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
Comments
Common Names
Common Uses
Countries of Distribution
Cutting Resistance
Distribution Overview
Drying Defects
Ease of Drying
Environmental Profile
Gluing
Grain
Heartwood Color
Kiln Drying Rate
Luster
Mortising
Moulding
Nailing
Natural Durability
Natural Growth Defects
Numerical Data
Odor
Planing
Polishing
Product Sources
References
Regions of Distribution
Resistance to Impregnation
Response to Hand Tools
Routing & Recessing
Sanding
Sapwood Color
Scientific Name
Texture
Trade Name
Tree Size
Turning
| |
Common Names
Angkol, Bolsobak, Dangkhao, Doi, Kelat, Mao
Regions of Distribution
Oceania and S.E. Asia
Countries of Distribution
[VIEW MAP]
Fiji, India, Malaysia, Myanmar, Philippines, Thailand
Common Uses
Beams, Bridge beams, Bridge construction, Bridge joists, Building materials, Crossties, Domestic flooring, Factory flooring, Flooring, Foundation posts, Marine construction, Parquet flooring, Pile-driver cushions, Piling, Poles, Posts, Rafters, Railroad ties, Roofing, Shipbuilding, Stakes, Structural work, Sub-flooring, Utility poles, Wharf construction
Environmental Profile
| Status has not been officially assessed |
|
|
|
|
|
|
|
|
|
|
|
|
Distribution Overview
Lowlands and mountains of the Malay Peninsula, extending into the western Pacific islands.
Heartwood Color
| Brown |
|
|
|
|
|
|
|
|
|
|
|
|
| Yellow |
|
|
|
|
|
|
|
|
|
|
|
|
| Orange |
|
|
|
|
|
|
|
|
|
|
|
|
| | | | | | | | | | | | |
| Red |
|
|
|
|
|
|
|
|
|
|
|
|
| Pale red to pink |
|
|
|
|
|
|
|
|
|
|
|
|
| Greenish to greyish |
|
|
|
|
|
|
|
|
|
|
|
|
| Brown |
|
|
|
|
|
|
|
|
|
|
|
|
Sapwood Color
| Brown |
|
|
|
|
|
|
|
|
|
|
|
|
| Yellow |
|
|
|
|
|
|
|
|
|
|
|
|
| | | | | | | | | | | | |
| Color not distinct from heartwood |
|
|
|
|
|
|
|
|
|
|
|
|
Gray
Grain
| Closed |
|
|
|
|
|
|
|
|
|
|
|
|
| Figure |
|
|
|
|
|
|
|
|
|
|
|
|
| Interlocked |
|
|
|
|
|
|
|
|
|
|
|
|
| Wavy |
|
|
|
|
|
|
|
|
|
|
|
|
The wood is described as figureless and rather plain in appearance.
Texture
| Medium |
|
|
|
|
|
|
|
|
|
|
|
|
| Fine |
|
|
|
|
|
|
|
|
|
|
|
|
| Resinous and oily |
|
|
|
|
|
|
|
|
|
|
|
|
| | | | | | | | | | | | |
| Moderately fine and even |
|
|
|
|
|
|
|
|
|
|
|
|
Luster
| High |
|
|
|
|
|
|
|
|
|
|
|
|
| Medium |
|
|
|
|
|
|
|
|
|
|
|
|
| | | | | | | | | | | | |
| Slightly lustrous |
|
|
|
|
|
|
|
|
|
|
|
|
Natural Growth Defects
Natural Durability
| Very durable |
|
|
|
|
|
|
|
|
|
|
|
|
| Resistant to powder post beetles |
|
|
|
|
|
|
|
|
|
|
|
|
| Susceptible to insect attack |
|
|
|
|
|
|
|
|
|
|
|
|
| Durable |
|
|
|
|
|
|
|
|
|
|
|
|
| Resistant to termites |
|
|
|
|
|
|
|
|
|
|
|
|
| | | | | | | | | | | | |
| Moderately durable |
|
|
|
|
|
|
|
|
|
|
|
|
Resistance to attack by pinhole borers and termites is also rated as moderate
Odor
| No specific smell or taste |
|
|
|
|
|
|
|
|
|
|
|
|
Drying Defects
| Checking |
|
|
|
|
|
|
|
|
|
|
|
|
| | | | | | | | | | | | |
| Moderate end spitting |
|
|
|
|
|
|
|
|
|
|
|
|
Ease of Drying
| Fairly Easy |
|
|
|
|
|
|
|
|
|
|
|
|
| Thick Stock Requires Care |
|
|
|
|
|
|
|
|
|
|
|
|
| Slowly |
|
|
|
|
|
|
|
|
|
|
|
|
| Moderately Difficult to Difficult |
|
|
|
|
|
|
|
|
|
|
|
|
| | | | | | | | | | | | |
| Requires slow and careful seasoning to prevent degrade. |
|
|
|
|
|
|
|
|
|
|
|
|
| Dries slowly |
|
|
|
|
|
|
|
|
|
|
|
|
Quartersawn dries with little degrade Weighting down of stacks and end-coating are recommended
Kiln Drying Rate
Tree Size
| Tree height is 30-40 m |
|
|
|
|
|
|
|
|
|
|
|
|
| Tree height is 20-30 m |
|
|
|
|
|
|
|
|
|
|
|
|
| Trunk diameter is 100-150 cm |
|
|
|
|
|
|
|
|
|
|
|
|
| Trunk diameter is 150-200 cm |
|
|
|
|
|
|
|
|
|
|
|
|
Product Sources
Some species in the genus are reported to yield edible fruit, while others have an inner bark that produce tannin for curing leather and for toughening nets.
