Timbers of Kerala

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Scientific Name  Koompassia malaccensis Maing
Trade Name  Kempas
Local Name  Hampas, Pah, Mengris, Impas, Toemaling, Garis, Ajam
Family  Leguminosae
Tree Size  Very large
Tree Height ( m )  55
Tree Diameter ( cm )  45
Tree Distribution  Malaya,Sumatra and Borneo.
Sapwood-Heartwood Distinction  Distinct
Sapwood Colour  White or pale yellow
Heartwood Colour  Brick red becoming reddish brown on exposure; with numerous yellow brown streaks.
Hardness  Hard
Specific Gravity Based on Weight Over-dry and Volume Green  0.72
Weight  Moderately heavy
Weight(Kg)/cubic meter at 12% Moisture Content 
Texture  Coarse textured
Grain  Straight to interlocked grain
Growth Rings  Indistinct
Porosity  Diffuse porous
Vessel Size  Vessels mostly solitary, large to moderately large, visible to naked eye
Vessel Arrangement  solitary, rarely in radial multiples of two to three; outline of solitary vessels circular
Vessel Diameter   210 - 440 310
Vessel Element Lenght  450 - 745 745
Perforation  Simple
Pit Outline  Polygonal
Pit Size  Large(11-18 Ám),vestured.
Vessel Ray Pitting  Alternate and pit outline polygonal
Ray Nature  Moderately broad, visible to the naked eye, moderately numerous and widely spaced
Ray Arrangement/Type  One to three seriate; homogeneous. Rays show a definite storied structure
Ray Number  3 - 5
Ray Height  400 - 600 480
Fibre Walls  Fibres thick walled, non-septate with minutely bordered pits on the radial walls.
Fiber Length 
Modulus of Rupture in kg/cm2 (Green) 
Modulus of Elasticity in kg/cm2 (Green) 
Modulus of Rupture kg/cm2 (Dry) 
Modulus of Elasticity in kg/cm2 (Dry) 
Uses  Railway sleepers, constructional purposes and furniture making.
  • Tree Image
  • Timber Gross View
  • TS (100X)
  • TLS(100X)
  • RLS(100X)

College of Forestry - KAU