Greenheart

Botanical name: Chlorocardium rodiei
   
Family: Lauraceae
   
Vernacular name (Guyana): Greenheart
   
International trade name:    Greenheart
   
Wood Appearance  
Light greenish to dark olive-green, sometimes marked with brown or black stakes. Sapwood is pale yellow in colour, shading gradually into heartwood. The texture is fine and even and grain straight or interlocked. The bole is 15-23m in length with a diameter of 35-60 cm.
 
Physical and Mechanical Properties
Has exceptionally high strength properties even when its weight is taken into account:
  • Air dried density (12%) - 970 kg/m3
  • Bending strength (at 12%) - 240 N/mm2
  • Modulus of elasticity (at 12%) - 24500 N/mm2
  • Compression parallel to grain - 89.9 N/ mm2
  • Crushing strength (at 12%) - 98 N/mm2
 
Natural durability
Almost immune to decay and termites, highly resistant to marine organisms and fire.
Extremely resistant to preservative treatment.
 
Treatability :  Poor
 
Timber Processing
Drying : Dries very slowly with minor degrade, particularly in the thicker sizes. Distortion is not serious, but checking and splitting may occur. Kiln schedule B.
Working - Power required with blunting effect being moderate to high. Turns well. Planing is not difficult despite the high density of the wood and interlocked grain.
Assembly - Easy gluing. Pre-boring is recommended for nails and screws. Good nail holding.
Finishing - Staining rarely necessary. Polishes satisfactorily.
 
Uses
A very heavy, hard timber, suitable for use under exacting conditions. Outstanding in most of its strength properties and of very high durability with excellent resistant to attack by marine borers. Available in very large sizes and long length, and is suitable for piling, piers, lock gates, dock and harbor works. Useful for pier decking and hand rails, flooring and in the engineering industry as
bearers for engines. Gives good service in chemical plants for vats, filter press plates and frames. Suitable for joinery in both exterior and interior situations, and used also for fishing rods and as centre laminar for longbows and general construction.
 
Availability & Location
Found in commercial quantities throughout Guyana's forest.  Especially in the Essequibo-Demerara region.

 

 

 
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