Vaivai-ni-veikau (Serianthes myriadenia)
Family: Mimosaceae
Common names: Vaivai, Vaivai-ni-veikau
Distributed in: Fiji [Polynesia], Fiji (Oceania and S.E. Asia)
Common uses: Balusters, Bedroom suites, Boat building (general), Boat building, Boat building: decking, Boat building: planking, Building construction, Building materials, Cabinetmaking, Canoes, Carvings, Chairs, Chests, Concealed parts (Furniture), Construction, Core Stock, Decorative plywood, Decorative veneer, Desks, Dining-room furniture, Dowell pins, Dowells, Drawer sides, Excelsior, Figured veneer, Fine furniture, Floor lamps, Flooring, Furniture , Furniture components, Furniture squares or stock, Furniture, Hatracks, Heavy construction, Interior construction, Interior trim, Joinery, Kitchen cabinets, Lifeboats, Light construction, Living-room suites, Millwork, Moldings, Office furniture, Plain veneer, Plywood, Pulp/Paper products, Roofing, Shipbuilding, Structural work, Turnery, Vehicle parts, Veneer
Environment profile: Status has not been officially assessed
Tree size: Trunk diameter is 150-200 cm
Colors: the heart isYellow to golden-yellow to orange, Yellow-Brown to bright yellow, often with a greenish tinge and the sapwoodWhite to yellow, Yellow.The grain isStraight, the textureCoarse
and the lusterLustrous
Natural durability: Satisfactory resistance to decay above ground , Susceptible to attack from powder post (Lyctid & Bostrychid) beetles
Odor: No distinct odor or taste
Kiln Schedules: Kiln Drying Rate (in days) is rather slow
Kiln Drying Rate: Kiln drying rate (green to 12% mc) is rather slow, typically from 18-28 days for a board under 32 mm, to 52-84 days for a board 63 mm and thicker.
Drying Defects: Slight surface checking, Splitting
Ease of Drying: Variable, but good seasoning properties
Comments: Abnormal Wood Tissue Orange-Red deposits are reported to often be present Small compression failure and ingrown bark are some common defects in logs Tension wood is present in some logs
Blunting Effect: Moderate
Boring: Good boring properties
Carving: Poor to Very Poor Results
Cutting Resistance: Saws well in both green and seasoned conditions
Gluing: Fairly Difficult to Very Difficult
Mortising: Fairly good mortising properties, except in material with tension wood
Moulding: Good moulding properties
Movement in Service: Good moulding properties
Nailing: Pre-Boring Recommended, Tends to split during nailing
Planing: Responds well to ordinary tools in mortising
Resistance to Impregnation: Resistant sapwood
Resistance to Splitting: Poor
Response to hand tools: Responds well to hand tools
Routing recessing: Routs well
Sanding: Good sanding properties
Veneering qualities: Easy to cut, Suitable for peeling
Steam bending: Fairly Difficult to Very Difficult
Screwing: Poor to Very Poor Results
; Turning: Yields fairly smooth surfaces
Polishing: Good polishing properties after filling ;
- Numerical data Metric
- Numerical data English
- Strength properties
- References
|
|
|
|
Item |
Green |
Dry |
Metric |
Specific Gravity |
0,42 |
0,43 |
|
Density |
|
480 |
kg/m3 |
Bending Strength |
506 |
772 |
kg/cm2 |
Crushing Strength |
35 |
56 |
kg/cm2 |
Hardness |
|
393 |
kg |
Impact Strength |
|
|
cm |
Shearing Strength |
|
95 |
kg/cm2 |
Stiffness |
93 |
113 |
1000 kg/cm2 |
Tangential Shrinkage |
|
|
% |
Radial Shrinkage |
2 |
|
% |
Weight |
496 |
400 |
kg/m3 |
Maximum Load |
|
|
cm-kg/cm3 |
Toughness |
|
132 |
cm-kg |
Static Bending |
326 |
502 |
kg/cm2 |
|
| | | | Item | Green | Dry | English | Bending Strength | 7208 | 10985 | psi | Crushing Strength | 505 | 804 | psi | Density | | 30 | lbs/ft3 | Hardness | | 867 | lbs | Maximum Crushing Strength | 3652 | 6318 | psi | Shearing Strength | | 1365 | psi | Static Bending | 4645 | 7154 | psi | Stiffness | 1324 | 1608 | 1000 psi | Toughness | | 115 | inch-lbs | Specific Gravity | 0.42 | 0.43 | | Weight | 31 | 25 | lbs/ft3 | Radial Shrinkage | 2 | | % | Tangential Shrinkage | 5 | | % | |
Density (dry weight) = 31-37 lbs/cu. ft. 1 Bending strength (MOR) = low Shrinkage, Radial = very small Modulus of Elasticity (stiffness) = low Max. crushing strength = medium Shrinkage, Tangential = small Shrinkage, Tangential = very small Shearing strength (parallel to grain) = very low Shearing strength (parallel to grain) = low Hardness (side grain) = soft Resists wearing and marring Modulus of Elasticity (stiffness) = very low Max. crushing strength = low Hardness = medium Density=Average/Medium Crushing strength = high Compression strength (parallel to grain) = high Bending strength in the air-dry condition (about 12%moisture content)is high-comparable to Teak
Alston, A.S.,1966,Natural Heartwood Durability,Fiji Forestry Department, Suva. Fiji timbers and their uses No. 2Alston, A.S.,1966,Powder Post Beetle Lyctus Species,Fiji Forestry Department, Suva. Fiji timbers and their uses No.6Alston, A.S.,1982,Timbers of Fiji: Properties and potential uses,Fiji Forestry Department, SuvaBolza, E., Kloot, N.H.,1972,The Mechanical Properties of 56 Fijian Timbers,Australia C.S.I.R.O. Division of Forest Products Technological Paper,No.,62Fiji Department of Forestry,1968,The properties and potential uses of Vaivai-ni-Veikau (Serianthes,myriadenia,Fiji Forestry Department, Suva. Summary of the C.S.I.R.O. investigations,,Fiji timbers and their uses No.34Fiji Department of Forestry,1969,A Summary of the Properties of 34 Indigenous Timbers,Fiji Forestry Department, Suva. Fiji timbers and their uses No.38Fiji Department of Forestry,1972,Guide to the use of local timbers,Fiji Forestry Department, Suva. Fiji timbers and their uses No.55Fiji Forestry Department,1981,The Properties and Uses of 43 Indigenous and Exotic Timbers,Fiji Forestry Department, Fiji Timbers and their Uses No.71Keating, 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,1Trotter, H.,1940,Manual of Indian Forest Utilization,O.U.P. Indian Branch, Calcutta
|