12/4 AD $ 9.25 BF
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Assumed, Wood Working Properties & Specifications
Other Common Names: Jelutong bukit (Sarawak).
Distribution: Malaysia and Brunei.
The Tree: May reach a height of 200 ft, with straight and cylindrical boles free from buttresses to lengths of 90 ft; trunk diameters up to 8 ft.
General Characteristics: Heartwood creamy white to pale straw not differentiated from sapwood. Grain mostly straight; texture moderately fine and even; slightly lustrous without taste but has a slight sour odor that is distinctive. Marked with latex traces or canals often in clusters 2 to 3 ft apart along the stem.
Weight: Basic specific gravity (ovendry weight/green volume) 0.36; air-dry density 28 pcf.
Mechanical Properties: (2-in. standard)
Moisture content Bending strength Modulus of elasticity Maximum crushing strength
(%) (Psi) (1,000 psi) (Psi)
Green (37) 5,570 1,155 3,050
16% 7,315 1,180 3,920
Janka side hardness 330 lb for green material and 390 lb for dry.
Drying and Shrinkage: Dries easily with little or no degrade. Kiln schedule T10-4DS is suggested for 4/4 stock and T8-D3S for 8/4. Shrinkage green to ovendry: radial 2.3%; tangential 5.5%; volumetric 6.2%. Movement in service is rated small.
Working Properties: Works easily with hand and machine tools but may gum the cutter excellent for carving; glues satisfactorily.
Durability: Nondurable, prone to sap stain, and is readily attacked by termites and powder-post beetles.
Preservation: Reported to absorb preservatives readily and is easily treated using the open tank system.
Uses: Patternmaking, drawing boards, carvings, wooden shoes, picture frames, pencil slats. The tree yields a latex used in the manufacture of chewing gum.
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