KAYU KUNDUR (Mastixia pentandra)
Trade Name
Kayu kundur
Scientific Name
Mastixia pentandra Blume
Family
CORNACEAE
Common Names
Balikbikan (Philippines); Kayu wulu (Brunei Darussalam); Medang surungan (Brunei Darussalam); Huru lilin (Indonesia); Mengkapas (Indonesia); Kayu wulu (Malaysia); Medang surungan (Sabah); Medang surungan (Sarawak); Medang pisang (Malaysia); Bakan (Philippines); Tenyau (Indonesia); Apanit (Philippines)
Scientific Name Synonyms
Mastixia scortechinii King; Mastixia poilanei Tardieu; Mastixia philippinensis Wangerin
Description Of The Tree
Botanical Description
It is a very large tree, up to 40 m tall, 80 cm diameter. The buttresses are short.
Natural Habitat
This species is generally found scattered in primary and secondary forests in valleys, on slopes or ridges, up to 2,400 m of altitude.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Occasionally tangential diameter of vessel lumina 100 micras or less. Vestured pits. Occasionally vessels per mm2 more than 20. Simple perforation plates. Vessel-ray pits similar to intervessel pits in size and shape. Occasionally intervess Occasionally axial parenchyma absent or extremely rare, non visible with magnifying glass (8x). Occasionally apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Paratracheal axial parenchyma scanty and/or vasicentric. Occasionally two cells pe 4 to 10 rays per mm (medium). Occasionally larger rays more than 4 seriate. Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kribs-II). Occasionally body ray cells procumbent with one row of upright and/or square mar Septate fibers present. Fibers with simple to minutely bordered pits.
-
Wood Macro Photo Radial Plane
-
Wood Micro Photo Of Transversal Section
Availability
Cites Status
Unrestricted
General Wood Description
Color
The heartwood varies from straw-colored to yellow with a greenish tinge, not clearly differentiated from the white to pale yellow sapwood.
COLOR INDEX (1=Black, 7=Light yellow,white)
5
Grain
The grain is straight or slightly interlocked.
Texture
The texture of the wood is fine.
Natural Durability
M. pentandra has low resistance against decay and wood insects attack.
Natural durability index (1= Very high durability, 7=Vey low durability)
5
Resistance To Impregnation
It is easy to preserve.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.53
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.58
Drying Defects
Ease of Drying: The boards of S. ceramica dry rapidly without much degrade. Drying Defects: The wood is sometimes prone to collapse, checking, cupping and warping.
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
1009
Stiffness (MOE) 12%MC (kgf/cm²)
120242
Compression parallel to fiber 12%MC (kgf/cm²)
499
Compression perpendicular to fiber 12%MC (kgf/cm²)
61
Shear strength radial 12%MC (kgf/cm²)
102
Janka hardness (side) 12%MC (kgf)
606
Janka hardness (end grain) 12%MC (kgf)
412
Workability
Sawing
Sawing of this species is reported to be rather easy.
Machining
It is easy to machine, giving a smooth surface.
REFERENCED USES
End Uses Summary
HOUSING GENERAL, shutter boards, PACKING, pallets
General Housing
- 10 - Silica in Timbers
Shutter Boards
- 20 - Prospect: The wood database
Packing
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Pallets
- 48 - The strength properties of timbers
Please Provide Information To View Producer Information