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DinaDinaDina
Dina (Swartzia fistuloides)

Family: Caesalpiniaceae

Common names: Akite, Asomanini, Awong, Bannia, Boto, Dina, Gandoe, Icoje, Kiela, Kiela kusu, Kisasamba, Kusu, Mututy, N'guessa, Naranjillo, Ndina, Nsakala, Oken, Orura barrialera, Pao rosa, Parakusan, Pau ferro, Pau rosa, Sambo, Sambo-sambo, Sambu, Sassambo, Wamara

Distributed in: Angola, Benin, Cameroon, Congo, Equatorial Guinea, Gabon, Ghana, Ivory Coast, Nigeria, Togo, Zaire (Africa)

Distribution overview: The genus Swartzia is composed of about 135 species, all of which occur in tropical America, except for two which occur in Africa. S. fistuloides occurs in small clusters in the dense rainforests from the Ivory Coast to Gabon and the Congo region.

Common uses: Agricultural implements, Boat building (general), Boxes and crates, Cabinetmaking, Carvings, Chairs, Chests, Concealed parts (Furniture), Core Stock, Decorative veneer, Desks, Dining-room furniture, Dowell pins, Dowells, Drawer sides, Drum sticks, Figured veneer, Fine furniture, Floor lamps, Flooring, Fuelwood, Furniture , Furniture components, Furniture squares or stock, Furniture, Hatracks, Joinery, Kitchen cabinets, Living-room suites, Mine timbers, Musical instruments , Musical instruments, Office furniture, Organ pipes, Piano keys, Pianos , Plain veneer, Plywood, Radio - stereo - TV cabinets, Railroad ties, Rustic furniture, Sounding boards, Sporting Goods, Stools, Tables , Tool handles, Toys, Turnery, Utility furniture, Veneer, Veneer: decorative, Violin bows, Violin, Wardrobes, Woodwork , Xylophones

Product sources: The ITTO reports that timber from this species is produced in limited quantities and exported in small volumes.

Environment profile: Unknown status in natural growth range due to inadequate inofrmation

Tree size: Bole length is 20-30 m

Colors: the heart isYellow, Yellow to golden-yellow to orangeand the sapwoodWhite/Pale brown , Yellow.The grain isWavy to interlocked, the textureMedium to very coarse and the lusterMedium

Natural durability: Very durable, Well suited for exterior applications

Odor: No specific smell or taste

Silica Content: Siliceous

LightInduced Color Change: Darker

Kiln Schedules: Dry at a slow speed

Drying Defects: Slight end splitting, Slight surface checking

Ease of Drying: Fairly Easy

Tree Identification: Bole/stem form is not buttressed

Comments: General finishing qualities are rated as good

Blunting Effect: Moderate

Boring: Wood tends to char during boring

Carving: Generally good results

Cutting Resistance: May overheat saws rapidly

Gluing: Good gluing characteristics

Mortising: Slight to moderate blunting effect on cutters

Moulding: Good finishing

Movement in Service: Good finishing

Nailing: Possible if prebored

Planing: Satisfactory planing qualities

Resistance to Impregnation: Permeable sapwood

Response to hand tools: Poor response

Routing recessing: Routing characteristics are generally good

Sanding: Easy to sand

Veneering qualities: Bolt preparation requires steaming

Screwing: Possible if prebored ; Turning: Poor to Very Poor Results

Polishing: Satisfactory;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity 0,8
Density 913 kg/m3
Bending Strength 1207 1739 kg/cm2
Crushing Strength 705 941 kg/cm2
Hardness 1333 kg
Impact Strength cm
Shearing Strength 223 kg/cm2
Stiffness 152 178 1000 kg/cm2
Tangential Shrinkage 6 %
Radial Shrinkage 4 %
Weight 929 929 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 17175 24736 psi
Density 57 lbs/ft3
Hardness 2940 lbs
Maximum Crushing Strength 10035 13389 psi
Shearing Strength 3185 psi
Stiffness 2167 2537 1000 psi
Specific Gravity 0.8
Weight 58 58 lbs/ft3
Radial Shrinkage 4 %
Tangential Shrinkage 6 %
Volumetric Shrinkage 10 %

Shrinkage, Radial = moderate
Bending strength (MOR) = very high
Shrinkage, Tangential = small
Shrinkage, Radial = small
Max. crushing strength = very high
Density (dry weight) = 61-67 lbs/cu. ft.
Modulus of Elasticity (stiffness) = high
Bending strength (MOR) = high
Shrinkage, Tangential = moderate
Shrinkage, Radial = large
Shearing strength (parallel to grain) = very high
Density (dry weight) = 67-75 lbs/cu. ft.
Density (dry weight) = 53-60 lbs/cu. ft.
Density (dry weight) = 46-52 lbs/cu. ft.
Very heavy
Shrinkage, Tangential = large
Shrinkage, Tangential = fairly large
Shrinkage, Radial = fairly large
Hardness (side grain) = very hard
Density = very high
Compression strength (parallel to grain) = very high
Compression strength (parallel to grain) = medium

Bolza, E., Keating, W.G.,1972,African Timbers - the Properties, Uses and Characteristics of 700 Species,C.S.I.R.O. Div. of Building ResearchChudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.Covington, S.A.,1972,The Strength Properties of Native Timbers used by the Mining Industry in,Zambia,Mining Timbers Project 8:3:3 Report, no.1Erfurth, T., Rusche, H.,1976,The Marketing of Tropical Wood A. Wood Species from African Moist Forests,F.A.O. Forestry DepartmentErfurth, T., Rusche, H.,1976,The Marketing of Tropical Wood B. Wood Species from S. American Tropical,Moist Forests,F.A.O. Forestry DepartmentFreitas, M.C.P.G. de,1961,Madeiras de Angola Series 1,Reprint from Garcia de Orta Lisbon,9(4,pp699-711Hughes, J.F.,1971,The Principal Timber Trees of Cameroon,Unpublished dataIrvine, 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.Keay, R.W.J.1989. Trees of Nigeria.Revised Version of Nigerian Trees. Clarendon Press, Oxford.Keay, R.W.J.,1964,Nigerian Trees Vol.2,Nigeria Federal Department of Forest Research, IbadanKennedy, J.D.,1936,Forest Flora of Southern Nigeria,Government Printer LagosMonterio, R.R., Pimenta de Franca, O.F.,1965,Tres Especies Florestais de Angola,Bol. Inst. Invest. Cientifica de Angola Reprint (Luanda, 2(2,pp209-18Saint-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.TSavill, P.S., Fox, J.E.D.,1967,Trees of Sierra LeoneTakahashi, A.,1978,Compilation of Data on the Mechanical Properties of Foreign Woods (Part,III) Africa,Shimane University, Japan, Research Report on Foreign Wood No. 7WCMC. 1992. Conservation Status Listing - Trees and Timbers of the World, World Conservation Monitoring Centre, Plants Programme, 219 Huntingdon Road, Cambridge, CB3 ODL, United Kingdom.
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