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SILVER ASH (Flindersia amboinensis)
Trade Name
Silver ash
Scientific Name
Flindersia amboinensis Poir.
Family
RUTACEAE
Common Names
Silver ash; Sugwa (Indonesia); Kay parudan (Indonesia); Iskumun (Indonesia); Iskumun (West Irian); Sugwa (West Irian)
Scientific Name Synonyms
Flindersia radulifera Spreng; Flindersia macrocarpa Lane-Poole ex C.T. White & W
Description Of The Tree
Botanical Description
Trees up to 45 m tall, with a straight and cylindrical bole up to 100 cm. It is branchless up to 21 m, buttresses up to 2 m are reported.
Natural Habitat
A large tree, widespread but of sporadic occurrence throughout lowland and submontane rain forest on mainland Papua New Guinea, Seram Island and Tanimbar Islands of the Moluccas.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Occasionally tangential diameter of vessel lumina 100 micras or less. Occasionally vessels with colored deposits. Vessels per mm2 5 to 20. Occasionally vessels per mm2 less than 6. Simple perforation plates. Vessel-ray pits similar to inter Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Paratracheal axial parenchyma scanty and/or vasicentric. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. Occasionally two cells per parenchyma strand. Occasionally axi 4 to 10 rays per mm (medium). Occasionally larger rays more than 4 seriate. Prismatic crystals in radial alignment in procumbent ray cells (chambered cells). Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Fibers very thin walled. Fibers with simple to minutely bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Color
The heartwood varies from white to pale yellow-brown, pale pink-brown or red-brown, not distinct from the white, pale pink or pale brown sapwood.
COLOR INDEX (1=Black, 7=Light yellow,white)
6
Grain
The grain is fairly straight, occasionally wavy or interlocked.
Texture
Texture is usually fine to medium.
Natural Durability
The wood is very durable when not in contact with the ground, but it can be attacked by ambrosia beetles.
Natural durability index (1= Very high durability, 7=Vey low durability)
2
Resistance To Impregnation
The sapwood is reported to be easy to preserve but the heartwood is untreatable.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.48
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.53
Total shrinkage Tangential (Saturated to 0%MC) (%)
4.4
Total shrinkage Radial (Saturated to 0%MC) (%)
2.0
Drying Defects
Ease of Drying: Seasoning is reported to be easy.
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
2.2
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
881
Stiffness (MOE) 12%MC (kgf/cm²)
122331
Compression parallel to fiber 12%MC (kgf/cm²)
510
Shear strength radial 12%MC (kgf/cm²)
148
Workability
Rotary Veneer Cutting
This species can be used for lamination.
Sliced Veneer
This species can be used for lamination.
Machining
It is easy to machine.
Planing
Interlocked grain may pick up in planing.
Turning
30
Gluing
It is reported to be easy to glue.
Response To Hand Tools
This species is reported to be easy to work with hand tools.
REFERENCED USES
End Uses Summary
HOUSING GENERAL, flooring, frames, panelling, FURNITURE AND CABINETS, cabinets, PLYWOOD AND VENEER, TURNING, BENDING, SPORTS, TOOLS, tool handles, CONTAINERS, cooperage, NAVAL CONSTRUCTION, boats, boat oars, OTHER AND MUSICAL INSTRUMENTS, moldings
General Housing
- 10 - Silica in Timbers
Flooring
- 14 - Handbook of Hardwoods
Frames
- 16 - Woods of the World
Paneling
- 18 - W3TROPICOS Missouri Botanical Garden
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
Turning
- 30 - Embassy of Honduras in Japan
Bending
- 35 - Embassy of Myanmar in Japan
Sports
- 38 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
Tools
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Tool Handles
- 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
Containers
- 50 - Properties of imported tropical woods
Cooperage
- 51 - Recopilacion de propiedades mecanicas de maderas creciendo en Chile
Shipbuilding
- 55 - Tropical Timber Atlas of Latin America
Boats
- 56 - Manual de Identificación de Especies Forestales de la Subregión Andina.
Boat Oars
- 60 - Amazonian Timbers, Characteristics and Utilization Volume II; Curuá-Una Experimental Forest Station
Molding
- 79 - Padronização da Nomenclatura Comercial Brasileira das Madeiras Tropicais Amazônicas, Sugestão
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