JACK, (Artocarpus heterophyllus)
Trade Name
Jack,
Scientific Name
Artocarpus heterophyllus Lamk
Family
Moraceae
Common Names
pilavu (India); kathal (India)
Scientific Name Synonyms
A.integnfilia Linn
Description Of The Tree
Botanical Description
Medium to large, 18-25 m in height, and up to 120 cm in diameter. Bark blackish, mottled with black and green, rough with warty excerescences.
Natural Distribution
West coast tropical evergreen and Southern hill-top tropical evergreen forests; widely cultivated
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Tangential diameter of vessel lumina 200 micras or more (large). Vessels per mm2 less than 6 (rare). Vessels in radial multiples of 2 to 4. Tyloses common. White deposits in heartwood vessels. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma aliform. Rays 1 to 4 seriate.
Availability
Cites Status
Unrestricted
General Wood Description
Color
Sapwood greyish or pale yellow, heart wood yellow to yellowish-brown or pinkish- brown, lustrous when first exposed
COLOR INDEX (1=Black, 7=Light yellow,white)
6
Grain
Straight to interlocked
Texture
texture medium
Natural Durability
Very durable
Natural durability index (1= Very high durability, 7=Vey low durability)
1
Wood Physical Properties
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.60
Total shrinkage Tangential (Saturated to 0%MC) (%)
8.4
Total shrinkage Radial (Saturated to 0%MC) (%)
43.0
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
0.2
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
806
Stiffness (MOE) 12%MC (kgf/cm²)
100700
Workability
Sawing
Easy to saw and work
Turning
30
Finishing
can be brought to a smooth finish and takes good polish
REFERENCED USES
End Uses Summary
HOUSING GENERAL, beams, boards, FURNITURE AND CABINETS, cabinets, PLYWOOD AND VENEER, faces, cores, TURNING, TOOLS, CONTAINERS, truck bodies, NAVAL CONSTRUCTION, boats, OTHER AND MUSICAL INSTRUMENTS, handicrafts
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
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
Faces
- 26 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
Cores
- 27 - Embassy of Brazil in Japan
Turning
- 30 - Embassy of Honduras in Japan
Tools
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Containers
- 50 - Properties of imported tropical woods
Truck Body
- 53 - Timbers of the New World
Shipbuilding
- 55 - Tropical Timber Atlas of Latin America
Boats
- 56 - Manual de Identificación de Especies Forestales de la Subregión Andina.
Other & Musical Instruments
- 63 - Madeiras do Brazil II
Handcraft
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
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