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Blunting Effect Common Names Common Uses Countries of Distribution Cutting Resistance Drying Defects Ease of Drying Family Name Gluing Grain Heartwood Color Kiln Schedules Light-Induced Color Change Movement in Service Nailing Natural Durability Natural Growth Defects Numerical Data Painting Planing Polishing References Regions of Distribution Resistance to Impregnation Response to Hand Tools Routing & Recessing Sapwood Color Scientific Name Screwing Strength Properties Synonyms Texture Trade Name Tree Size Varnishing		Scientific Name Faidherbia albida Trade Name Ana-tree Family Name Leguminosae Synonyms Prosopsis kirkii, Acacia albida, Acacia gyrocarpa, Acacia saccharata Common Names Ana-tree, Anaboom, Apple ring acacia, Cad, Ege, Gawo, Gozanga, Haraz, Haraza, Janweo, Kababu, Karage, Kenya acacia, Kyashi, Kyaski, Mapogoro, Mpagoro, Mpogola, Mranda, Muchangwe, Mujeha, Mukababu, Munga, Mungnanunshi, Musangu, Mwiba, Nanda, Puhu-weni, Puhuri-wooni, Umpumpu, Umtungabayeni, White thorn, Winter thorn, Zizano Regions of Distribution Africa, Oceania and S.E. Asia Countries of Distribution  [VIEW MAP] Israel, Tanzania, Uganda, Zimbabwe Common Uses Boat building (general), Boxes and crates, Canoes, Carvings, Charcoal, Concrete formwork, Fuelwood, Furniture, Heavy construction, Joinery, Light construction, Oars, Paneling, Posts, Pulp/Paper products, Tool handles, Turnery Heartwood Color White Yellow to golden-yellow to orange White to cream Pale red to pink Pale brown Sapwood Color White White to yellow Same as heartwood Paler than heartwood Grain Figure Interlocked Other (figure) Distinct (figure) Closed Wavy Stripe (figure) Texture Coarse Coarse Natural Growth Defects Latex or other ducts Natural Durability Perishable Sapwood is susceptible to wood staining fungal attack Heartwood is susceptible to wood staining fungal attack Susceptible to attack from powder post (Lyctid & Bostrychid) beetles Susceptible to attack from termites (Isoptera) Non durable Light-Induced Color Change None Kiln Schedules Drying (speed) is fast Drying Defects Moderate twist/warp Slight surface checking Slight end splitting Severe collapse and honeycomb Moderate surface checking Moderate spring/bow Moderate end spitting Moderate cupping Ease of Drying Difficult Tree Size Tree height is 30-40 m Trunk diameter is 300-350 cm Blunting Effect Blunting effect on machining is slight Blunting effect on machining is moderate Cutting Resistance Cutting Resistance with dry wood is difficult Cutting resistance with dry wood is variable Gluing Easy to glue Movement in Service Medium Stable Small Nailing Easy to nail Difficult to nail Planing Planes well, to a good finish Planes to a poor finish Resistance to Impregnation Heartwood is permeable Response to Hand Tools Easy to Work Easy to machine Difficult to machine Routing & Recessing Routing is easy Screwing Easy to screw Painting Good results Polishing Satisfactory results Varnishing Good results Strength Properties Bending strength (MOR) = low Modulus of Elasticity (stiffness) = very low Max. crushing strength = low Density (dry weight) = 31-37 lbs/cu. ft. Hardness (side grain) = soft Shearing strength (parallel to grain) = low Shrinkage, Tangential = fairly large Toughness-Hammer drop (Impact Strength) = very low Shrinkage, Radial = small Shearing strength (parallel to grain) = very low Shrinkage, Radial = moderate Hardness (side grain) = medium Toughness-Hammer drop (Impact Strength) = low Shrinkage, Volumetric = moderate Shrinkage, Volumetric = fairly large Shrinkage, Tangential = very small Shrinkage, Radial = very small Shrinkage, Radial = fairly large Modulus of