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DEDALI (Strombosia javanica)

Trade Name

Dedali

Scientific Name

Strombosia javanica Blume

Family

OLACACEAE

Common Names

Banatha (Myanmar); Belian landak (Malaysia); Dedali badak (Malaysia); Bayan (Malaysia); Wuwusu (Indonesia); Kayu kacang (Indonesia); Entelung (Sumatra); Belian landak (Sarawak); Petaling gajah (Malaysia); Entelung (Indonesia); Kamap (Malaysia)

Description Of The Tree

Botanical Description

It is a tree to 40 m tall, 100 cm diameter. The bole is straight, often with knobs.

Natural Habitat

Strombosia is found scattered in primary evergreen lowland rain forests, from the sea level up to 800 m of altitude. Not enough information available to apply the criterrion.(CITES,?,1997)

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Wood Identification

Anatomic Description Of Wood

Wood diffuse porous. Occasionally vessels in radial multiples of 4 or more common. Tangential diameter of vessel lumina 100 micras or less (very small). Occasionally tyloses common. Vessels per mm2 more than 20 (very abundant). Vessel-ray pits reticulate and/o Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Occasionally apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Occasionally prismatic crystals in chambered axial parenchyma cells and/or in fibers. 5 to 8 cells per parenchy Rays more than 10 per mm (abundant). Ray height more than 1 mm. Occasionally rays exclusively uniseriate. Prismatic crystals in the ray cells. Body ray cells procumbent with over 4 rows of upright and/or square marginal cells (Kribs-I). Body ray cells procumbe Fibers very thick walled. Fibers with simple to minutely bordered pits.

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

Availability

Cites Status

Unrestricted

General Wood Description

Color

The heartwood is pale yellow with an olive-brown tinge, darkening to pale orange-brown, moderately sharply differentiated from the paler sapwood.

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

5

Grain

The grain is usually straight or interlocked.

Texture

Texture is usually fine to moderately fine.

Natural Durability

The wood is moderately durable when exposed to the weather or in contact with the ground.

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

3

Resistance To Impregnation

It is difficult to impregnate.

Wood Physical Properties

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

0.58

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

0.64

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

8.7

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

3.6

Drying Defects

Ease of Drying: Drying is very slow and difficult to perform; defects are frequent. Drying Defects: Risks of checks. Kiln Schedules: Schedule proposed as a reference by comparison with well known species taking into account to the general technological behavior of this species.

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

2.4

Wood Chemical Properties

Wood Mechanical Properties

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

805

Stiffness (MOE) 12%MC (kgf/cm²)

113822

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

408

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

41

Shear strength radial 12%MC (kgf/cm²)

92

Janka hardness (side) 12%MC (kgf)

325

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

332

Workability

Sawing

Sawing of this species is easy.

Planing

It is easy to plane although the radial surface is slightly rough due to picking up of the grain.

REFERENCED USES

End Uses Summary

HOUSING GENERAL, flooring, FURNITURE AND CABINETS, cabinets, PLYWOOD AND VENEER, BENDING, tennis rackets, PACKING, pallets

General Housing
  • 10 - Silica in Timbers
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
Bending
  • 35 - Embassy of Myanmar in Japan
Tennis Rackets
  • 37 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
Packing
  • 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Pallets
  • 48 - The strength properties of timbers

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