Haiari (Alexa imperatricis)
Family: Leguminosae
Common names: Aroemata, Crook, Haiari, Haiariballi, Kapai, Koatoi, Leche de cochino, Neko-oudoo
Distributed in: Brazil, Guyana, Suriname, Venezuela (Central America, Latin America)
Distribution overview: Found in the Venezuelan Guiana, Guyana, Surinam, and the Brazilian Amazon region. Often dominant on the light-colored sands of the northwest and upper Mozaruni district and the Pakaraima Mountains in Guyana.
Common uses: Boxes and crates, Construction, Furniture, Interior construction, Joinery, Light construction, Millwork, Plywood, Pulp/Paper products, Veneer: decorative
Environment profile: Status unknown in many of its growth areas
Tree size: Tree height is 40-50 m
Colors: the heart isYellow to golden-yellow to orange, Yellowish tanand the sapwoodWhite to yellow, Yellow.The grain isWeak figure, the textureMedium to coarseand the lusterSlightly lustrous
Natural durability: Very durable, Very durable
Odor: No specific smell or taste
Kiln Schedules: Uk=B US=T2C2/T2C1 Fr=2/T2 - C2 (4/4); T2 - C1 (8/4) US
Drying Defects: Moderate end spitting, Splitting
Ease of Drying: Fairly Easy
Tree Identification: Bole/stem form is straight
Comments: General finishing qualities are rated as good General finishing qualities are rated as satisfactory
Boring: Good (75+ pieces out of 100 will yield good to excellent results)
Carving: Good results
Cutting Resistance: Easy to saw
Gluing: Moderate gluing properties
Mortising: Finishes well
Moulding: Good moulding properties
Movement in Service: Good moulding properties
Nailing: Fairly Easy to Very Easy, Holds satisfactorily
Planing: Planes to a satisfactory finish
Resistance to Impregnation: Sapwood is permeable
Response to hand tools: Responds well to hand tools
Routing recessing: Fairly Easy to Very Easy
Sanding: Fairly Easy to Very Easy
Veneering qualities: Veneers easily, Veneers moderately easy
Turning: Fairly Easy to Very Easy
- Numerical data Metric
- Numerical data English
- Strength properties
- References
 |
 |
 |
 |
Item |
Green |
Dry |
Metric |
Specific Gravity |
|
0,32 |
|
Density |
|
512 |
kg/m3 |
Bending Strength |
485 |
742 |
kg/cm2 |
Crushing Strength |
380 |
482 |
kg/cm2 |
Hardness |
|
386 |
kg |
Impact Strength |
|
|
cm |
Shearing Strength |
|
|
kg/cm2 |
Stiffness |
117 |
128 |
1000 kg/cm2 |
Tangential Shrinkage |
8 |
|
% |
Radial Shrinkage |
4 |
|
% |
Weight |
496 |
416 |
kg/m3 |
Maximum Load |
|
|
cm-kg/cm3 |
Toughness |
|
133 |
cm-kg |
Static Bending |
|
|
kg/cm2 |
|
 |  |  |  | Item | Green | Dry | English | Bending Strength | 6911 | 10557 | psi | Density | | 32 | lbs/ft3 | Hardness | | 852 | lbs | Maximum Crushing Strength | 5408 | 6866 | psi | Stiffness | 1665 | 1826 | 1000 psi | Toughness | | 116 | inch-lbs | Specific Gravity | | 0.32 | | Weight | 31 | 26 | lbs/ft3 | Radial Shrinkage | 4 | | % | Tangential Shrinkage | 8 | | % | Volumetric Shrinkage | 12 | | % | |
Bending strength (MOR) = low Density (dry weight) = 31-37 lbs/cu. ft. Shrinkage, Volumetric = moderate Shrinkage, Volumetric = large Shrinkage, Tangential = large Shrinkage, Tangential = fairly large Shrinkage, Radial = moderate Shrinkage, Radial = fairly large Modulus of Elasticity = moderate Max. crushing strength = medium Max. crushing strength = high Hardness (side grain) = soft Bending strength (MOR) = medium
Berni, C.A., Bolza, E., Christensen, F.J.,1979,South American Timbers - The Characteristics, Properties and Uses of 190,Species,C.S.I.R.O Div. Building ResearchBoone, R.S., C.J. Kozlik, P.J. Bois and E,M. Wengert. 1988. Dry Kiln Schedules for Commercial Woods:Temperate and Tropical. USDA, Forest Service, General Technical Report FPL-GTR-57, Forest Products Laboratory, Madison, Wisconsin.Chudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.Erfurth, T., Rusche, H.,1976,The Marketing of Tropical Wood B. Wood Species from S. American Tropical,Moist Forests,F.A.O. Forestry DepartmentFanshawe, D.B.,1954,Forest Products of British Guiana Part 1 Principal Timbers,Forest Department British Guiana Forestry Bulletin (New Series 2nd,Edition,No.1Guyana Forestry Department,1971,Know Your Woods - Haiariballi (Alexa imperatricis,Forest Department, Guyana Forest Industries Newsletter 1(2,p1Longwood, F.R.,1962,Commercial Timbers of the Caribbean,U.S.A. Department of Agriculture, Agriculture Handbook,No.207Polak, A.M.,1992,Major Timber Trees of Guyana A Field Guide,The Tropenbos Foundation Wageningen, The NetherlandsRecord, S.J., Hess, R.W.,1943,Timbers of the New World,Yale University PressSlooten, H.J. van der,1970,Evaluation Study of eighteen Wood Species from Guyana for Veneer and,Plywood Manufacture,Forest Industries Development Survey FAO Report SF/GUY9 Tech. Report,No.13,U.N.D.P.Takahashi, A.,1975,Compilation of data on the Mechanical Properties of Foreign Woods (Part 2,Central and South America,Shimane University, Japan, Research Report on Foreign Wood No.4WCMC. 1992. Conservation Status Listing - Trees and Timbers of the World. World Conservation Monitoring Center-Plants Programme, Cambridge, CB3 ODL, United Kingdom.
|