Elasticity (stiffness) = low Bending strength (MOR) = medium Toughness-Hammer drop (Impact Strength) = medium Shrinkage, Tangential = small Shrinkage, Tangential = moderate Max. crushing strength = medium Max. crushing strength (stiffness) = very low Hardness (side grain) = very soft Density (dry weight) = 38-45 lbs/cu. ft. Density (dry weight) = 23-30 lbs/cu. ft. Numerical Data Item Green Dry English Bending Strength 6569 10300 psi Density 32 lbs/ft3 Hardness 1103 lbs Impact Strength 22 inches Maximum Crushing Strength 2519 4412 psi Shearing Strength 1289 psi Stiffness 1074 1259 1000 psi Weight 31 25 lbs/ft3 Radial Shrinkage 3 % Tangential Shrinkage 7 % Volumetric Shrinkage 12 % Item Green Dry Metric Bending Strength 461 724 kg/cm2 Density 512 kg/m3 Hardness 500 kg Impact Strength 55 cm Maximum Crushing Strength 177 310 kg/cm2 Shearing Strength 90 kg/cm2 Stiffness 75 88 1000 kg/cm2 Weight 496 400 kg/m3 Radial Shrinkage 3 % Tangential Shrinkage 7 % References Banks, 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.48 Banks, 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] Bois, P.J.,1966,The Strength Properties of Tanzania Timbers,Tanzania Forest Div. Util. Sec. Moshi Tech. Note, No.35 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 Brenan, 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 2 Bryce, J.M.,1967,Commercial Timbers of Tanzania,Tanzanian Forestry Division Util. Sec. Moshi Eggeling, W.J.,1940,Indigenous Trees of Uganda,Govt. Printer Entebbe Uganda Fanshawe, D.B.,1962,Fifty Common Trees of Northern Rhodesia,Natural Resources Board and Forestry Department, Ndola Forest Products Research Laboratory, U.K.,1968,Report on 2 consignments of Haraz - Acacia albida - from the Republic,Sudan,Forest Products Research Laboratory, Princes Risborough, Building Research,Establishment Reports on Overseas Timbers,No.10 Giffard, P.L.,1971,Recherches complementaires sur Acacia albida (Del.,Bois et Forets des Tropiques,No.135,pp3-20 Goldsmith, B., Carter, D.T.,1981,The Indigenous Timbers of Zimbabwe,Forestry Commission, Zimbabwe Research Bulletin No.9 Irvine, F.R.,1961,Woody Plants of Ghana,O.U.P. London Keay, R.W.J.,1964,Nigerian Trees Vol.2,Nigeria Federal Department of Forest Research, Ibadan McCoy-Hill, M.,1954,Timbers of Tanganyika - Bussei (Entandrophragma bussei) and Mranda (Acacia,albidia,Timber Technology,62(2186,p602 Murira, K.,1984,Natural Durability Tests of Tanzanian Timbers 1955 - 1982,Tanzania Forestry Research Institute, Timber Utilisation Research Centre,,Moshi. Nigeria Department of Forest Research,1967,The Properties of Some Savanna Timber Trees,Nigeria Federal Department of Forest Research, Ibadan Report, No.11 Pardy, A.A.,1953,Notes on Indigenous Trees and Shrubs of S. Rhodesia - Acacia albida,Ministry of Agriculture and Lands S. Rhodesia,Bulletin,No.1728 Sallenave, P.,1971,Proprietes Physiques et Mecaniques des Bois Tropicaux (Deuxieme,Supplement,C.T.F.T. Scott, M.H.,1935,Weights of South African Growth Timbers,South African Department of Agriculture and Forestry Bulletin,No.145,Forest Products Institute, Forestry Series No.1 Takahashi, A.,1978,Compilation of Data on the Mechanical Properties of Foreign Woods (Part,III) Africa,Shimane University, Japan, Research Report on Foreign Wood No. 7 Tanzania Forest Department,1960,The Natural Durability of Local Timbers,Tanzanian Forest Dept. Tech. Note,No.14 Tanzania Forest Department,1967,Acacia albida (Kababu,Tanzania Forest Div. Util. Sect. Moshi - Timbers of Tanganyika West, O.,1950,Indigenous Tree Crops for Southern Rhodesia,Ministry of Agriculture and Lands S. Rhodesia Bulletin,No.1520 White, F.,1962,Forest Flora of Northern Rhodesia,O.U.P. London