DUABANGA (Duabanga grandiflora)
Trade Name
Duabanga
Scientific Name
Duabanga grandiflora (Roxb. ex DC.) Walp.
Family
SONNERATIACEAE
Common Names
Thitkazaw; Thitazaw; Tadetti; Tadet-ko; Shala; Pedada bukit; Myaukugo; Mau-lettanshe; Mai-sa-lao-long; Mai-ka-yong; Ma-u-lettan; Ma-u; Linzin; Lepcha; Lampatia; Laklob; Kokan; Kochan; Khoken; Kaungglaung; Kamaung-yegyi; Jarul-jhalna; Door; Bonderkella; Bolchim; Berembang bukit; Bandorhulla; Banderkanda; Banderhola; Bandarhulla; Baichua; Achung; Magasawih (Malaysia); Ramdala (India); Linkwai (Thailand); Magasawith (Malaysia); Phay-sung (Malaysia); Magas (Sabah); Tagahas (Sabah); Loktob (Philippines); Lampati (India); Phay (Vietnam); Myaukngo (Myanmar); Kalam (Indonesia); Phay (Thailand); Duabanga (Papua New Guinea)
Scientific Name Synonyms
Leptospartion grandiflorum (Roxb. ex DC.) Griff.; Lagerstroemia grandiflora Roxb. ex DC.; Duabanga sonneralioides Buch.-Ham.
Description Of The Tree
Botanical Description
It is a medium-sized tree up to 30 m tall, but sometimes reaching 40 m, with cylindrical bole up to 80 cm in diameter, scarcely buttressed.
Natural Habitat
This species occurs scattered on open sites in hilly areas up to 1,000 m of altitude.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Tangential diameter of vessel lumina 200 micras or more (large). Tyloses common. Vestured pits. Vessels per mm2 5 to 20. Vessel-ray pits reticulate and/or foraminate. Simple perforation plates. Intervessel pits large, 10 micras or more. Axial parenchyma lozenge-aliform. Over 9 cells per parenchyma strand. 4 to 10 rays per mm (medium). Ray height more than 1 mm. Rays exclusively uniseriate. Body ray cells procumbent with one row of upright and/or square marginal cells (Kribs-III). Fibers with simple to minutely bordered pits.
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Wood Macro Photo Tangential Plane
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Wood Micro Photo Of Transversal Section
Availability
Cites Status
Unrestricted
General Wood Description
Odor
It has no distinct taste or odor.
Color
The sapwood varies from light gray to yellowish. The heartwood is light yellow-brown.
COLOR INDEX (1=Black, 7=Light yellow,white)
4
Grain
It is straight, rarely interlocked.
Texture
It is moderately porous.
Natural Durability
It is perishable. Blue stain rapidly develops in green timber, insect infestation in the logs is also reported.
Natural durability index (1= Very high durability, 7=Vey low durability)
5
Silica Content
Silica Content: It is reported to contain no silica.
Resistance To Impregnation
It is easy to treat with preservatives.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.49
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.53
Total shrinkage Tangential (Saturated to 0%MC) (%)
5.3
Total shrinkage Radial (Saturated to 0%MC) (%)
3.3
Drying Defects
Ease of Drying: Mango is reported to dry well and fairly rapidly with slight seasoning defects. Boards 12 mm thick take 2 to 3 months to air dry. Drying Defects: It is sometimes subject to cupping or bowing, and it may be liable to staining. Kiln Schedules: The wood kiln dries easily by fairly fast schedules.
Recommended Dry Kiln Schedule
UK-K; US-T13-C4S
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
1.6
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
652
Stiffness (MOE) 12%MC (kgf/cm²)
78565
Compression parallel to fiber 12%MC (kgf/cm²)
372
Workability
Sawing
This species is easy to saw.
Rotary Veneer Cutting
Peeling properties are good but care should be taken to prevent fungal attack when veneer is stacked tightly.
Sliced Veneer
Peeling properties are good but care should be taken to prevent fungal attack when veneer is stacked tightly.
Machining
It is easy if cutters are well sharpened.
Planing
Planing of this species is reported to be easy.
Moulding
Molding of this species is reported to be easy.
Boring
It is easy to bore.
Nailing
This species has good nailing properties.
Gluing
It is reported to be easy to glue.
Sanding
It has a good sanding behavior.
Finishing
Good if filled.
REFERENCED USES
End Uses Summary
HOUSING GENERAL, frames, FURNITURE AND CABINETS, common furniture, PLYWOOD AND VENEER, faces, cores, PACKING, NAVAL CONSTRUCTION, OTHER AND MUSICAL INSTRUMENTS, matches, paper
General Housing
- 10 - Silica in Timbers
Frames
- 16 - Woods of the World
Furniture Cabinets
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Furniture, Common
- 23 - Handbook of Hardwoods
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
Packing
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Shipbuilding
- 55 - Tropical Timber Atlas of Latin America
Matches
- 71 - Proprietes physiques et mecaniques des bois tropicaux, premier supplement
Paper
- 82 - Compilation of Data on the Mechanical Properties of Foreign woods (Part 2) Central and South America.
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