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Assila
Assila (Parinari holstii)

Family: Chrysobalanaceae

Common names: Assila, Eshagho, Mampataz, Mubara, Mubura, Ofam, Sougue

Distributed in: Cameroon, Ivory Coast (Africa)

Distribution overview: Grows in West Africa.

Environment profile: Data source is World Conservation Monitoring Center This species is officially classified as Vulnerable within its natural growth range in Cameroon

Tree size: Trunk diameter is 100-150 cm

Colors: the heart isPurple, Red - pale and the sapwoodWhite, Yellow.The grain isFigure, the textureMedium coarse to coarseand the lusterMedium

Natural durability: Very durable, Very little natural resistance

Odor: The odor disappears after the timber is seasoned The sapwood has a scent of honey when freshly cut

Silica Content: The wood usually contains very high amounts of silica levels of more than 1% (of ovendry weight) have been reported. A silica content of 0.05% is usually considered to be high enough to affect the machining properties of wood

Kiln Schedules: UK=B

Kiln Drying Rate: Naturally dries slowly

Drying Defects: Resin Exudation, Splitting

Ease of Drying: Variable

Blunting Effect: Moderate

Boring: Fairly easy to very easy

Carving: Fairly Difficult to Very Difficult

Cutting Resistance: Moderate to saw

Gluing: Satisfactory gluing properties

Mortising: Fairly Difficult to Very Difficult

Moulding: Fairly Difficult to Very Difficult

Movement in Service: Fairly Difficult to Very Difficult

Nailing: Pre-Boring Recommended, Pre-Boring is necessary

Planing: Irregular grained material may tear during planing operations

Resistance to Impregnation: Sapwood is permeable

Response to hand tools: Fairly Difficult to Difficult to Work

Routing recessing: Fairly Difficult to Very Difficult

Sanding: Very Good to Excellent Results

Steam bending: Moderate

Screwing: Pre-Boring is required before screwing , Pre-boring recommended; Turning: Very Good to Excellent Results

Polishing: Very Good to Excellent; Staining: Very Good to Excellent;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity 0,64
Density 817 kg/m3
Bending Strength 861 1343 kg/cm2
Crushing Strength 434 709 kg/cm2
Hardness kg
Impact Strength cm
Shearing Strength 167 kg/cm2
Stiffness 141 162 1000 kg/cm2
Tangential Shrinkage 10 %
Radial Shrinkage 6 %
Weight 721 592 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 12250 19110 psi
Density 51 lbs/ft3
Maximum Crushing Strength 6174 10094 psi
Shearing Strength 2381 psi
Stiffness 2019 2313 1000 psi
Specific Gravity 0.64
Weight 45 37. lbs/ft3
Radial Shrinkage 6 %
Tangential Shrinkage 10 %
Volumetric Shrinkage 16 %

Weight = very heavy
Density = very high
The bending strength qualities of this species in the air-dry condition is very high, far superior to those of Mahogany. Strength qualities in compression parallel to grain are exceptionally high

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
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