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Iroko (Chlorophora regia)
Family: Moraceae Common names: Abang, Cambala, Iroko, Kambala, Lusanga, Mandji, Mereira, Mokongo, Molundu, Moreira, Mvule, Mvuli, Myule, Odoum, Odum, Oroko, Rokko, Semli, Sili, Simme, Timmi, Tomboiro noir, Tule mufala Distributed in: Angola, Congo, Gambia, Ghana, Guinea, Ivory Coast, Liberia, Senegal, Sierra Leone (Africa) Distribution overview: This widespread species occurs in Benin, Cameroon, Cd'Ivoire, Gambia, Ghana, Guinea-Bissau, Guinea, Liberia, Sierra Leone and Senegal. Introduced into Nigeria. It shows a preference for dry, flat, light areas. Common uses: Agricultural implements, Boat building (general), Boat building, Bridge construction, Building materials, Cabinetmaking, Canoes, Carvings, Chairs, Chests, Concealed parts (Furniture), Cooperages, Core Stock, Decorative veneer, Desks, Dining-room furniture, Domestic flooring, Dowell pins, Dowells, Drawer sides, Excelsior, Factory flooring, Figured veneer, Fine furniture, Floor lamps, Flooring, Framing, Furniture , Furniture components, Furniture squares or stock, Furniture, Hatracks, Heavy construction, Interior construction, Interior trim, Joinery, Kitchen cabinets, Lifeboats, Light construction, Living-room suites, Lock gates, Marine construction, Millwork, Moldings, Office furniture, Parquet flooring, Piling, Plain veneer, Radio - stereo - TV cabinets, Rustic furniture, Stairworks, Tables, Turnery, Vats, Veneer, Wheels Product sources: The ITTO reports that the species is a regular source of timber. Timber export is regular except in the Ivory Coast where exportation of the material in log form is prohibited. Environment profile: Status unknown in many of its growth areas Tree size: Trunk diameter is 100-150 cm
Colors: the heart isYellow to golden-yellow to orange, Yellowish tanand the sapwoodWhite to yellow, Yellow.The grain isStriped figure, the textureMedium to coarseand the lusterMedium
Natural durability: Sapwood susceptible to attack by powder post beetles, Very durable Kiln Schedules: UK=E US=T6D2/T3D1 Fr=5 Drying Defects: Distortion (twist/warp) is likely, Slight surface checking Ease of Drying: Easy
Tree Identification: Bole/stem form is straight Comments: Calcareous stone deposits present General finishing qualities are rated as good Reaction wood Blunting Effect: Blunting effect on sawing green wood is severe Gluing: Glues well Nailing: Good nailing properties, Holds nails well Planing: good Resistance to Impregnation: Sapwood is permeable Response to hand tools: Satisfactorily Steam bending: Moderate
Screwing: Easy to screw, Satisfactory screwing properties;
Painting: Poor; Polishing: Good; Staining: Stains well after surface treatment
; Varnishing: Satisfactory after treatment;
Bending strength (MOR) = medium Modulus of Elasticity (stiffness) = very low Hardness (side grain) = soft Density (dry weight) = 38-45 lbs/cu. ft. Bending strength (MOR) = high Shrinkage, Tangential = very small Shrinkage, Tangential = small Shrinkage, Radial = very small Shrinkage, Radial = small Max. crushing strength = medium Max. crushing strength = low Max. crushing strength = high Heavy Density = high Density (dry weight) = 46-52 lbs/cu. ft. Density (dry weight) = 31-37 lbs/cu. ft. Compression strength (parallel to grain) = high Bending strength (MOR) = very high Bending strength (MOR) = low 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.48Bolza, 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.,1976,Timber and Health,Div. Building Res. C.S.I.R.O. AustraliaChudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.Erfurth, T., Rusche, H.,1976,The Marketing of Tropical Wood A. Wood Species from African Moist Forests,F.A.O. Forestry DepartmentGotz, E.,1983,Timber trees of the Gambia,Stiftung Walderhaltung in Afrika and Bundesforschungsanstalt fur Forst-,und HolzwirtschaftHMSO.1972.Handbook of Hardwoods.2nd Edition.Revised by R.H. Farmer.Department of the Environment, Building Research Establishment, Princes Risborough Laboratory, Princes Risborough, Aylesbury, Buckinghamshire.ITTO.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.Lincoln, W.A. 1986.World Woods in Color.Linden Publishing Co. Inc.,Fresno, California.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 |
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