Afina (Strombosia scheffleri)
Family: Olacaceae
Common names: Afina, Aramemila, Aranmamila, Chiusa, Ifondo, Itako pupa, Kambu kazi, Kambu-kazi, Lieme, Luyusa, Mbangbazoa evele, Mbasa, Msangana, Mtora, Muirosi, Munyakasikuro, Munyankono, Murithi, Musiringu, Mutianzuni, Mutimuiro, Mutimuiru, Mutsahware, Nghila, Omuhika, Poe, Ruiunza, Strombosia, Tshipulupulu, Ubelu, Wofondo
Distributed in: Benin, Cameroon, Congo, Equatorial Guinea, Gabon, Kenya, Malawi, Nigeria, Tanzania, Uganda, Zaire (Africa)
Common uses: Bearings & bushings, Bridge construction, Cabinetmaking, Carvings, Flooring, Furniture, Handles: general, Heavy construction, Joinery, Ladders, Light construction, Mine timbers, Model airplanes, Musical instruments, Piling, Plywood, Posts, Railroad ties, Sporting Goods, Tables, Toys, Turnery, Vehicle parts, Veneer
Tree size: Tree height is 10-20 m
Colors: the heart isWhite to cream, Yellow to golden-yellow to orangeand the sapwoodWhite, Yellow.The grain isWeak figure, the textureMedium
Natural durability: Very durable, Very durable
LightInduced Color Change: Darker
Kiln Schedules: UK=E US=T6D2/T3D1 Fr=5
Kiln Drying Rate: Naturally dries slowly
Drying Defects: Slight twist/warp, Splitting
Ease of Drying: Slowly
Tree Identification: Bole/stem form is straight
Comments: General finishing qualities are rated as good
Blunting Effect: High to severe
Boring: Easy
Cutting Resistance: Fairly Difficult to Very Difficult to saw
Gluing: Fairly Easy to Very Easy
Mortising: Easy to mortise
Moulding: Good finishing
Movement in Service: Good finishing
Nailing: Possible if prebored, Pre-Boring Recommended
Planing: Very Good to Excellent
Resistance to Impregnation: Sapwood is permeable
Response to hand tools: Fairly Difficult to Difficult to Work
Screwing: Possible if prebored
; Turning: Very Good to Excellent Results
Polishing: Very Good to Excellent; Staining: Poor to Very Poor; Varnishing: Satisfactory;
- Numerical data Metric
- Numerical data English
- Strength properties
- References
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Item |
Green |
Dry |
Metric |
Specific Gravity |
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Density |
|
833 |
kg/m3 |
Bending Strength |
1341 |
1950 |
kg/cm2 |
Crushing Strength |
437 |
644 |
kg/cm2 |
Hardness |
|
979 |
kg |
Impact Strength |
|
114 |
cm |
Shearing Strength |
|
191 |
kg/cm2 |
Stiffness |
132 |
153 |
1000 kg/cm2 |
Tangential Shrinkage |
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% |
Radial Shrinkage |
5 |
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% |
Weight |
817 |
673 |
kg/m3 |
Maximum Load |
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cm-kg/cm3 |
Toughness |
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cm-kg |
Static Bending |
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kg/cm2 |
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| | | | Item | Green | Dry | English | Bending Strength | 19075 | 27747 | psi | Density | | 52 | lbs/ft3 | Hardness | | 2160 | lbs | Impact Strength | | 45 | inches | Maximum Crushing Strength | 6220 | 9173 | psi | Shearing Strength | | 2722 | psi | Stiffness | 1888 | 2183 | 1000 psi | Weight | 51 | 42 | lbs/ft3 | Radial Shrinkage | 5 | | % | Tangential Shrinkage | 9 | | % | |
