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AMBEROI (Pterocymbium tinctorium)
Trade Name
Amberoi
Scientific Name
Pterocymbium tinctorium (Blanco)
Family
STERCULIACEAE
Common Names
Po-khiliat (Thailand); Po-khihaet (Thailand); Oy sang (Laos); Taluto (Philippines); Teluto (Malaysia); Melembu (Malaysia); Tolutu (Indonesia); Gelumbah (Indonesia); Sawbya (Myanmar)
Scientific Name Synonyms
Pterocymbium viridiflorum Koord; Pterocymbium javanicum R.Br.; Pterocymbium columnare Pierre
Description Of The Tree
Botanical Description
It is a small sized to fairly large tree, reaching heights up to 40 to 50 meters. The bole has a diameter of up to 90 cm, branchless for 30 meters.
Natural Habitat
Pterocymbium tinctorium is more common on alluvial flats, also found in evergreen or deciduous or even open forests in periodically dry locations, up to 1,000 m of altitude. Not enough information available to apply the criterrion.(CITES,?,1997)
Wood Identification
Anatomic Description Of Wood
Vessels per mm2 less than 6 (rare). Wood diffuse porous. Vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 200 micras or more (large). Vessel-ray pits similar to intervessel pits in size and shape. Simple perforation plates. Interves Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma confluent unilateral paratracheal. Axial parenchyma storied. Rays storied. Rays of two distinct sizes. Rays less than 4 per mm (rare). Larger rays more than 4 seriate. Body ray cells procumbent with one row of upright and/or square marginal cells (Kribs-III). Sheath cells. Fibers storied. Fibers very thin walled.
Availability
Cites Status
Unrestricted
General Wood Description
Odor
The fresh wood has a strong unpleasant odor.
Color
The heartwood is not clearly demarcated from the sapwood. The wood is white yellow to pale brown.
COLOR INDEX (1=Black, 7=Light yellow,white)
7
Grain
It has straight grain.
Texture
This wood has a somewhat coarse texture.
Natural Durability
The wood is non durable.
Natural durability index (1= Very high durability, 7=Vey low durability)
5
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.55
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.60
Recommended Dry Kiln Schedule
JP-21; US-52-53
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
511
Stiffness (MOE) 12%MC (kgf/cm²)
42000
Compression parallel to fiber 12%MC (kgf/cm²)
213
Workability
Sawing
The wood has good sawing characteristics, provided it is well seasoned. It requires sharp tools to make a smooth cut, especially across the grain.
Rotary Veneer Cutting
The wood is used for the production of veneer.
Sliced Veneer
The wood is used for the production of veneer.
Machining
Machining of this species is reported to be easy.
Nailing
The nail holding properties are moderate.
Gluing
This wood glues fairly well.
Finishing
A good finishing can be obtained with both machine and hand tools.
Steam Bending
The steam bending properties are satisfactory.
REFERENCED USES
End Uses Summary
HOUSING GENERAL, PLYWOOD AND VENEER, faces, cores, PACKING, light packing, NAVAL CONSTRUCTION, OTHER AND MUSICAL INSTRUMENTS, handicrafts, shoes, matches, moldings, paper
General Housing
- 10 - Silica in 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
Packing
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Light Packing
- 46 - ECUADOR, Inventario y Aprovechamiento de los Bosques del Sur Ecuatoriano
Shipbuilding
- 55 - Tropical Timber Atlas of Latin America
Handcraft
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Shoes
- 70 - Proprietes physiques et mecaniques des bois tropicaux de l`union francaise
Matches
- 71 - Proprietes physiques et mecaniques des bois tropicaux, premier supplement
Molding
- 79 - Padronização da Nomenclatura Comercial Brasileira das Madeiras Tropicais Amazônicas, Sugestão
Paper
- 82 - Compilation of Data on the Mechanical Properties of Foreign woods (Part 2) Central and South America.
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