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Blunting Effect
Boring
Comments
Common Names
Common Uses
Countries of Distribution
Cutting Resistance
Distribution Overview
Drying Defects
Ease of Drying
Environmental Profile
Family Name
Gluing
Grain
Heartwood Color
Kiln Schedules
Light-Induced Color Change
Luster
Mortising
Moulding
Movement in Service
Nailing
Natural Durability
Numerical Data
Odor
Planing
Polishing
References
Regions of Distribution
Resistance to Impregnation
Response to Hand Tools
Sapwood Color
Scientific Name
Screwing
Silica Content
Staining
Steam Bending
Strength Properties
Texture
Trade Name
Tree Identification
Tree Size
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Common Names
Anegre, Aniegre, Aningeria, Aningeria blanc, Aningre, Asamfona, Kali, Kararo, Landojan, Landosan, M'boul, Mukalati, Mukali, Mukangu, Muna, Mutoke, N'kali, Nkalate, Nkalati, Osan, Tanganyika nuss, Tutu
Regions of Distribution
Africa
Countries of Distribution
[VIEW MAP]
Angola, Benin, Cameroon, Central African Republic, Congo, Ethiopia, Ghana, Guinea, Ivory Coast, Kenya, Liberia, Nigeria, Sudan, Togo, Uganda, Zaire
Common Uses
Bedroom suites, Boat building, Boxes and crates, Building construction, Building materials, Cabin construction, Cabinetmaking, Canoes, Chairs, Chests, Concealed parts (Furniture), Construction, Desks, Dining-room furniture, Domestic flooring, Dowell pins, Dowells, Drawer sides, Drum sticks, Excelsior, Factory construction, Factory flooring, Fine furniture, Floor lamps, Flooring, Furniture , Furniture components, Furniture squares or stock, Furniture, Hatracks, Heavy construction, Joinery, Kitchen cabinets, Lifeboats, Light construction, Living-room suites, Matches, Millwork, Mine timbers, Musical instruments , Office furniture, Organ pipes, Parquet flooring, Piano keys, Pianos , Plywood, Posts, Pulp/Paper products, Railroad ties, Shipbuilding, Turnery, Vehicle parts, Veneer: decorative
Environmental Profile
| Vulnerable |
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| Rare |
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| Vulnerable in parts of its natural habitat |
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| Status unknown in many of its growth areas |
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| Rare in parts of its natural range (population is at risk) |
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| Data source is World Conservation Monitoring Center |
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Rare in Ghana. Vulnerable in Ivory Coast. Status unknown in Congo, Ethiopia, Guinea, Ivory Coast, Sierra Leone, and Sudan
Distribution Overview
The genus is widespread in tropical Africa, particularly common in parts of East Africa from Guinea to Ethiopia, as well as Zambia and Gabon.
