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Clicking any heading in the main data area (at right) will scroll the page back to this top position. Use the following links to jump to the associated section in the main data. Blunting Effect Boring Carving Comments Common Names Common Uses Countries of Distribution Cutting Resistance Ease of Drying Environmental Profile Family Name Gluing Grain Heartwood Color Mortising Moulding Nailing Natural Durability Numerical Data Planing Product Sources References Regions of Distribution Resistance to Impregnation Response to Hand Tools Routing & Recessing Sapwood Color Scientific Name Screwing Strength Properties Texture Trade Name Tree Size Turning Weathering Scientific Name Asteropeia rhopaloides Trade Name Manoka jaune Family Name Theaceae Common Names Manko, Manoka jaune, Manoko, Manoko mavo Regions of Distribution Africa Countries of Distribution  [VIEW MAP] Central African Republic, Madagascar Common Uses Agricultural implements, Boat building (general), Boat building, Building construction, Building materials, Cabin construction, Canoes, Carvings, Chairs, Charcoal, Chests, Concealed parts (Furniture), Construction, Crossties, Desks, Dining-room furniture, Domestic flooring, Dowell pins, Dowells, Drawer sides, Excelsior, Factory construction, Factory flooring, Fine furniture, Floor lamps, Flooring, Fuelwood, Furniture , Furniture components, Furniture squares or stock, Furniture, Hatracks, Heavy construction, Interior construction, Interior trim, Joinery, Kitchen cabinets, Lifeboats, Living-room suites, Millwork, Mine timbers, Moldings, Office furniture, Parquet flooring, Poles, Posts, Radio - stereo - TV cabinets, Railroad ties, Rustic furniture, Sporting Goods, Turnery, Vehicle parts Environmental Profile Status has not been officially assessed Heartwood Color Brown Yellow Pale brown Occasional stripes Sapwood Color Brown Yellow Pale yellow-brown, and occasionally striped Not clearly differentiated from the heartwood Grain Even Interlocked Straight Straight Straight to interlocked Interlocked Texture Fine Fine Natural Durability Durable Susceptible to insect attack Resistant to powder post beetles Resistant to attack from powder post (Lyctid & Bostrychid) beetles Naturally resistant to attack by decay fungi and other wood destroying organisms Good weathering characteristics Durable Weathering Good Ease of Drying Moderately Difficult to Difficult Fairly difficult to dry Difficult Tree Size Tree height is 20-30 m Product Sources The ITTO reports that timber from this species is produced at low but regular rate. Export potential is rated as fair.The timber is available in adequate quantities and is prized in the moderate range. It has a wide range of applications in Brazil, where the timber is used to construct entire buildings. Reports indicate that Peroba rosa leads all other hardwoods from Brazil in availability and procurement quantities. The color of the Peroba timbers are often used to indicate the name. For example, Peroba reta has conspicuous black streaks, Peroba miuda is red with darker patches, Peroba peca is a white wood, Peroba rajada is light red with lighter patches, almost golden, and Peroba revesa has a figure similar to that in bird's eye maple. Comments Hard and heavy, and is often used in the round form Blunting Effect Requires specially tipped cutters Boring Fairly difficult to very difficult Carving Fairly Difficult to Very Difficult Cutting Resistance Easy to saw Fairly easy to saw The timber saws fairly easily with metal tipped cutters Gluing Fair to Good Results Fairly Easy to Very Easy Good gluing properties Easy to glue Mortising Fairly Difficult to Very Difficult Moulding Fairly Difficult to Very Difficult Nailing Pre-Boring Recommended Fairly Difficult to Very Difficult Pre-boring recommended Difficult to nail Pre-Boring is recommended since the timber is characteristically hard and heavy. Planing Fair to Good Results Fairly Difficult to Very Difficult Requires special tipped cutters to facilitate conversion because it is hard and heavy Finishes well but material with interlocked grain may pick up in planing Resistance to Impregnation Resistant sapwood Resistant heartwood Sapwood is moderately resistant Resistant to preservative treatment Heartwood is resistant Response to Hand Tools Fairly Difficult to Difficult to Work Routing & Recessing Fairly Difficult to Very Difficult Screwing Pre-boring recommended Turning Fairly Difficult to Very Difficult Strength Properties Max. crushing strength = very high Bending strength (MOR) = very high Shrinkage, Tangential = moderate Shrinkage, Radial = small Shrinkage, Radial = moderate Hardness (side grain) = very hard Bending strength (MOR) = high Very dense Shrinkage, Tangential = large Shrinkage, Tangential = fairly large Shrinkage, Radial = large Shrinkage, Radial = fairly large Hardness (side grain) = hard Density (dry weight) = 46-52 lbs/cu. ft. Numerical Data Item Green Dry English Bending Strength 17974 25945 psi Density 51 lbs/ft3 Hardness 2732 lbs Maximum Crushing Strength 10035 13590 psi Weight 46 37 lbs/ft3 Radial Shrinkage 4 % Tangential Shrinkage 8 % Item Green Dry Metric Bending Strength 1263 1824 kg/cm2 Density 817 kg/m3 Hardness 1239 kg Maximum Crushing Strength 705 955 kg/cm2 Weight 737 592 kg/m3 Radial Shrinkage 4 % 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 Gueneau, P., Gueneau, D.,1969,Proprietes Physiques et Mecaniques des Bois Malagaches,CTFT Madagascar Keating, W.G., Bolza, E.,1982,Characteristics properties and uses of timbers. South East Asia, Northern,Australia and the Pacific,C.S.I.R.O. Div. Chemical Technology,Inkata Press,1 Sallenave, P.,1955,Proprietes Phyiques et Mecaniques des Bois Tropicaux de l'Union Francaise,C.T.F.T 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