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AntiarisAntiarisAntiaris
Antiaris (Antiaris africana)

Family: Moraceae

Common names: Akede, Ako, Andoum, Antiaris, Bark cloth tree, Bofu-kenge, Bofue, Bofui, Bofuni, Bonkonko, Bovili, Chenchen, Diolosso, Egyany, Elwa, False iroko, False mvule, Fou, Hachu, Handame, Hanton, Jafo, Ju-u, Kakulu kodzo, Kan, Kesuba, Kirundu, Kudzo, Kyenkyen, Logotsi, Lulundu, Man, Mbondo, Mkunde, Mkunzu, Mkuzu, Mlulu, Mnguonguo, Muherere, Mulundo, Mulundulundu, Mumaka, Munsende, Mutie, Ofu, Ogiovu, Olwaa, Oro, Pau bicho branco, Pou, Ripi, Sansama, Sili, Terap, Tide, Tomboiro blanc, Toumboturo blanc, Tsangu, Upas tree, Zaadi

Distributed in: Australia, Benin, Cameroon, Gambia, Ghana, Guinea Bissau, Guinea, Ivory Coast, Kenya, Liberia, Mali, Nigeria, Senegal, Sierra Leone, Sudan, Tanzania, Togo, Uganda, Zaire (Africa, Oceania and S.E. Asia)

Distribution overview: Tropical Africa.

Common uses: Agricultural implements, Bedroom suites, Boat building (general), Boat building, Boxes and crates, Building materials, Cabinetmaking, Canoes, Carvings, Casks, Chairs, Charcoal, Chemical derivatives, Chests, Concealed parts (Furniture), Cooperages, Core Stock, Decorative plywood, Decorative veneer, Desks, Dining-room furniture, Door, Dowell pins, Dowells, Drawer sides, Excelsior, Figured veneer, Fine furniture, Floor lamps, Flooring, Furniture , Furniture components, Furniture squares or stock, Furniture, Hatracks, Interior construction, Interior trim, Joinery, Kitchen cabinets, Lifeboats, Light construction, Living-room suites, Matches, Millwork, Moldings, Office furniture, Packing cases, Paneling, Plain veneer, Plywood corestock, Plywood, Pulpwood, Shingles, Shipbuilding, Sporting Goods, Tool handles, Vehicle parts, Veneer, Veneer: decorative

Environment profile: Status unknown in many of its growth areas

Tree size: Trunk diameter is 150-200 cm

Colors: the heart isYellow to golden-yellow to orange, Yellowish tanand the sapwoodWhite to yellow, Yellow.The grain isWeak figure, the textureModerately coarseand the lusterSlightly lustrous

Natural durability: Very little resistance to decay, susceptible to sap stain

Odor: Unpleasant odor which disappears after seasoning

Kiln Schedules: UK=E US=T6D2/T3D1 Fr=5

Kiln Drying Rate: Rapid (<10 days for boards < 32 mm, to <30 days for boards >= 63 mm)

Drying Defects: Splitting, Tendency to stain and slight distortion may occur

Ease of Drying: Slowly

Tree Identification: Bole/stem form is straight

Comments: General finishing qualities are rated as good Tendency to corrode and stain metals is controllable Very little or slight tendency to splinter

Blunting Effect: Slight blunting effect on cutting tools

Boring: Should be adequately supported to prevent break-out at tool exits

Carving: Fairly Difficult to Very Difficult

Cutting Resistance: Saw without difficulty

Gluing: Good gluing properties

Mortising: Support material during mortising to prevent break out.

Moulding: Fairly Difficult to Very Difficult

Movement in Service: Fairly Difficult to Very Difficult

Nailing: Satisfactory nailing properties, Very Good to Excellent

Planing: Very Good to Excellent

Resistance to Impregnation: Resistant sapwood

Response to hand tools: Works fairly easily with hand tools

Routing recessing: Fairly Difficult to Very Difficult

Veneering qualities: Veneers easily, Veneers moderately easy

Steam bending: Very poor

Screwing: Fairly Easy to Very Easy, Satisfactory screwing properties; Turning: Poor to Very Poor Results

Painting: Takes paint satisfactorily ; Polishing: Satisfactory; Staining: Very Good to Excellent; Varnishing: Very Good to Excellent;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity 0,32 0,35
Density 432 kg/m3
Bending Strength 376 583 kg/cm2
Crushing Strength 219 370 kg/cm2
Hardness 212 kg
Impact Strength 35 cm
Shearing Strength 75 kg/cm2
Stiffness 67 80 1000 kg/cm2
Tangential Shrinkage 6 %
Radial Shrinkage 3 %
Weight 785 416 kg/m3
Maximum Load 0,35 0,42 cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 5357 8301 psi
Density 27 lbs/ft3
Hardness 469 lbs
Impact Strength 14 inches
Maximum Crushing Strength 3127 5271 psi
Shearing Strength 1071 psi
Stiffness 955 1147 1000 psi
Work to Maximum Load 5 6 inch-lbs/in3
Specific Gravity 0.32 0.35
Weight 49 26 lbs/ft3
Radial Shrinkage 3 %
Tangential Shrinkage 6 %
Volumetric Shrinkage 12 %

