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Demi-deuilDemi-deuilDemi-deuil
Demi-deuil (Diospyros mannii)

Family: Ebenaceae

Common names: Demi-deuil, Ebene, Ebony

Distributed in: Nigeria, Sierra Leone, Zaire (Africa)

Common uses: Boat building (general), Boxes and crates, Carvings, Flooring, Furniture, Plywood, Tool handles, Turnery, Vehicle parts, Veneer: decorative

Environment profile: Abundant/Secure

Tree size: Tree height is 30-40 m

Colors: the heart isBlack, Brownand the sapwoodWhite, Yellow.The grain isWavy, the textureUniform

Natural durability: Resistant to attack from termites (Isoptera), Sapwood is susceptible to wood staining fungal attack

Odor: Has an odor

Drying Defects: Discoloration, Moderate end spitting

Ease of Drying: Moderately Difficult to Difficult

Blunting Effect: Blunting effect on machining is moderate

Boring: Fairly easy to very easy

Cutting Resistance: Cutting Resistance with dry wood is easy

Gluing: Fairly Easy to Very Easy

Mortising: Fairly Easy to Very Easy

Moulding: Fairly Easy to Very Easy

Movement in Service: Fairly Easy to Very Easy

Nailing: Fair to Good , Pre-Boring Recommended

Planing: Fairly Difficult to Very Difficult

Resistance to Impregnation: Heartwood is extremely resistant

Response to hand tools: Easy to Work

Routing recessing: Fairly Easy to Very Easy

Steam bending: Poor to Very Poor Results

Screwing: Pre-boring recommended ; Turning: Fairly Easy to Very Easy

Polishing: Very Good to Excellent;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 929 kg/m3
Bending Strength kg/cm2
Crushing Strength kg/cm2
Hardness kg
Impact Strength cm
Shearing Strength kg/cm2
Stiffness 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage 5 %
Weight 913 737 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Density 58 lbs/ft3
Weight 57 46 lbs/ft3
Radial Shrinkage 5 %
Tangential Shrinkage 9 %

Shrinkage, Tangential = large
Shrinkage, Tangential = fairly large
Shrinkage, Radial = large
Shrinkage, Radial = fairly large
Shrinkage, Tangential = moderate
Shrinkage, Radial = moderate
Density (dry weight) = 61-67 lbs/cu. ft
Density (dry weight) = 53-60 lbs/cu. ft

Bolza, E., Keating, W.G.,1972,African Timbers - the Properties, Uses and Characteristics of 700 Species,C.S.I.R.O. Div. of Building Research
*Come interpretare i dati (manleva su eventuali imprecisioni)