Comments
Variable weigt
Blunting Effect
Boring
| Fairly easy to very easy |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair to good results |
|
|
|
|
|
|
|
|
|
|
|
|
| Fairly difficult to very difficult |
|
|
|
|
|
|
|
|
|
|
|
|
Carving
Cutting Resistance
| Fairly Difficult to Very Difficult to saw |
|
|
|
|
|
|
|
|
|
|
|
|
| | | | | | | | | | | | |
| Saws cleanly with moderate blutning of cutting edges |
|
|
|
|
|
|
|
|
|
|
|
|
| Cuts well |
|
|
|
|
|
|
|
|
|
|
|
|
Gluing
| Fairly Difficult to Very Difficult |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair to Good Results |
|
|
|
|
|
|
|
|
|
|
|
|
| Fairly Easy to Very Easy |
|
|
|
|
|
|
|
|
|
|
|
|
Mortising
| Fairly Difficult to Very Difficult |
|
|
|
|
|
|
|
|
|
|
|
|
Moulding
| Fair to Good Results |
|
|
|
|
|
|
|
|
|
|
|
|
| Fairly Difficult to Very Difficult |
|
|
|
|
|
|
|
|
|
|
|
|
Nailing
| Very Good to Excellent Results |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair to Good Results |
|
|
|
|
|
|
|
|
|
|
|
|
| | | | | | | | | | | | |
| Tends to split during nailing |
|
|
|
|
|
|
|
|
|
|
|
|
| Pre-boring recommended |
|
|
|
|
|
|
|
|
|
|
|
|
Planing
| Fair to Good Results |
|
|
|
|
|
|
|
|
|
|
|
|
| Fairly Difficult to Very Difficult |
|
|
|
|
|
|
|
|
|
|
|
|
| | | | | | | | | | | | |
| Hard, heavy, and strong |
|
|
|
|
|
|
|
|
|
|
|
|
Yield clean and smooth, but lusterless surfaces
Resistance to Impregnation
| Resistant heartwood |
|
|
|
|
|
|
|
|
|
|
|
|
| Resistant sapwood |
|
|
|
|
|
|
|
|
|
|
|
|
| | | | | | | | | | | | |
| Heartwood is resistant to impregnation |
|
|
|
|
|
|
|
|
|
|
|
|
Sapwood permeability ranges from treatable to moderately resistant
Response to Hand Tools
| Fairly Difficult to Difficult to Work |
|
|
|
|
|
|
|
|
|
|
|
|
| Easy to Work |
|
|
|
|
|
|
|
|
|
|
|
|
| | | | | | | | | | | | |
| Responds well to hand tools |
|
|
|
|
|
|
|
|
|
|
|
|
Routing & Recessing
| Fair to Good Results |
|
|
|
|
|
|
|
|
|
|
|
|
| Fairly Difficult to Very Difficult |
|
|
|
|
|
|
|
|
|
|
|
|
| Fairly Easy to Very Easy |
|
|
|
|
|
|
|
|
|
|
|
|
Sanding
| Fair to Good Results |
|
|
|
|
|
|
|
|
|
|
|
|
| | | | | | | | | | | | |
| Contains alkaloids giving it good acid resistance |
|
|
|
|
|
|
|
|
|
|
|
|
Turning
| Fairly Easy to Very Easy |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair to Good Results |
|
|
|
|
|
|
|
|
|
|
|
|
| Fairly Difficult to Very Difficult |
|
|
|
|
|
|
|
|
|
|
|
|
| Very Good to Excellent Results |
|
|
|
|
|
|
|
|
|
|
|
|
| | | | | | | | | | | | |
| Yields clean surfaces |
|
|
|
|
|
|
|
|
|
|
|
|
| Turned surfaces tend to be rough |
|
|
|
|
|
|
|
|
|
|
|
|
| Responds readily to most ordinary tools |
|
|
|
|
|
|
|
|
|
|
|
|
Polishing
| Fair to Good Results |
|
|
|
|
|
|
|
|
|
|
|
|
| | | | | | | | | | | | |
| Good results |
|
|
|
|
|
|
|
|
|
|
|
|
Numerical Data
| Item | Green | Dry | English |
| | | |
| Bending Strength | 9506 | 13818 | psi |
| Density | | 40 | lbs/ft3 |
| Hardness | | 897 | lbs |
| Maximum Crushing Strength | 4900 | 7526 | psi |
| Shearing Strength | | 1352 | psi |
| Static Bending | 6125 | 8389 | psi |
| Stiffness | 1529 | 1784 | 1000 psi |
| Toughness | | 114 | inch-lbs |
| Specific Gravity | 0.61 | | |
| Radial Shrinkage | 4 | | % |
| Tangential Shrinkage | 8 | | % |
| Volumetric Shrinkage | 15 | | % |
| | | |
| Item | Green | Dry | Metric |
| | | |
| Bending Strength | 668 | 971 | kg/cm2 |
| Density | | 641 | kg/m3 |
| Hardness | | 406 | kg |
| Maximum Crushing Strength | 344 | 529 | kg/cm2 |
| Shearing Strength | | 95 | kg/cm2 |
| Static Bending | 430 | 589 | kg/cm2 |
| Stiffness | 107 | 125 | 1000 kg/cm2 |
| Toughness | | 131 | cm-kg |
| Specific Gravity | 0.61 | | |
| Radial Shrinkage | 4 | | % |
| Tangential Shrinkage | 8 | | % |
References
Chudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.
Desch, H. E. 1954. Manual of Malayan Timbers - Volume II. Malayan Forest Records, No. 15. Malaya Publishing House Ltd., Singapore.
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
|
|