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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)
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.
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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