Agob (Artocarpus altilis)
Family: Moraceae
Common names: Agob, Antipolo, Arbre a pain, Arto carpe, Artocarpa, Atipolo, Atipuo, Breadfruit tree, Dalungian, Kamanse, Kapiak, Pakak, Pakak-bakia, Panapen, Razara, Tipolo, Togog, Tugop, Tuyop, Ubien
Distributed in: Burma, India, Malaysia, Nigeria, Papua New Guinea, Philippines, Puerto Rico [US], Sierra Leone, Sri Lanka, Vanuatu (Africa, Central America, Oceania and S.E. Asia)
Common uses: Agricultural implements, Boat building (general), Boat building: framing, Boxes and crates, Bridge construction, Cabinetmaking, Canoes, Chemical derivatives, Coffins, Concrete formwork, Cooperages, Furniture, Heavy construction, Joinery, Light construction, Moldings, Musical instruments, Paneling, Particleboard, Plywood corestock, Plywood, Pulp/Paper products, Sporting Goods, Toys, Veneer
Tree size: Trunk diameter is 100-150 cm
Colors: the heart isYellow, Yellow to golden-yellow to orangeand the sapwoodWhite to yellow, Yellow.The grain isStriped figure, the textureMedium to coarseand the lusterMedium
Natural durability: Susceptible to insect attack, Susceptible to marine borer attack
Kiln Schedules: Drying (speed) is fast
Kiln Drying Rate: Naturally dries slowly
Drying Defects: Moderate twist/warp, Splitting
Ease of Drying: Slowly
Tree Identification: Bole/stem form is straight
Comments: General finishing qualities are rated as good General finishing qualities are rated as poor
Blunting Effect: Moderate
Boring: Fairly difficult to very difficult
Cutting Resistance: Easy to saw
Mortising: Poor to Very Poor
Moulding: Poor to Very Poor
Movement in Service: Poor to Very Poor
Planing: Very Good to Excellent
Resistance to Impregnation: Resistant sapwood
Resistance to Splitting: Excellent
Response to hand tools: Fairly Difficult to Difficult to Work
Sanding: The sanding finish is generally poor
Turning: Poor to Very Poor Results
Polishing: Very Good to Excellent; Staining: Staining (Characteristic) = coloured water-soluble extract
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- Numerical data Metric
- Numerical data English
- Strength properties
- References
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Item |
Green |
Dry |
Metric |
Specific Gravity |
|
|
|
Density |
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336 |
kg/m3 |
Bending Strength |
429 |
674 |
kg/cm2 |
Crushing Strength |
150 |
275 |
kg/cm2 |
Hardness |
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|
kg |
Impact Strength |
|
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cm |
Shearing Strength |
|
|
kg/cm2 |
Stiffness |
|
|
1000 kg/cm2 |
Tangential Shrinkage |
|
|
% |
Radial Shrinkage |
2 |
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% |
Weight |
336 |
272 |
kg/m3 |
Maximum Load |
|
|
cm-kg/cm3 |
Toughness |
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cm-kg |
Static Bending |
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kg/cm2 |
|
 |  |  |  | Item | Green | Dry | English | Bending Strength | 6111 | 9589 | psi | Density | | 21 | lbs/ft3 | Maximum Crushing Strength | 2139 | 3916 | psi | Weight | 21 | 17 | lbs/ft3 | Radial Shrinkage | 2 | | % | Tangential Shrinkage | 5 | | % | |
Shrinkage, Radial = very small Shrinkage, Tangential = very small Shrinkage, Tangential = small Shrinkage, Radial = small Density (dry weight) = 15-22 lbs/cu. ft. Shrinkage, Tangential = moderate Shrinkage, Tangential = fairly large Shrinkage, Radial = moderate Max. crushing strength = low Density (dry weight) = 23-30 lbs/cu. ft. Bending strength (MOR) = low
Browne, F.G.,1955,Forest Trees of Sarawak and Brunei and their Products.,Government Printing Office, Kuching, SarawakBrown, W.H.,1978,Timbers of the World, No. 4 South East Asia,TRADA, Red Booklet SeriesBurgess, P.F.,1966,Timbers of Sabah,Sabah Forest Record, no.6Eddowes, P.J.,1977,Commercial Timbers of Papua New Guinea: Their Properties and Uses,Hebano Press, Port Moresby, Papua New GuineaKeating, 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,1Kraemer, J.H.,1951,Trees of the Western Pacific Region,West Lafayette, Indiana U.S.A.Little, E.L., Wadsworth, F.H.,1964,Common Trees of Puerto Rico and the Virgin Islands,U.S.A. Department of Agriculture, Agriculture Handbook,No.249Little, E.L.,1948,A Collection of Tree Specimens from Western Ecuador,Caribbean Forester,9(3,pp215-98Longwood, F.R.,1961,Puerto Rican Woods - Their Machining Seasoning and Related Characteristics,U.S.A. Department of Agriculture, Agriculture Handbook,No.205Ng, F.S.P.,1978,Tree Flora of Malaya A Manual for Foresters Volume 3,Forest Department Ministry of Primary Industries MalaysiaReyes, L.J.,1938,Philippine Woods,Commonwealth of the Philippines Department of Agriculture and Commerce,Technical Bulletin,No.7Swabey, C.,1941,The Principal Timbers of Jamaica,Department of Science and Agriculture Jamaica Bulletin No.29Takahashi, A.,1978,Compilation of Data on the Mechanical Properties of Foreign Woods (Part,III) Africa,Shimane University, Japan, Research Report on Foreign Wood No. 7
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