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Palosapis
Palosapis (Anisoptera thurifera)

Family: Dipterocarpaceae

Common names: Kaunghmu, New Guinea mersawa, Palosapis, Phdiek, Ven ven

Distributed in: India, Indonesia, Malaysia, Myanmar, Pakistan, Papua New Guinea, Philippines (Oceania and S.E. Asia)

Distribution overview: Endemic to the Phillipines (Mindoro, Luzon, Ticao, Masbate, Sibuyan, Panay, Negros). Also believed to occur in Pakistan southward to lower Burma and Thailand. Generally found in evergreen and semi-evergeen forests.

Common uses: Balusters, Bedroom suites, Boat building, Building construction, Building materials, Cabinetmaking, Canoes, Chairs, Chests, Concealed parts (Furniture), Construction, Desks, Dining-room furniture, Domestic flooring, Dowell pins, Dowells, Drawer sides, Excelsior, Fine furniture, Floor lamps, Flooring, Furniture , Furniture components, Furniture squares or stock, Hardboards, Hatracks, Interior construction, Joinery, Kitchen cabinets, Lifeboats, Light construction, Living-room suites, Moldings, Office furniture, Parquet flooring, Particleboard, Radio - stereo - TV cabinets, Rustic furniture, Shipbuilding, Stairworks, Stools

Environment profile: No threat in the near future

Tree size: Trunk diameter is 100-150 cm

Colors: the heart isLight buff to yellowish brown, Yellowand the sapwoodPale yellow, Yellow.The grain isStraight, the textureUniformand the lusterNon-lustrous

Natural durability: Susceptible to attack by pin-hole borers , Withstands harmful effects of weather fairly well

Odor: No specific taste

Silica Content: Silicac contents of .42% (of ordinary weight) have been reported

Kiln Schedules: T2-D4(4/4)T2-D3(8/4)Us Schedule A United Kingdom

Drying Defects: Differential shrinkage, uneven moisture distribution and checking are common drying degrades , Uneven Moisture Content

Ease of Drying: Thick Stock Requires Care

Comments: Retards the setting of cement and should not be used for shuttering concrete Tapped for oleo-resin The tree is often tapped for oleo-resin in Malaysia

Blunting Effect: High to severe

Boring: Fairly difficult to very difficult

Carving: Fairly Difficult to Very Difficult

Cutting Resistance: Tungsten carbide tipped cutters are recommended for converting seasoned wood

Gluing: Glues well

Mortising: Mortising properties affected by interlocked grain

Moulding: Very sharp cutting edges are required to produce a smooth surface

Movement in Service: Very sharp cutting edges are required to produce a smooth surface

Nailing: Good nail holding properties , Very Good to Excellent

Planing: Very sharp cutting edges needed for clean and smooth surfaces

Resistance to Impregnation: Resistant sapwood

Response to hand tools: Severe blunting effect on cutting edges because of interlocked grain and silica content

Routing recessing: Fairly Difficult to Very Difficult

Screwing: Good screwing properties, Very Good to Excellent Results; Turning: Good turning qualities

Polishing: Satisfactory polishing characteristics ; Staining: Satisfactory staining properties;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity 0,45 0,52
Density 624 kg/m3
Bending Strength 522 934 kg/cm2
Crushing Strength 47 55 kg/cm2
Hardness 389 kg
Impact Strength cm
Shearing Strength 87 kg/cm2
Stiffness 101 153 1000 kg/cm2
Tangential Shrinkage 9 %
Radial Shrinkage 4 %
Weight 1057 608 kg/m3
Maximum Load cm-kg/cm3
Toughness 463 cm-kg
Static Bending 321 682 kg/cm2
Item Green Dry English
Bending Strength 7436 13298 psi
Crushing Strength 670 783 psi
Density 39 lbs/ft3
Hardness 858 lbs
Maximum Crushing Strength 3673 7081 psi
Shearing Strength 1239 psi
Static Bending 4572 9701 psi
Stiffness 1444 2188 1000 psi
Toughness 402 inch-lbs
Specific Gravity 0.45 0.52
Weight 66 38 lbs/ft3
Radial Shrinkage 4 %
Tangential Shrinkage 9 %
Volumetric Shrinkage 15 %

High in density
Heavy
Hardness = medium
Compression strength (parallel to grain) = high
Bending strength (MOR) = high
It compares favorably with Teak, which also has high bending strength. Strength in compression parallel to grain is in the high range. Other species in this range include Teak, White oak, and Hard maple. It resists denting and marring about as well as white oak or birch

Bolza, E. and N.H. Kloot. 1966. The Mechanical Properties of 81 New Guinea Timbers. Division of Forest Products Technological Paper No. 41, Commonwealth Scientific and Industrial Organization, Melbourne, Australia.Boone, R.S., C.J. Kozlik, P.J. Bois, and E.M. Wengert. 1988.Dry Kiln Schedules for Commercial Woods - Temperate and Tropical.United States Department of Agriculture, Forest Service, General Technical Report FPL-GTR-57, Forest Products Laboratory, Madison, Wisconsin.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.Eddowes, P.J. 1977. Commercial Timbers of Papua New Guinea - Their Properties and Uses. Forest Products Research Center, Office of Forests, Department of Primary Industry, Papua New Guinea.HMSO. 1981. Handbook of Hardwoods, 2nd Edition. revised by R.H. Farmer. Department of the Environment, Building Research Establishment, Princes Risborough Laboratory, Princes Risborough, Aylesbury, Buckinghamshire.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.Lincoln, W.A. 1986. World Woods in Color. Linden Publishing Co. Inc., Fresno, California.Simpson, W.T. and J.A. Sagoe. 1991. Relative Drying Times of 650 Tropical Woods : Estimation by Green Moisture Content, Specific Gravity, and Green Weight Density.United States Department of Agriculture (USDA, Forest Service, General Technical Report FPL-GTR-71, Forest Products Laboratory, Madison, Wisconsin.WCMC. 1992. Conservation Status Listing - Trees and Timbers of the World. World Conservation Monitoring Center-Plants Programme, Cambridge, CB3 ODL, United Kingdom.
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