Abahungon (Shorea polysperma)
Family: Dipterocarpaceae
Common names: Abahungon, Adamoi, Adamon, Adandron, Adanroi, Adumoi, Alangao, Ayohan, Ayuhan, Ayuthan, Bagitan, Bagobahong, Bagong-bahong, Balabaccan mahogany, Balagaian, Balakbak, Balakbakan, Balsian, Bataan mahogany, Beko, Bunga, Chapui, Diga hungan, Digahungan, Ganda, Gangauan, Hapnit, Hillagasi, Illagasi, Kaliaan, Kalikasan, Kuela, Lauan, Lauan colorado, Lauan gangauan, Lauan-chapui, Lauan-gangauan, Letis, Lotis, Mag-orang, Magorang, Majau, Malagamat, Malagangao, Malagangao na itim, Malagiso, Malagniat, Malai-a, Malakayang, Malang, Malatangan, Manapayung, Manapog, Manasol, Manggachapoi, Manggachapui, Manili, Manpayug, Manpog, Mansal, Maratinta, Matanged, Mayaas, Mayapis, Merampu, Meranti pipijat, Merantimajau, Naitim, Palai, Palali, Panunsungan, Panunsungin, Red lauan, Selangan pelandok, Tagaui, Takoban-tabigion, Takuban, Takuban nga gangauan, Takugan nga ganguan, Tamo, Tamok, Tangile, Tanguile, Tiaong, Tugaui, Tulo, Tulu, Tumutugaui, Tutmutugaui
Distributed in: Brunei, Philippines (Oceania and S.E. Asia)
Common uses: Boat building (general), Boat building: planking, Cabinetmaking, Furniture, Joinery, Paneling, Plywood, Veneer
Tree size: Trunk diameter is 100-150 cm
Colors: the heart isRed, Reddish brownand the sapwoodWell defined, White to yellow.The grain isRippled figure, the textureUniformand the lusterSlightly lustrous
Natural durability: Non-resistant to termites, Perishable
Odor: Has an odor
LightInduced Color Change: Darker
Kiln Schedules: Drying (speed) is fast
Drying Defects: Moderate twist/warp, Slight surface checking
Ease of Drying: Reconditioning Treatement
Tree Identification: Bole/stem form is straight
Comments: General finishing qualities are rated as good
Blunting Effect: High to severe
Cutting Resistance: Fairly Difficult to Very Difficult to saw
Gluing: Easy to glue
Mortising: Fairly Difficult to Very Difficult
Moulding: Fairly Difficult to Very Difficult
Movement in Service: Fairly Difficult to Very Difficult
Nailing: Poor to Very Poor , Pre-Boring Recommended
Planing: Fairly Difficult to Very Difficult
Resistance to Impregnation: Resistant sapwood
Response to hand tools: Fairly Difficult to Difficult to Work
Routing recessing: Fairly Difficult to Very Difficult
Sanding: Fairly Easy to Very Easy
Veneering qualities: Suitable for peeling, There is slight to moderate drying degrade and the potential for buckles and splits
Screwing: Pre-boring recommended
; Turning: Fairly Difficult to Very Difficult
Polishing: Surface Preparation; Staining: Finish is generally good
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- Numerical data Metric
- Numerical data English
- Strength properties
- References
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Item |
Green |
Dry |
Metric |
Specific Gravity |
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Density |
|
576 |
kg/m3 |
Bending Strength |
609 |
954 |
kg/cm2 |
Crushing Strength |
275 |
449 |
kg/cm2 |
Hardness |
|
451 |
kg |
Impact Strength |
|
55 |
cm |
Shearing Strength |
|
85 |
kg/cm2 |
Stiffness |
122 |
141 |
1000 kg/cm2 |
Tangential Shrinkage |
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% |
Radial Shrinkage |
4 |
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% |
Weight |
560 |
432 |
kg/m3 |
Maximum Load |
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cm-kg/cm3 |
Toughness |
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cm-kg |
Static Bending |
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kg/cm2 |
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| | | | Item | Green | Dry | English | Bending Strength | 8670 | 13570 | psi | Density | | 36 | lbs/ft3 | Hardness | | 995 | lbs | Impact Strength | | 22 | inches | Maximum Crushing Strength | 3916 | 6397 | psi | Shearing Strength | | 1221 | psi | Stiffness | 1748 | 2018 | 1000 psi | Weight | 35 | 27 | lbs/ft3 | Radial Shrinkage | 4 | | % | Tangential Shrinkage | 8 | | % | |
Density (dry weight) = 38-45 lbs/cu. ft. Density (dry weight) = 31-37 lbs/cu. ft. Modulus of Elasticity (stiffness) = medium Max. crushing strength = medium Hardness (side grain) = soft Bending strength (MOR) = medium Shrinkage, Radial = moderate Shearing strength (parallel to grain) = very low Shearing strength (parallel to grain) = low Density (dry weight) = 46-52 lbs/cu. ft. Density (dry weight) = 23-30 lbs/cu. ft. Toughness-Hammer drop (Impact Strength) = very low Toughness-Hammer drop (Impact Strength) = low Shrinkage, Tangential = moderate Shrinkage, Tangential = fairly large Modulus of Elasticity (stiffness) = high Bending strength (MOR) = low
Ashton, P.S.,1964,A manual of the Dipterocarp trees of Brunei State,O.U.P. LondonBrown, 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 UniversityCortes, R.T.,1940,Impact bending properties of twelve Philippine Dipterocarps,Philippine Journal of Forestry 3(3) pp325-43Dale, I.R., Greenway, P.J.,1961,Kenya Trees and Shrubs,Buchanans Kenya Estates Ltd. Nairobi Hatchards LondonFundter, J.M.,1982,Names for Dipterocarp timbers and trees from Asia,Pudoc, Wageningen, NetherlandsHarrar, E.S.,1942,Some Physical Properties of Modern Cabinet Woods 3. Directional and Volume,Shrinkage,Tropical Woods,9(71, pp26-32I.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 CuttingKynoch, W., Norton, N.A.,1938,Mechanical Properties of certain tropical woods chiefly from S. America,School of Forestry and Conservation, University of Michigan Bulletin,No.7Lomibao, B.A.,1973,Guide to the identification of the woods of Philippine Dipterocarpaceae,Foxpride Digest 2(2) pp26-34Reyes, L.J.,1938,Philippine Woods,Commonwealth of the Philippines Department of Agriculture and Commerce,Technical Bulletin,No.7Tamesis, F., Aguilar, L.,1953,The 'Philippine mahogany' and other Dipterocarp woods,Philippine Department of Agriculture and Natural Research Popular Bulletin,No.44U.S.D.A. Forest Service,1974,Wood Handbook,U.S.A. Department of Agriculture, Forest Service Handbook,72
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