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Asumpa
Asumpa (Anonidium mannii)

Family:

Common names: Asumpa, Bombi, Tahu

Distributed in: Cameroon, Central African Republic (Africa)

Distribution overview: Often found in West and Central Africa, specifically in Cameroon. Also occurs in southern Nigeria and from Ghana to Zaire, primarily in lowland rain forests.

Common uses: Boxes and crates, Carvings, Casks, Core Stock, Decorative plywood, Decorative veneer, Figured veneer, Gunstocks, Hardboards, Packing cases, Particleboard, Plain veneer, Plywood, Pulp/Paper products, Pulpwood, Rifle stock, Sporting Goods, Structural plywood, Utility plywood, Veneer, Woodwork

Product sources: The tree yields Gatty gum, which is a good substitute for gum arabic.

Environment profile: Status has not been officially assessed

Tree size: Tree height is 10-20 m

Colors: the heart isYellow, Yellowish tanand the sapwoodWhite, Yellow.The grain isInterlocked, the textureCoarse

Natural durability: Susceptible to attack by blue stain fungi and termites

Odor: No specific smell or taste

Boring: Fairly difficult to very difficult

Carving: Fairly Difficult to Very Difficult

Cutting Resistance: Saws rapidly without difficulty

Mortising: Fairly Difficult to Very Difficult

Moulding: Fairly Difficult to Very Difficult

Movement in Service: Fairly Difficult to Very Difficult

Nailing: Poor to Very Poor , Very Good to Excellent

Planing: Fairly Difficult to Very Difficult

Routing recessing: Fairly Difficult to Very Difficult

Turning: Fairly Difficult to Very Difficult


  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density kg/m3
Bending Strength 365 568 kg/cm2
Crushing Strength 182 344 kg/cm2
Hardness kg
Impact Strength cm
Shearing Strength 90 kg/cm2
Stiffness 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage %
Weight kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 5194 8085 psi
Maximum Crushing Strength 2597 4900 psi
Shearing Strength 1294 psi
Stiffness 980 1127 1000 psi

Compression strength (parallel to grain) = low
Bending strength (MOR) = low
The bending strength of the species in the air-dry condition (about 12 percent moisture content) is considered low - much lower than Teak, for example. It is weaker than Mahogany or Teak

Bolza, E., Keating, W.G.,1972,African Timbers - the Properties, Uses and Characteristics of 700 Species,C.S.I.R.O. Div. of Building ResearchKeay, R.W.J.1989. Trees of Nigeria.Revised Version of Nigerian Trees . Clarendon Press, Oxford.
*Come interpretare i dati (manleva su eventuali imprecisioni)