Perupok (Lophopetalum duperreanum)
Family: Celastraceae
Common names: Balpale, Banate, DualAdau, Mata ulat, Perupok, Sang trang, Seng sa, Song sa, Taung-yemare
Distributed in: Brunei, India, Indonesia, Malaysia, Myanmar, Thailand, Vietnam (Oceania and S.E. Asia)
Distribution overview: Species in the Lophopetalum genus are found in the Indo-Malayan region, North Borneo, and Indonesia.
Common uses: Balusters, Bent Parts, Blockboard, Boat building, Boxes and crates, Building construction, Building materials, Cabinetmaking, Canoes, Casks, Chairs, Chests, Construction, Cutting surfaces, Decorative plywood, Desks, Dining-room furniture, Domestic flooring, Drawer sides, Excelsior, Fine furniture, Flooring, Furniture , Furniture components, Furniture squares or stock, Hardboards, Hatracks, Interior construction, Interior trim, Joinery, Kitchen cabinets, Lifeboats, Light construction, Living-room suites, Millwork, Moldings, Office furniture, Packing cases, Parquet flooring, Particleboard, Pulpwood, Turnery
Environment profile:
The environmental status of this species within its natural habitat has not been officially assessed
Tree size: Tree height is 30-40 m
Colors: the heart isPurple, Redand the sapwoodWhite, Yellow.The grain isStraight to shallowly interlocked, the textureMediumand the lusterMedium
Natural durability: Resistant to termites, Susceptible to insect attack
Odor: No distinct taste
Freshly-Cut wood temporarily smells like carnations
Kiln Drying Rate: Naturally dries slowly
Drying Defects: Distortion, Splitting
Ease of Drying: Variable
Blunting Effect: Blunting effect on machining is slight
Boring: Fairly easy to very easy
Carving: Good results
Cutting Resistance: Easy to saw
The wood has very little cutting resistance
Gluing: Fairly Easy to Very Easy
Mortising: good
Moulding: Good moulding properties
Movement in Service: Good moulding properties
Planing: Fairly Easy to Very Easy
Resistance to Impregnation: Sapwood is permeable
Response to hand tools: Responds well
Routing recessing: Fairly Easy to Very Easy
Veneering qualities: Veneers easily, Veneers moderately easy
Turning: Very Good to Excellent Results
Polishing: Very Good to Excellent; Varnishing: Poor to Very Poor;
- Numerical data Metric
- Numerical data English
- Strength properties
- References
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 |
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Item |
Green |
Dry |
Metric |
Specific Gravity |
0,42 |
|
|
Density |
|
544 |
kg/m3 |
Bending Strength |
394 |
609 |
kg/cm2 |
Crushing Strength |
199 |
372 |
kg/cm2 |
Hardness |
|
|
kg |
Impact Strength |
|
|
cm |
Shearing Strength |
|
96 |
kg/cm2 |
Stiffness |
73 |
80 |
1000 kg/cm2 |
Tangential Shrinkage |
6 |
|
% |
Radial Shrinkage |
3 |
|
% |
Weight |
528 |
432 |
kg/m3 |
Maximum Load |
|
|
cm-kg/cm3 |
Toughness |
|
194 |
cm-kg |
Static Bending |
|
|
kg/cm2 |
|
 |  |  |  | Item | Green | Dry | English | Bending Strength | 5615 | 8673 | psi | Density | | 34 | lbs/ft3 | Maximum Crushing Strength | 2842 | 5292 | psi | Shearing Strength | | 1378 | psi | Stiffness | 1049 | 1142 | 1000 psi | Toughness | | 169 | inch-lbs | Specific Gravity | 0.42 | | | Weight | 33 | 27. | lbs/ft3 | Radial Shrinkage | 3 | | % | Tangential Shrinkage | 6 | | % | Volumetric Shrinkage | 9 | | % | |
Max. crushing strength = low Compression strength (parallel to grain) = low
Bending strength in the air-dried condition (about 12% moisture content) is medium, but lower than Mahogany, and much lower than White oak. It is weaker than Mahogany or Teak. The weight is about average. The wood is high in density
Chudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.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
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