NEUBURGIA (Neuburgia corynocarpa)
Trade Name
Neuburgia
Scientific Name
Neuburgia corynocarpum (Gray) Leeam.
Family
APOCYNACEAE
Common Names
Aifim (West Irian); Rantiepi (Indonesia); Metan (Indonesia); Aifim (Indonesia)
Scientific Name Synonyms
Couthovia seemannii A. Gray; Couthovia novobritannica Kaneh. & Hatus.; Couthovia corynocarpa A. Gray
Description Of The Tree
Botanical Description
Small to fairly large tree, up to 40 m. The bole is straight, branchless for 20 m, with diameters of 100 cm, sometimes with buttresses.
Natural Habitat
Neuburgia occurs in primary or sometimes in old secondary forests, usually as an understorey tree in well drained or swampy areas. It is intolerant to salt water conditions, and it is found up to 2,000 m of altitude.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Vestured pits. Vessels per mm2 5 to 20. Vessels per mm2 less than 6 (rare). Simple perforation plates. Vessel-ray pits similar to intervessel pits in size and shape. Intervessel pits small, 7 micras or less. Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Occasionally apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Paratracheal axial parenchyma scanty and/or vasicentric. 5 to 8 cells per parenchyma strand. Over 9 cells per pa 4 to 10 rays per mm (medium). Occasionally rays more than 10 per mm (abundant). Rays exclusively uniseriate. All ray cells upright and/or square. Fibers very thin walled. Fibers with simple to minutely bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Color
The heartwood is grayish-white or greenish gray-yellow, not clearly demarcated from the paler sapwood.
Grain
The grain is straight, sometimes interlocked.
Texture
The texture varies from moderately fine to coarse.
Natural Durability
The wood is attacked by fungi and insects when exposed to the weather or in contact with the ground.
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)
0.50
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.54
Total shrinkage Tangential (Saturated to 0%MC) (%)
11.7
Total shrinkage Radial (Saturated to 0%MC) (%)
5.1
Drying Defects
Ease of Drying: Air seasoning is reported to be easy. Drying Defects: It has a marked tendency to distort.
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
2.3
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
815
Stiffness (MOE) 12%MC (kgf/cm²)
132164
Compression parallel to fiber 12%MC (kgf/cm²)
479
Shear strength radial 12%MC (kgf/cm²)
112
Janka hardness (side) 12%MC (kgf)
329
Workability
Turning
30
REFERENCED USES
End Uses Summary
HOUSING GENERAL, frames, TURNING, cutlery, PACKING, OTHER AND MUSICAL INSTRUMENTS, moldings
General Housing
- 10 - Silica in Timbers
Frames
- 16 - Woods of the World
Turning
- 30 - Embassy of Honduras in Japan
Knife Handles
- 33 - Embassy of Gabon in Japan
Packing
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Molding
- 79 - Padronização da Nomenclatura Comercial Brasileira das Madeiras Tropicais Amazônicas, Sugestão
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