Timbers of Kerala

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Scientific Name  Hopea utilis (Bedd.) Bole
Trade Name  Kongu
Local Name  Karan-kongu
Family  Dipterocarpaceae
Tree Size  Large
Tree Height ( m )  25 -
Tree Diameter ( cm )  60 -
Tree Distribution  Restricted localities in West coast semi-evergreen forest
Sapwood-Heartwood Distinction  Distinct
Sapwood Colour  Light olive brown
Heartwood Colour  Yellowish-brown
Hardness  Very hard
Specific Gravity Based on Weight Over-dry and Volume Green 
Weight  Very heavy
Weight(Kg)/cubic meter at 12% Moisture Content  995 -
Texture  Fine to very fine
Grain  Shallowly interlocked
Growth Rings  Fairly distinct
Porosity  Diffuse porous
Vessel Size  Very small
Vessel Arrangement  Arranged in short radial or oblique chains, rarely solitary, often in zig-zag fashion
Vessel Diameter   -
Vessel Element Lenght  -
Pit Outline 
Pit Size 
Vessel Ray Pitting 
Ray Nature  Fine, closely spaced
Ray Arrangement/Type 
Ray Number  -
Ray Height  -
Fibre Walls 
Fiber Length 
Modulus of Rupture in kg/cm2 (Green)  1254.7
Modulus of Elasticity in kg/cm2 (Green)  169200
Modulus of Rupture kg/cm2 (Dry)  1510.7
Modulus of Elasticity in kg/cm2 (Dry)  187200
Uses  Building construction; railway sleepers; poles, cross arms, ballies and fence posts; planks; cart wheels

College of Forestry - KAU