Heartwood Color
| Red |
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| Brown |
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| Pink |
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| White |
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| Yellow |
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| Green/grey |
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| Orange |
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| Pale red to pink |
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| Pale brown |
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| White to cream |
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| Yellow to golden-yellow to orange |
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| Reddish brown |
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| Mostly indistinct in color from sapwood |
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| Greenish to greyish |
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| Darkens slightly upon exposure |
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Sapwood Color
| White |
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| Brown |
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| Pink |
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| Red |
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| Yellow |
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| White to yellow |
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| Pale pink to reddish-brown |
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| Not clearly differentiated from heartwood |
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Grain
| Even |
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| Closed |
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| Figure |
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| Wavy |
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| Fiddleback (figure) |
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| Mottled (figure) |
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| Occasionally wavy |
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| Mottled figure |
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| Fiddleback figure |
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| Bee's Wing |
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Texture
| Medium |
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| Fine |
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| Coarse |
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| Medium to coarse |
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| Fine |
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| Medium |
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| Fine to medium |
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Luster
Natural Durability
| Susceptible to insect attack |
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| Perishable |
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| Non-resistant to termites |
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| Non-durable |
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| Non-resistant to powder post beetles |
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| Moderately durable |
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| Non-resistant to marine borers |
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| Susceptible to attack from termites (Isoptera) |
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| Sapwood is susceptible to wood staining fungal attack |
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| Perishable |
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| Pinworms (ambrosia beetles) may be present in the felled log |
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| Susceptible to attack from powder post (Lyctid & Bostrychid) beetles |
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| Pinworms (ambrosia beetles) often present in the standing tree |
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| Moderately durable |
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| Very little natural resistance |
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| Susceptible to marine borer attack |
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| Susceptible to attack by fungi and termites |
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| Pinworms (ambrosia beetles) are commonly present |
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| Non durable |
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Odor
| Has a taste |
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| Odor similar to cedar |
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| No specific taste |
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Silica Content
| Siliceous |
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| Sometimes siliceous |
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Light-Induced Color Change
Kiln Schedules
| UK=E US=T6D2/T3D1 Fr=5 |
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| T6-D4(4/4);T3-D1(8/4) US Schedule E; United Kingdom |
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Drying Defects
| Discoloration |
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| Seasons without checking or twisting |
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| Prone to blue stain during initial stages of drying |
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| No surface checking |
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Ease of Drying
| Fairly Easy |
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| Rapidly |
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| Reconditioning Treatement |
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| Easy |
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| Rapid extraction, conversion and drying is recommended |
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| Dries rapidly and well, with little degrade or defect |
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Tree Identification
| Bole/stem form is buttressed |
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| Bole/stem form is straight |
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| Bole/stem form is cylindrical |
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Tree Size
| Bole length is 20-30 m |
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| Tree height is 50-60 m |
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| Trunk diameter is 100-150 cm |
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| Tree height is 30-40 m |
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| Trunk diameter is 200-250 cm |
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Comments
General finishing qualities are rated as good
Blunting Effect
| Little |
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| High to severe |
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| Blunting effect on machining is slight |
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| Blunting edges rapidly and severely due to silica content in material |
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Boring
| Fair to good results |
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| Fairly difficult to very difficult |
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| Fairly easy to very easy |
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| Moderately easy |
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| Adequate support is necessary when boring to prevent chipping |
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Cutting Resistance
| Easy to saw |
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| Fairly Difficult to Very Difficult to saw |
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| Cutting Resistance with dry wood is easy |
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| Responds readily to carving operations |
