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KELEDANG (Artocarpus rigidus)

Trade Name

Keledang

Scientific Name

Artocarpus rigidus Blume

Family

MORACEAE

Common Names

Tempuni (Indonesia); Peing (Myanmar); Cay mit nai (Vietnam); Khanun pa (Thailand); Kundang (Indonesia); Sone padat (Myanmar); Taung (Myanmar); Pala musoh (Sarawak); Temponek (Malaysia); Nangka pipit (Malaysia); Purian (Sumatra); Knor prey (Cambodia); Purian (Indonesia)

Description Of The Tree

Botanical Description

It is a medium-sized to large evergreen tree up to 45 m tall. The bole is up to 115 cm in diameter. The buttresses are short or up to 3 m high.

Natural Habitat

It can be found in evergreen forests on well drained level and hilly locations, up to 900 m of altitude.

Plantations Available?

This species is widely planted in Indonesia for its fruits.

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Wood Identification

Anatomic Description Of Wood

Wood diffuse porous. Tangential diameter of vessel lumina 200 micras or more (large). Colored deposits in heartwood vessels. Vessels per mm2 less than 6 (rare). Vessel-ray pits reticulate and/or foraminate. Simple perforation plates. Axial parenchyma aliform. Axial parenchyma confluent. 4 to 10 rays per mm (medium). Larger rays more than 4 seriate. Sheath cells. Oil and/or mucilage cells associated with the axial and/or ray parenchyma (idioblasts). Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kri Septate fibers present. Fibers with distinctly bordered pits.

  • Wood Macro Photo Tangential Plane
  • Wood Micro Photo Of Transversal Section

Availability

Cites Status

Unrestricted

General Wood Description

Color

The heartwood is orange yellowish-brown, sometimes with an olive-green tinge, generally darkening considerably on exposure and usually well defined from the paler sapwood.

COLOR INDEX (1=Black, 7=Light yellow,white)

4

Grain

The grain is often deeply interlocked.

Texture

The texture is moderately coarse.

Natural Durability

The wood is non-durable to moderately durable, somewhat resistant to termite attack. It is susceptible to powder-post beetle attack.

Natural durability index (1= Very high durability, 7=Vey low durability)

6

Internal Growth Stresses

Timber of this species presents residual stresses.

Resistance To Impregnation

The heartwood is untreatable. The sapwood of keledang is reported to absorb preservatives readily.

Wood Physical Properties

Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)

0.56

Air-dry Density (Weight and volume at 12%MC) (g/cm³)

0.61

Total shrinkage Tangential (Saturated to 0%MC) (%)

6.1

Total shrinkage Radial (Saturated to 0%MC) (%)

2.3

Recommended Dry Kiln Schedule

JP-25; UK-F

Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)

2.7

Wood Chemical Properties

Wood Mechanical Properties

Bending Strength (MOR),12%MC (kgf/cm²)

535

Stiffness (MOE) 12%MC (kgf/cm²)

124573

Compression parallel to fiber 12%MC (kgf/cm²)

484

Shear strength radial 12%MC (kgf/cm²)

107

Janka hardness (side) 12%MC (kgf)

507

Janka hardness (end grain) 12%MC (kgf)

589

Workability

Sawing

Sawing of this species is reported to be rather difficult.

Machining

Interlocked grain causes problems, special cutters are required.

Turning

30

Nailing

This species is reported to have a good nailing behavior.

Gluing

Gluing behavior is reportedly good.

Finishing

Often rough surfaces are reported.

REFERENCED USES

End Uses Summary

EXTERIOR GENERAL, bridges, poles, HOUSING GENERAL, beams, flooring, FURNITURE AND CABINETS, PLYWOOD AND VENEER, TURNING, TOOLS, tool handles, NAVAL CONSTRUCTION, boats, OTHER AND MUSICAL INSTRUMENTS, coffin

Exterior General
  • 1 - Tabela de resultados de ensaios fisicos e mecanicos
Bridges
  • 2 - 25 madeiras da amazonia de valor comercial, caracterizacao, macroscopica, usos comuns e indices qualificativos
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
Flooring
  • 14 - Handbook of Hardwoods
Furniture Cabinets
  • 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Panels, Veneers
  • 25 - Directory of Timber Trade Malaysia
Turning
  • 30 - Embassy of Honduras in Japan
Tools
  • 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Tool Handles
  • 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
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
Coffin
  • 78 - Amazonian Timbers for the International Market

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