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CORDIA (Cordia dichotoma)
Trade Name
Cordia
Scientific Name
Cordia dichotoma G. Forst.
Family
BORAGINACEAE
Common Names
Viri; New Guinea cordia; Guma; Anonang-bakir; Kendal (Indonesia); Toleolo (Indonesia); Mandong (Thailand); Nunang (Indonesia); Nunang (Borneo); Man khok (Laos); Thanat (Myanmar); Sebasten tree (Myanmar); Cordia (Papua New Guinea); Sekendal (Malaysia); Anonang (Philippines)
Scientific Name Synonyms
Varronia sinensis Lour.
Description Of The Tree
Botanical Description
It is a small to medium-sized tree up to 25 m tall. The bole is up to 60 in diameter.
Natural Habitat
Cordia dichotoma is common in coastal hills, inland fringes of mangroves and also in inland primary and secondary forests, up to 700 m of altitude.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Tangential diameter of vessel lumina 200 micras or more (large). Tyloses common. Vessels per mm2 5 to 20. Vessel-ray pits reticulate and/or foraminate. Simple perforation plates. Intervessel pits medium, 7 to 10 micras. Axial parenchyma in marginal or in seemingly marginal bands. Axial parenchyma lozenge-aliform. Axial parenchyma confluent. Prismatic crystals in non-chambered axial parenchyma cells. Two cells per parenchyma strand. Rays less than 4 per mm (rare). Ray height more than 1 mm. Sheath cells. Prismatic crystals in the ray cells. Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kribs-II). Fibers with simple to minutely bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Color
The heartwood is pale brown to dark brown, non distinct from the sapwood.
COLOR INDEX (1=Black, 7=Light yellow,white)
4
Grain
This species is reported to have typically straight or interlocked grain.
Texture
The texture varies from medium to coarse.
Natural Durability
It is reported to have low durability against fungi and insects.
Natural durability index (1= Very high durability, 7=Vey low durability)
5
Resistance To Impregnation
The heartwood is impermeable to preservatives, even when using pressure treatments.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.43
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.46
Total shrinkage Tangential (Saturated to 0%MC) (%)
6.4
Total shrinkage Radial (Saturated to 0%MC) (%)
2.5
Drying Defects
Ease of Drying: Seasoning is rated as difficult. Drying Defects: There is a tendency to split slightly along the broad rays.
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
2.6
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
662
Stiffness (MOE) 12%MC (kgf/cm²)
87175
Compression parallel to fiber 12%MC (kgf/cm²)
428
Shear strength radial 12%MC (kgf/cm²)
66
Janka hardness (side) 12%MC (kgf)
246
Workability
Sawing
This species is easy to saw.
Machining
Wood processing is reported to be easy.
Finishing
It has a good finishing.
Response To Hand Tools
Response to hand tools is reported to be good.
REFERENCED USES
End Uses Summary
HOUSING GENERAL, FURNITURE AND CABINETS, TOOLS, tool handles, NAVAL CONSTRUCTION, OTHER AND MUSICAL INSTRUMENTS
General Housing
- 10 - Silica in Timbers
Furniture Cabinets
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Tools
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Tool Handles
- 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
Shipbuilding
- 55 - Tropical Timber Atlas of Latin America
Other & Musical Instruments
- 63 - Madeiras do Brazil II
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