing at elevations of 1650 to 1980 feet (500 to 600 m).

Common uses: Boat building, Building construction, Building materials, Cabin construction, Canoes, Construction, Core Stock, Crossties, Decorative plywood, Decorative veneer, Domestic flooring, Factory construction, Factory flooring, Figured veneer, Flooring, Form work, Heavy construction, Lifeboats, Light construction, Pallets, Parquet flooring, Plain veneer, Plywood, Railroad ties, Rough construction, Structural plywood, Sub-flooring, Utility plywood, Veneer

Environment profile: Status unknown due to inadequate information

Tree size: Trunk diameter is 100-150 cm

Colors: the heart isReddish brown, Yellowand the sapwoodWide, Yellow.The grain isInterlocked, the textureResinous and oilyand the lusterMedium

Natural durability: Susceptible to termite attack, Very durable

Odor: Strong resinous smell associated with freshly cut wood

Silica Content: Contains varying amounts of silica Dipterocarpus timbers are reported to contain varying amounts of silica, generally less than 0.5% of ovendry weight. Silica levels above 0.05% are believed to be high enough to affect some wood properties

Kiln Schedules: T3 - D2 (4/4); T3 - D1 (8/4) US

Drying Defects: Drying at high temperatures may cause resin exudation, Warping can be expected

Ease of Drying: Reconditioning Treatement

Comments: Exudates - The wood contains resin which tends to exude on to surfaces of material dried at high temperaturesTimber produced by Dipterocarpus species from Malaysia are reported to vary considerably in Characteristics.

Blunting Effect: Fairly severe blunting effect on cutters

Boring: Fairly difficult to very difficult

Cutting Resistance: Saw teeth blunted rapidly and severely by some stock

Gluing: Poor to Very Poor Results

Mortising: Fairly Difficult to Very Difficult

Nailing: Satisfactory nailing properties

Planing: Very Good to Excellent

Resistance to Impregnation: Sapwood is moderately resistant

Response to hand tools: Fairly Difficult to Difficult to Work

Sanding: Good sanding properties

Steam bending: Steaming accompanied by severe resin exudation

Turning: Wood containing silica may severely blunt cutting edges

Polishing: Very Good to Excellent; Staining: High resin content adversely affects most finishing treatments ;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity 0,47 0,54
Density 753 kg/m3
Bending Strength 530 978 kg/cm2
Crushing Strength 33 55 kg/cm2
Hardness 402 kg
Impact Strength cm
Shearing Strength 93 kg/cm2
Stiffness 106 150 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage %
Weight kg/m3
Maximum Load cm-kg/cm3
Toughness 368 cm-kg
Static Bending 321 674 kg/cm2
Item Green Dry English
Bending Strength 7546 13916 psi
Crushing Strength 474 787 psi
Density 47 lbs/ft3
Hardness 888 lbs
Maximum Crushing Strength 3469 7233 psi
Shearing Strength 1328 psi
Static Bending 4572 9589 psi
Stiffness 1519 2146 1000 psi
Toughness 320 inch-lbs
Specific Gravity 0.47 0.54
Weight 45 37. lbs/ft3


Chudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.HMSO.1972.Handbook of Hardwoods, 2nd Edition.Revised by R.H. Farmer.Department of the Environment, Building Research Establishment, Princes Risborough Laboratory, Her Majesty's Stationery Office, London.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,1Lauricio, F. M., Bellosillo, S. B., The Mechanical and Related Properties of Philippine Woods, The Lumberman, 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.Tamesis, F. and L. Aquilar. 1953.The Philippine Mahogany and Other Dipterocarp Woods.Popular Bulletin No. 44. Department of Agriculture and Natural Resources, Republic of the Philippines, Manila.
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