Bending strength (MOR) = low 0
Modulus of Elasticity (stiffness) = very low 0
Max. crushing strength = medium 0
Hardness (side grain) = very soft 0
Density (dry weight) = 23-30 lbs/cu. ft. 0
Shrinkage, Radial = very small 0
Shearing strength (parallel to grain) = very low 0
Max. crushing strength = low 1
Shrinkage, Tangential = very small
Toughness-Hammer drop (Impact Strength) = very low
Density (dry weight) = 31-37 lbs/cu. ft.
Shrinkage, Tangential = moderate
Shrinkage, Tangential = large
Shrinkage, Radial = moderate
Modulus of Elasticity (stiffness) = low
Bending strength (MOR) = very low
Shrinkage, Volumetric = large
Shrinkage, Tangential = small
Shrinkage, Radial = small
Hardness (side grain) = soft
Shrinkage, Volumetric = fairly large
Shearing strength (parallel to grain) = low
Bending strength (MOR) = medium
Work to Maximum Load = very low
Shrinkage, Volumetric = moderate
Shrinkage, Tangential = fairly large
Shrinkage, Radial = large
Shrinkage, Radial = fairly large
Not hard
Dents and marrs easily
Density (dry weight) = 38-45 lbs/cu. ft.
Density (dry weight) = 15-22 lbs/cu. ft.
Compression strength (parallel to grain) = medium
Bending stength to shock loads=low
Average weight
Average density
Its strength in compression, or maximum crushing strength, is medium - lower than that of Mahogany or Teak

