Abang (Cassipourea malosana)
Family: Rhizophoraceae
Common names: Abang, Aetiuget, Aganiya, Andewa, Bangui, Bastard onion wood, Basteruiehout, Chizanzasi, Engai saleki, Funzare, Funzari, Intule, Iroko, Kamba, Kambala, Kangamtibi, Ketiuget, Komoluet, Kusiu, Lesser onion wood, Lomolvet, Lusanga, Maiti, Mandji, Mangweta, Mapakajen, Martit, Mberemembe, Megunda, Mereira, Meyart, Mgiwi, Mpalala, Msadora, Msadoro, Msengera, Muangaita, Muchanja, Mulundu, Musaisi, Muzaisi, Mvula, Ndindi, Ndiri, Ndrie, Nekazito, Nkazito, Odoum, Ol-lorget, Pillarwood, Tendewa, Tule
Distributed in: Ethiopia, Kenya, Somalia, South Africa, Tanzania, Uganda (Africa)
Common uses: Agricultural implements, Brush backs & handles, Cabinetmaking, Flooring, Flooring: commercial heavy traffic, Flooring: industrial heavy traffic, Furniture, Handles: general, Heavy construction, Joinery, Ladders, Light construction, Piling, Plywood, Poles, Posts, Railroad ties, Sporting Goods, Tool handles, Toys, Turnery, Vehicle parts
Tree size: Trunk diameter is 100-150 cm
Colors: the heart isWhite to cream, Yellow to golden-yellow to orangeand the sapwoodWhite, Yellow.The grain isWeak figure, the textureResinous and oily
Natural durability: The sapwood is susceptible to wood staining fungal attack, Very durable
Kiln Schedules: Kiln Drying Rate (in days) is fairly rapid
Kiln Drying Rate: Rapid
Drying Defects: Slight surface checking, Splitting
Ease of Drying: Thick Stock Requires Care
Tree Identification: Bole/stem form is straight
Comments: General finishing qualities are rated as good
Blunting Effect: Moderate
Boring: Fairly easy to very easy
Carving: Fair to Good Results
Cutting Resistance: Easy to saw
Gluing: Moderate gluing properties
Mortising: Finishes satisfactorily
Moulding: Good finishing
Movement in Service: Good finishing
Nailing: Fairly Easy to Very Easy, Pre-boring recommended
Planing: Planes well, to a good finish
Resistance to Impregnation: Sapwood is moderately resistant
Resistance to Splitting: Satisfactory
Response to hand tools: Responds Readily
Routing recessing: Routing is easy
Sanding: Good sanding finish
Veneering qualities: Veneers easily, Veneers moderately easy
Steam bending: Unsuitable
Screwing: Fairly Difficult to Very Difficult, Fairly Easy to Very Easy; 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
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Item |
Green |
Dry |
Metric |
Specific Gravity |
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Density |
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737 |
kg/m3 |
Bending Strength |
726 |
1131 |
kg/cm2 |
Crushing Strength |
404 |
603 |
kg/cm2 |
Hardness |
|
601 |
kg |
Impact Strength |
|
93 |
cm |
Shearing Strength |
|
159 |
kg/cm2 |
Stiffness |
102 |
118 |
1000 kg/cm2 |
Tangential Shrinkage |
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% |
Radial Shrinkage |
4 |
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% |
Weight |
721 |
576 |
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 | 10334 | 16099 | psi | Density | | 46 | lbs/ft3 | Hardness | | 1326 | lbs | Impact Strength | | 37 | inches | Maximum Crushing Strength | 5752 | 8580 | psi | Shearing Strength | | 2269 | psi | Stiffness | 1460 | 1686 | 1000 psi | Weight | 45 | 36 | lbs/ft3 | Radial Shrinkage | 4 | | % | Tangential Shrinkage | 9 | | % | |
Bending strength (MOR) = medium 0 Max. crushing strength = high 0 Density (dry weight) = 46-52 lbs/cu. ft. 0 Shearing strength (parallel to grain) = medium 0 Modulus of Elasticity (stiffness) = low 0 Max. crushing strength = medium 1 Hardness (side grain) = soft 1 Hardness (side grain) = medium 1 Shrinkage, Tangential = large Shrinkage, Radial = fairly large Modulus of Elasticity (stiffness) = medium Bending strength (MOR) = high Shrinkage, Radial = small Shearing strength (parallel to grain) = high Shrinkage, Tangential = fairly large Toughness-Hammer drop (Impact Strength) = medium Toughness-Hammer drop (Impact Strength) = low Shearing strength (parallel to grain) = low Density (dry weight) = 38-45 lbs/cu. ft. Shrinkage, Tangential = small Shrinkage, Tangential = moderate Shrinkage, Radial = moderate Shrinkage, Radial = large Toughness-Hammer drop (Impact Strength) = high