Density (dry weight) = 46-52 lbs/cu. ft. 0 Density (dry weight) = 61-67 lbs/cu. ft. 0 Density (dry weight) = 53-60 lbs/cu. ft. 0 Max. crushing strength = high 1 Shrinkage, Radial = fairly large Max. crushing strength = medium Shrinkage, Tangential = fairly large Shrinkage, Radial = large Hardness (side grain) = medium Bending strength (MOR) = medium Toughness-Hammer drop (Impact Strength) = medium Shrinkage, Tangential = moderate Shearing strength (parallel to grain) = very high Modulus of Elasticity (stiffness) = high Hardness (side grain) = soft Bending strength (MOR) = low Shrinkage, Radial = small Shearing strength (parallel to grain) = high Modulus of Elasticity (stiffness) = medium Hardness (side grain) = hard Bending strength (MOR) = very high Modulus of Elasticity (stiffness) = low Hardness (side grain) = very hard Bending strength (MOR) = high Shrinkage, Tangential = large Shrinkage, Radial = moderate Shearing strength (parallel to grain) = very low Shearing strength (parallel to grain) = medium Shearing strength (parallel to grain) = low Modulus of Elasticity (stiffness) = very low Modulus of Elasticity (stiffness) = very high
Battiscombe, E.,1926,A Descriptive Catalogue of some of the Common Trees and Woody Plants of,Kenya Colony,Crown Agents for the Colonies LondonBois, P.J.,1966,The Strength Properties of Tanzania Timbers,Tanzania Forest Div. Util. Sec. Moshi Tech. Note, No.35Bolza, E., Keating, W.G.,1972,African Timbers - the Properties, Uses and Characteristics of 700 Species,C.S.I.R.O. Div. of Building ResearchBrenan, J.P.M., Greenway, P.J.,1949,Check-lists of the Forest Trees and Shrubs of the British Empire,Imperial Forestry Institute, Oxford No.5 Tanganyika Territories Part 2Bryce, J.M.,1967,Commercial Timbers of Tanzania,Tanzanian Forestry Division Util. Sec. MoshiEggeling, W.J.,1940,Indigenous Trees of Uganda,Govt. Printer Entebbe UgandaFouarge, J., Gerard, G.,1964,Bois du Mayumbe,I.N.E.A.C. BelguimGoldsmith, B., Carter, D.T.,1981,The Indigenous Timbers of Zimbabwe,Forestry Commission, Zimbabwe Research Bulletin No.9Hughes, J.F.,1971,The Principal Timber Trees of Cameroon,Unpublished dataKeay, R.W.J.,1964,Nigerian Trees Vol.2,Nigeria Federal Department of Forest Research, IbadanKennedy, J.D.,1936,Forest Flora of Southern Nigeria,Government Printer LagosLebacq, L., Dechamps, R.,1967,Contribution a un Inventaire de Forets du Nord-kasai,Musee Royal de L'Afrique Centrale Belgium Annals Series 8 No.5Murira, K.,1984,Natural Durability Tests of Tanzanian Timbers 1955 - 1982,Tanzania Forestry Research Institute, Timber Utilisation Research Centre,,Moshi.Patterson, D.N.,1963,The strength of Kenya timbers, their derivation and application,Kenya Forestry Department Research Bulletin,No.23Sallenave, P.,1971,Proprietes Physiques et Mecaniques des Bois Tropicaux (Deuxieme,Supplement,C.T.F.T.Tack, C.H.,1969,Uganda Timbers,Govt. Printer UgandaTakahashi, A.,1978,Compilation of Data on the Mechanical Properties of Foreign Woods (Part,III) Africa,Shimane University, Japan, Research Report on Foreign Wood No. 7Tanzania Forest Department,1964,Strombosia scheffleri (msangana,Tanzania Forest Div. Util. Sec. Moshi - Timbers of TanganyikaTanzania Forest Division,1966,Kiln Drying Schedules for Tanzania Timbers Technical Note no.38,Tanzania Forest Div. Util. Sec. MoshiUganda Forest Department,1954,Munyankono,Uganda Forestry Department Timber Leaflet,No35Uganda Forest Department,1954,The Mechanical Properties of some Ugandan Timbers,Uganda Forest Department Timber Leaflet,No.1Wimbush, S.H.,1950,Catalogue of Kenya Timbers,Govt. Printer Nairobi Kenya
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