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| Cutting resistance with dry wood is variable |
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Gluing
| Fair to Good Results |
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| Fairly Easy to Very Easy |
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| Good gluing properties |
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| Easy to glue |
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Mortising
| Fairly Difficult to Very Difficult |
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| Support material during mortising to prevent break out. |
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Moulding
| Very Good to Excellent Results |
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| Fair to Good Results |
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| Good finishing results |
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Movement in Service
| Fair to Good Stability - Medium Movement |
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| Excellent Stability - Small Movement |
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| Retains shape well after seasoning |
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| Dimensionally stable |
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Nailing
| Fairly Easy to Very Easy |
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| Fair to Good Results |
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| Good nail holding properties |
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| Easy to nail |
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Planing
| Poor to Very Poor Results |
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| Fairly Difficult to Very Difficult |
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| Planes to a poor finish |
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| Rather difficult to plane a smooth finish |
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Resistance to Impregnation
| Permeable heartwood |
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| Permeable sapwood |
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| Heartwood is permeable |
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| Moderately permeable to preservative treatment |
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Response to Hand Tools
| Easy to Work |
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| Responds Readily |
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| Easy to machine |
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| Responds well to hand tools but has moderate blunting on cutting edges |
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Screwing
| Fair to Good Results |
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| Fairly Easy to Very Easy |
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| Good screwing properties |
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Steam Bending
| Fair to Good Results |
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| Moderate steam bending characteristics |
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Polishing
| Fair to Good Results |
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| Good finishing characteristics |
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| Fairly good polishing characteristics |
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Staining
| Fair to Good Results |
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| Fairly Easy to Very Easy |
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| Good staining qualities |
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Strength Properties
| Max. crushing strength = medium |
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| Hardness (side grain) = soft |
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| Density (dry weight) = 31-37 lbs/cu. ft. |
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| Bending strength (MOR) = medium |
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| Shrinkage, Tangential = very small |
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| Shrinkage, Radial = very small |
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| Shearing strength (parallel to grain) = low |
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| Bending strength (MOR) = low |
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| Bending strength (MOR) = high |
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| Toughness-Hammer drop (Impact Strength) = very low |
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| Toughness-Hammer drop (Impact Strength) = low |
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| Shrinkage, Tangential = small |
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| Shrinkage, Tangential = moderate |
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| Shrinkage, Radial = small |
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| Shrinkage, Radial = large |
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| Modulus of Elasticity (stiffness) = very low |
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| Modulus of Elasticity (stiffness) = low |
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| Medium weight |
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| High in density |
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| Hardness = medium |
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| Density (dry weight) = 38-45 lbs/cu. ft. |
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| Compression strength (parallel to grain) = medium |
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It compares favorably with Teak, which also has high bending strength.It resists denting and marring about as well as white oak or birch
Numerical Data
| Item | Green | Dry | English |
| | | |
| Bending Strength | 8559 | 13043 | psi |
| Density | | 35 | lbs/ft3 |
| Hardness | | 1005 | lbs |
| Impact Strength | | 22 | inches |
| Maximum Crushing Strength | 4123 | 6507 | psi |
| Shearing Strength | | 1560 | psi |
| Stiffness | 1156 | 1420 | 1000 psi |
| Specific Gravity | 0.37 | 0.42 | |
| Weight | 40 | 34 | lbs/ft3 |
| Radial Shrinkage | 3 | | % |
| Tangential Shrinkage | 6 | | % |
| Volumetric Shrinkage | 12 | | % |
| | | |
| Item | Green | Dry | Metric |
| | | |
| Bending Strength | 601 | 917 | kg/cm2 |
| Density | | 560 | kg/m3 |
| Hardness | | 455 | kg |
| Impact Strength | | 55 | cm |
| Maximum Crushing Strength | 289 | 457 | kg/cm2 |
| Shearing Strength | | 109 | kg/cm2 |
| Stiffness | 81 | 99 | 1000 kg/cm2 |
| Specific Gravity | 0.37 | 0.42 | |
| Weight | 641 | 544 | kg/m3 |
| Radial Shrinkage | 3 | | % |
| Tangential Shrinkage | 6 | | % |
References
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
Chudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.
Eggeling, W.J.,1940,Indigenous Trees of Uganda,Govt. Printer Entebbe Uganda
Erfurth, T., Rusche, H.,1976,The Marketing of Tropical Wood A. Wood Species from African Moist Forests,F.A.O. Forestry Department
France - 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. France
France - C.T.F.T.,1973,Investigations and Tests carried out on Tropical Timber by several,Research Laboratories,CTFT
HMSO. 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.
I.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 Cutting
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.
Kaiser, J. 1990. Anegre. Wood of the Month Annual. Supplement to Wood and Wood Products, September, 1990, Page 18A.
Keay, R.W.J. 1989. Trees of Nigeria. Revised Version of Nigerian Trees. Clarendon Press, Oxford.
Lincoln, W. A. 1986. World Woods in Color. Linden Publishing Co. Inc., Fresno, California.
Patterson, D.N.,1963,The strength of Kenya timbers, their derivation and application,Kenya Forestry Department Research Bulletin,No.23
Tack, C.H.,1969,Uganda Timbers,Govt. Printer Uganda
Takahashi, A.,1978,Compilation of Data on the Mechanical Properties |