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Ditta 5
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Am-bibia
Am-bibia (Scytopetalium tieghemii)

Family: Scytopetalaceae

Common names: Am-bibia, Amene, Anene, Aprim, Degbeme-weli, Degbeme-yawii, Dueke, Eprim, Moussanghoue, Papa-kone, Penim, Sourwood, Sumie, Sumili, Zeb-blo

Distributed in: Congo, Ghana, Ivory Coast, Liberia, Sierra Leone (Africa)

Common uses: Agricultural implements, Boat building (general), Handles: general, Heavy construction, Joinery, Ladders, Light construction, Mine timbers, Plywood, Posts, Railroad ties, Sporting Goods

Tree size: Trunk diameter is 100-150 cm

Colors: the heart isYellow, Yellow to golden-yellow to orangeand the sapwoodWhite to yellow, Yellow.The grain isStraight, the textureUniformand the lusterLow

Natural durability: Susceptible to attack from powder post (Lyctid & Bostrychid) beetles, Susceptible to attack from termites (Isoptera)

Odor: Has an odor

Silica Content: High

Kiln Schedules: Dry at a slow speed

Drying Defects: Moderate end spitting, Moderate surface checking

Ease of Drying: Reconditioning Treatement

Tree Identification: Bole/stem form is straight

Blunting Effect: High to severe

Boring: Fairly difficult to very difficult

Carving: Poor to Very Poor Results

Cutting Resistance: Fairly Difficult to Very Difficult to saw

Gluing: Fairly Easy to Very Easy

Mortising: Fairly Difficult to Very Difficult

Moulding: Fairly Difficult to Very Difficult

Movement in Service: Fairly Difficult to Very Difficult

Nailing: Possible if prebored, Pre-Boring Recommended

Planing: Fairly Difficult to Very Difficult

Resistance to Impregnation: Resistant sapwood

Response to hand tools: Fairly Difficult to Difficult to Work

Sanding: Fairly Easy to Very Easy

Steam bending: Poor to Very Poor Results

Screwing: Fair to Good Results, Fairly Easy to Very Easy; Turning: Fairly Difficult to Very Difficult

Polishing: Very Good to Excellent; Staining: Very Good to Excellent; Varnishing: Surface Preparation ;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 721 kg/m3
Bending Strength 954 1473 kg/cm2
Crushing Strength 380 574 kg/cm2
Hardness 601 kg
Impact Strength cm
Shearing Strength kg/cm2
Stiffness 117 135 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage 6 %
Weight 705 560 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 13576 20956 psi
Density 45 lbs/ft3
Hardness 1326 lbs
Maximum Crushing Strength 5408 8171 psi
Stiffness 1665 1923 1000 psi
Weight 44 35 lbs/ft3
Radial Shrinkage 6 %
Tangential Shrinkage 9 %

Density (dry weight) = 46-52 lbs/cu. ft.
Bending strength (MOR) = high
Shrinkage, Tangential = large
Shrinkage, Radial = large
Max. crushing strength = medium
Max. crushing strength = high
Density (dry weight) = 38-45 lbs/cu. ft.
Shrinkage, Tangential = fairly large
Shrinkage, Radial = fairly large
Modulus of Elasticity (stiffness) = medium
Hardness (side grain) = soft
Hardness (side grain) = medium

Bolza, E., Keating, W.G.,1972,African Timbers - the Properties, Uses and Characteristics of 700 Species,C.S.I.R.O. Div. of Building ResearchCooper, G.P., Record, S.J.,1931,The Evergreen Forests of Liberia,Yale School Forestry Bulletin,31,pp1-153Irvine, F.R.,1961,Woody Plants of Ghana,O.U.P. LondonKryn, J.M., Forbes, E.W.,1959,The Woods of Liberia,U.S.A. Department of Agriculture,Forest Products Laboratory, Madison,,Report No. 2159Sallenave, P.,1955,Proprietes Phyiques et Mecaniques des Bois Tropicaux de l'Union Francaise,C.T.F.TSavill, P.S., Fox, J.E.D.,1967,Trees of Sierra LeoneTakahashi, A.,1978,Compilation of Data on the Mechanical Properties of Foreign Woods (Part,III) Africa,Shimane University, Japan, Research Report on Foreign Wood No. 7Taylor, C.J.,1960,Synecology and Silviculture in Ghana,University College of Ghana Thomas Nelson and Sons
*Come interpretare i dati (manleva su eventuali imprecisioni)