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Kabok
Irvingia malayana Oliver ex Bennett
SIMAROUBACEAE
Barking deer`s mango; Kayu batu (Indonesia); Bongin (Indonesia); Kabok; Kayu batu (Borneo); Kra bok (Thailand); Pauh kijang (Sumatra); Patok entilit (Sarawak); Taung-thayet (Myanmar); Bongin; Selangan tandok (Sabah); Pauh kijang (Malaysia); Pauh kijang (Indonesia)
Irvingia oliveri Pierre; Irvingia longipedicellata Gagnep.; Irvingia harmandiana Pierre
It is a large to very large tree up to 60 m tall. The bole is straight, up to 150 cm in diameter, with prominent, thin and steep buttresses up to 8 m high.
Irvingia malayana grows scattered in primary lowland rain forests in drier locations, up to 300 m of altitude.
It can be found from Indo-China southwards to Sumatra and Borneo.
Wood diffuse porous. Occasionally tangential diameter of vessel lumina 100 micras or less. Vestured pits. Vessels per mm2 5 to 20. Simple perforation plates. Vessel-ray pits similar to intervessel pits in size and shape. Occasionally intervessel pits small, 7 m 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. 3 to 4 cells per parenchyma strand. 5 to 8 cells per parenchym Occasionally rays more than 10 per mm (abundant). Ray height more than 1 mm. Body ray cells procumbent with over 4 rows of upright and/or square marginal cells (Kribs-I). Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cel Fibers very thin walled. Fibers with distinctly bordered pits.
Unrestricted
The heartwood is yellow-brown with a greenish tinge, somewhat differentiated from the pale yellow-brown or pale brown sapwood.
5
It is shallowly interlocked.
Texture of this species is reported as moderately fine and even.
The is reported as moderately durable.
3
It absorbs preservatives easily.
0.91
1.07
9.3
5.7
Ease of Drying: Needlewood has good drying characteristics, and is reported that 13 mm and 38 mm thick boards took about 2.5 months and 3 months, respectively to air dry in Malaysia. Figures from Indonesia indicate slower air drying, e.g. 7 months for 30 mm thick boards. Drying Defects: Risk of warping and checking. Reports from Indonesia say that slight to severe risk of cupping, bowing, twisting or splitting may occur.
UK-C
1.6
718
129
173
1341
1261
Cutting resistance is generally high.
If thoroughly steamed can produce decorative sliced veneers with colored stripes.
If thoroughly steamed can produce decorative sliced veneers with colored stripes.
Special cutters are needed because of the presence of interlocked grain.
It needs pre-boring for nailing and screwing.
It has a bad finishing, rough surfaces require sanding.
EXTERIOR GENERAL, crossties, HOUSING GENERAL, flooring, panelling, FURNITURE AND CABINETS, cabinets, SPORTS, TOOLS, tool handles
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