Armstrong, F.H.,1960,The Strength Properties of Timber,Forest Products Research Laboratory, London Bulletin,No.45Babajide, Lucas E., Shegun, Ajayi D.,1966,Stiffness and specific gravity related to other mechanical properties for,seven tropical timbers.,Nigeria Federal Department Forest Research, Ibadan, Report No.10Bois et Forets des Tropiques,1964,Ako (Antiaris,Bois et Forets Tropiques,97,pp17-21Bois, 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 ResearchBolza, E., Kloot, N.H.,1976,The Mechanical Properties of 81 New Guinea Timbers,C.S.I.R.O. Div. Building Res. Tec.Paper (2nd series) 11Bolza, E.,1975,Properties and Uses of 175 Timber Species from Papua New Guinea and West,Irian,C.S.I.R.O. Div. Building Research Report,no.34Browne, F.G.,1955,Forest Trees of Sarawak and Brunei and their Products.,Government Printing Office, Kuching, SarawakBrown, W.H.,1969,Properties and uses of Tropical hardwoods in the United Kingdom. Part 1,Nonstructural properties and uses.,Conference on Tropical hardwoods SC-5/TN-5, Syracuse UniversityBryce, J.M.,1967,Commercial Timbers of Tanzania,Tanzanian Forestry Division Util. Sec. MoshiCause, M.L.; Rudder, E.J. and Kynaston, W.T.,1989,Queensland Timbers Their Nomenclature, Density, and Lyctid Susceptability,Queensland Department of Forestry, Technical Pamplet No.2Chudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.Clifford, N.,1953,Commercial Hardwoods - Their Characteristics Identification and,Utilization,Sir Isaac Pitman & Sons Ltd. LondonDalziel, J.M.,1937,The Useful Plants of West Tropical Africa,Crown Agents for the ColoniesEddowes, P.J.,1977,Commercial Timbers of Papua New Guinea: Their Properties and Uses,Hebano Press, Port Moresby, Papua New GuineaEdlin, H.L. 1969. What Wood is That?: A Manual of Wood Identification. A Studio Book, The Viking Press, New York.Erfurth, T., Rusche, H.,1976,The Marketing of Tropical Wood A. Wood Species from African Moist Forests,F.A.O. Forestry DepartmentFarmer, R.H.,1972,Handbook of Hardwoods,HMSOForest Products Research Laboratory, U.K.,1950,The Seasoning Properties of Exotic Timbers,Forest Products Research Laboratory, Princes Risborough, Department of,Science and Industrial Research Leaflet,No.44 and supplements 1 & 2Forest Products Research Laboratory, U.K.,1951,Antiaris - Antiaris africana,Forest Products Research Laboratory, Princes Risborough, Department of,Science and Industrial Research,Timber LeafletForests Products Research Laboratory, U.K.,1956,A Handbook of Hardwoods,Forest Products Research Laboratory, Princes Risborough, Department of,Science and Industrial Research, Building Research EstablishmentFouarge, J., Gerard, G.,1964,Bois du Mayumbe,I.N.E.A.C. BelguimFouarge, J.,1950,Appropriation de Bois Congolais aux Besoins de la Metropole,I.N.E.A.C. Belgium Serie Technique,No.38Fouarge, J.,1970,Essais Physiques,Mecaniques et de Durabilite de Bois de la Republique,Democratique du Congo,I.N.E.A.C. Belgium Serie Technique,No.76France - C.T.F.T./C.T.B.,1982,Guide pour le Choix des Essences Deroulables-pour la fabrication du,contreplaque,C.T.F.T./C.T.B. FranceFrance - C.T.F.T.,1966,Bois Tropicaux,C.T.F.T. Publ.,12France - Comite Nacional des Bois Tropicaux,1938,Nos Bois Tropicaux Principaux Emplois et Essances Recommandees,Comite Nacional des Bois Tropicaux Technical paper (Paris)Ghana - Timber Marketing Board,1969,Ghana Hardwoods,Timber Marketing BoardGotz, E.,1983,Timber trees of the Gambia,Stiftung Walderhaltung in Afrika and Bundesforschungsanstalt fur Forst-,und HolzwirtschaftHMSO.1981.Handbook of Hardwoods, 2nd Edition.Revised by R. H. Farmer. Department of the Environment, Building Research Establishment, Princes Risborough Laboratory, Princes Risborough, Aylesbury, Buckinghamshire.Hughes, J.F.,1971,The Principal Timber Trees of Cameroon,Unpublished dataI.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 CuttingIrvine, F.R.,1961,Woody Plants of Ghana,O.U.P. LondonITTO.1986.Tropical Timber Atlas, Volume 1 - Africa.International Tropical Timber Organization (ITTO) and Centre Technique Forestier Tropical (CTFT, 45bis, Avenue de la Belle Gabrielle, Nogent-sur-Marne Cedex, France.Jane, F.W.,1951,The Structure of Timbers of the World (Part 5,Timber News,59(2149,pp484-7Jay, B.A.,1968,Timbers of West Africa,TRADA, Red Booklet SeriesKeay, R.W.J.1989. Trees of Nigeria.Revised Version of Nigerian Trees. Clarendon Press, Oxford.Kinloch, D., Miller, W.A.,1949,Gold Coast Timbers,Govt. Printer Gold CoastKryn, J.M., Forbes, E.W.,1959,The Woods of Liberia,U.S.A. Department of Agriculture,Forest Products Laboratory, Madison,,Report No. 2159Kukachka, B.F.,1970,Properties of Imported Tropical Woods,Forest Research Paper FPL 125Kunkel, G.,1965,The Trees of Liberia,German Forestry Mission to Liberia Report,No.3Lavers, G. M.1966.The Strength Properties of Timbers.Forest Products Research Bulletin, No. 50. Ministry of Technology, Her Majesty's Stationery Office, London. (Air-dry Values only).Lavers, 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)Lebacq, L., Dechamps, R.,1967,Contribution a un Inventaire de Forets du Nord-kasai,Musee Royal de L'Afrique Centrale Belgium Annals Series 8 No.5Lincoln, W. A.1986.World Woods in Color.Linden Publishing Co. Inc., Fresno, California.Malaysian Timber Industry Board,1986,100 Malaysian Timbers,The Malaysian Timber Industry BoardMurira, 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.23Patterson, D.,1988,Commercial Timbers of the World, 5th Edition,Gower Technical PressPieters, A.,1977,Essences Forestieres du Zaire,R.U.G. Gent BelguimRendle, B.J.,1969,World Timbers (3 Vols.,Ernest Benn Ltd. LondonSaint-Aubin, G. de,1963,La Foret du Gabon,CTFT Publ., No.21Sallenave, P.,1955,Proprietes Phyiques et Mecaniques des Bois Tropicaux de l'Union Francaise,C.T.F.TSallenave, P.,1964,Proprietes Physiques et Mecaniques des Bois Tropicaux (Premier Supplement,C.T.F.T. Publ.,no.23Tack, 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,Antiaris toxicaria (mkuzu/antiaris,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,Antiaris,Uganda Forestry Department Timber Leaflet,No.9Uganda Forest Department,1954,Musizi (Maesopsis eminii,Uganda Forestry Department Timber Leaflet,No.11Uganda Forest Department,1954,The Mechanical Properties of some Ugandan Timbers,Uganda Forest Department Timber Leaflet,No.1Uganda Forest Department,1969,The Shrinkage of Some Ugandan Timbers,Uganda Forestry Department Timber Leaflet,No.47WCMC.1992.Conservation Status Listing - Trees and Timbers of the World.World Conservation Monitoring Center-Plants Programme, Cambridge, CB3 ODL, United Kingdom.Wimbush, S.H.,1950,Catalogue of Kenya Timbers,Govt. Printer Nairobi KenyaWood, B., Calnan, D.,1976,Toxic Woods,British Journal of Dermat 94 Suppl. 13
*Come interpretare i dati (manleva su eventuali imprecisioni)