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KELEDANG (Artocarpus lanceifolius)
Trade Name
Keledang
Scientific Name
Artocarpus lanceifolius Roxb.
Family
MORACEAE
Common Names
Keledang (Indonesia); Khanun pa (Thailand); Keledang (Malaysia); Bangsal (Borneo); Keledang (Borneo); Keledang (Sumatra)
Description Of The Tree
Botanical Description
It is a medium-sized to fairly large evergreen tree up to 36 m tall. The bole is straight and branchless for up to 25 m, up to 85 cm in diameter, with short buttresses.
Natural Habitat
It is fairly common in evergreen lowland or hill forests, in a range between 600 to 1,100 m of altitude.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Tangential diameter of vessel lumina 200 micras or more (large). Colored deposits in heartwood vessels. Tyloses sclerotic. Tyloses common. Vessels per mm2 5 to 20. Vessel-ray pits reticulate and/or foraminate. Simple perforation plates. Inter Occasionally axial parenchyma in marginal or in seemingly marginal bands. Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma winged aliform (uni or bilateral winged). 3 4 to 10 rays per mm (medium). Larger rays more than 4 seriate. Occasionally sheath cells. Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kribs-II). Fibers with simple to minutely bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Color
The sapwood is light yellow or straw, clearly demarcated. The heartwood is orange or olive-brown, darkening with age.
COLOR INDEX (1=Black, 7=Light yellow,white)
4
Grain
The grain is deeply interlocked, fibrous.
Texture
The wood is typically medium in texture.
Natural Durability
Pinhole borers often attack the sapwood, but the timber is resistant to termites and considerably resistant to marine borers.
Natural durability index (1= Very high durability, 7=Vey low durability)
6
Internal Growth Stresses
Timber of this species contains residual stresses.
Silica Content
Silica Content: Silica is absent. Silica Value: 0
Resistance To Impregnation
The heartwood is very difficult to impregnate, sapwood absorbs preservatives readily.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.69
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.77
Total shrinkage Tangential (Saturated to 0%MC) (%)
6.3
Total shrinkage Radial (Saturated to 0%MC) (%)
2.9
Recommended Dry Kiln Schedule
JP-25; UK-F; US-35-44
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
2.2
Wood Chemical Properties
Wood Mechanical Properties
Compression parallel to fiber 12%MC (kgf/cm²)
667
Compression perpendicular to fiber 12%MC (kgf/cm²)
97
Shear strength radial 12%MC (kgf/cm²)
112
Janka hardness (side) 12%MC (kgf)
771
Janka hardness (end grain) 12%MC (kgf)
771
Workability
Sawing
Sawing of this species is difficult.
Rotary Veneer Cutting
Lamination of this species is possible.
Sliced Veneer
Lamination of this species is possible.
Blunting Effect
It is considered to have a severe blunting effect on the cutting elements.
Machining
Interlocked grain causes problems, special cutters are required.
Planing
The wood can be planed to a smooth surface, but there is some picking up on the radial.
Boring
Boring operations are fair to difficult.
Nailing
This species is reported to have a good nailing behavior.
Gluing
The timber is reported to glue well.
Finishing
Finishing is difficult and the surfaces are often rough.
REFERENCED USES
End Uses Summary
EXTERIOR GENERAL, poles, HOUSING GENERAL, beams, boards, flooring, FURNITURE AND CABINETS, cabinets, PLYWOOD AND VENEER, SPORTS, TOOLS, tool handles, agricultural tools, PACKING, CONTAINERS, truck bodies, truck flooring, NAVAL CONSTRUCTION, OTHER AND MUSICAL INSTRUMENTS, coffin
Exterior General
- 1 - Tabela de resultados de ensaios fisicos e mecanicos
Poles
- 3 - Estudo dendrologico e determinacao das caracteristicas fisicas e mecanicas do genipapo (Genipa americana)
General Housing
- 10 - Silica in Timbers
Beams
- 11 - Prospect: The wood database
Boards
- 13 - Dry kiln schedules for commercial woods. Temperate and tropical. Section III. Latin American (Mexico, Central, and South America) Woods–Conventional Temperatures
Flooring
- 14 - Handbook of Hardwoods
Furniture Cabinets
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Cabinet
- 24 - Empire Timbers
Panels, Veneers
- 25 - Directory of Timber Trade Malaysia
Sports
- 38 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
Tools
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Tool Handles
- 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
Agricultural Tools
- 44 - Atlas of Peruvian Woods
Packing
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Truck Body
- 53 - Timbers of the New World
Truck Flooring
- 54 - Bulletin of the Government Forest Experiment Station N.157: Identification of Tropical Woods
Shipbuilding
- 55 - Tropical Timber Atlas of Latin America
Other & Musical Instruments
- 63 - Madeiras do Brazil II
Coffin
- 78 - Amazonian Timbers for the International Market
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