Armstrong, F.H.,1960,The Strength Properties of Timber,Forest Products Research Laboratory, London Bulletin,No.45Banks, C.H., Schoeman, J.P., Otto, K.P.,1977,The Mechanical Properties of Timbers with particular reference to South,Africa,South African Forestry Research Institute Bulletin,(Ed.,Schoeman, J.P. 1973 & Otto K.P. 1976,No.48Banks, C.H.,1954,The Mechanical Properties of Timbers with Particular Reference to those,grown in the Union of South Africa,Journal of the South African Forestry Association,No. 24 pp.44-65,[South,African Forestry Journal]Battiscombe, E.,1926,A Descriptive Catalogue of some of the Common Trees and Woody Plants of,Kenya Colony,Crown Agents for the Colonies LondonBengough, C.C.,1971,Commercial Timbers of Kenya,Ministry of Natural Resources Forest Department, KenyaBois, P.J.,1961,An Experiment with Mechanical Restraint in Seasoning,Tanzania Forest Dept. Util. Div. Tech. Note,No.24Bois, 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 ResearchBryce, J. and Kitambi, G.,1960,The Air-drying Properties of some Tanganyika Timbers Technical Note No 23,Tanganyika Forest Department Utilisation Division Technical NoteBryce, J.M., Norcross, H.,1961,The Resistance of Tanganyika Timbers to Impregnation,Tanzania Forest Dept. Util. Sec .Tech. Note,No.28Bryce, J.M.,1967,Commercial Timbers of Tanzania,Tanzanian Forestry Division Util. Sec. MoshiChudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.Dale, I.R., Greenway, P.J.,1961,Kenya Trees and Shrubs,Buchanans Kenya Estates Ltd. Nairobi Hatchards LondonEggeling, W.J.,1940,Indigenous Trees of Uganda,Govt. Printer Entebbe UgandaGrant, D.K.S.,1934,Some Local Timbers,Tanzania Forest DepartmentI.U.F.R.O.,1973,Veneer Species of the World,Assembled at F.P.L. Madison on behalf of I.U.F.R.O. Working Party on,Slicing and Veneer CuttingKenya Forest Department,1941,Strengths of Kenya timbers,Kenya Forest Department Bulletin No. 36Kloot, N.H., Bolza, E.,1961,Properties of Timbers Imported into Australia,C.S.I.R.O. Forest Products Division Technological Paper,No.12Lavers, G.M.,1983,The Strength Properties of Timber (3rd ed. revised Moore G.L.,Forest Products Research Laboratory, Princes Risborough, Building Research,Establishment Report (formerly Bulletin No.50)Murira, K.,1984,Natural Durability Tests of Tanzanian Timbers 1955 - 1982,Tanzania Forestry Research Institute, Timber Utilisation Research Centre,,Moshi.Organisation for European Economic Co-operation,1951,African Tropical Timber (Nomenclature, Description,OEECPalgrave, K.C.,1977,Trees of Southern Africa,Cape Town South AfricaPatterson, D.N.,1963,The strength of Kenya timbers, their derivation and application,Kenya Forestry Department Research Bulletin,No.23Scott, M.H.,1950,Notes on the more Important African Timbers Imported into the Union with,Special Ref. to Port. E.A. Species,Journal of the South African Forestry Association,No.19,pp18-62,[South,African Forestry Journal]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,1958,The Working Properties of Cassipourea elliottii (Pillarwood,Tanzania Forest Dept. Util. Sec. Tech. Note, No.13Tanzania Forest Department,1960,Cassipourea malosana (Pillarwood,Tanzania Forest Dept. Util. Sec. Moshi - Timbers of TanganyikaTanzania Forest Department,1960,The Natural Durability of Local Timbers,Tanzanian Forest Dept. Tech. Note,No.14Tanzania Forest Department,1961,The Movement of Timbers Technical Note No.29,Tanzania Forest Department, Utilisation Division Technical NoteTanzania Forest Department,1966,Flooring Timbers,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. MoshiTanzania Forest Division,1967,The Weights and Shrinkage of some Local Timbers,Tanzania Forest Div. Util. Sect. Technical Note,No.25Timber Information Assoc. Ltd.,1947,Notes on East African Timbers,TRADA, Timber Information, No.28Uganda 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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