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Baborochi borun
Baborochi borun (Isoberlinia tomentosa)

Family: Caesalpiniaceae

Common names: Baborochi borun, Berlinia, Fara doka, Fara-doka, Gyagya buhi, Kangkalaga, Kankpalaga, Kapane, Kpalso-pailga, Msanganza, Mutobo, Mutondo, Palisaka, Palsonyao

Distributed in: Angola, Cameroon, Central African Republic, Congo, Ghana, Malawi, Nigeria, South Africa, Sudan, Tanzania, Zaire, Zambia, Zimbabwe (Africa)

Common uses: Cabinetmaking, Flooring, Flooring: commercial heavy traffic, Fuelwood, Furniture, Heavy construction, Joinery, Mine timbers, Posts, Railroad ties, Vehicle parts

Environment profile: Vulnerable

Tree size: Trunk diameter is 200-250 cm

Colors: the heart isRed, Yellowand the sapwoodWhite to yellow, Yellow.The grain isWavy, the textureFine

Natural durability: Susceptible to marine borer attack, Very durable

Odor: Has a taste

Kiln Schedules: Drying (speed) is fast

Kiln Drying Rate: Rapid

Drying Defects: Moderate surface checking, Splitting

Ease of Drying: Slowly

Tree Identification: Bole/stem form is buttressed

Comments: General finishing qualities are rated as satisfactory

Blunting Effect: Little

Boring: Fairly easy to very easy

Carving: Fairly Difficult to Very Difficult

Cutting Resistance: Easy to saw

Gluing: Very Good to Excellent Results

Mortising: Poor to Very Poor

Moulding: Fairly Easy to Very Easy

Movement in Service: Fairly Easy to Very Easy

Nailing: Poor to Very Poor , Pre-Boring Recommended

Planing: Planes well, to a good finish

Resistance to Impregnation: Resistant sapwood

Response to hand tools: Responds Readily

Routing recessing: Fairly Difficult to Very Difficult

Screwing: Fairly Difficult to Very Difficult, Pre-boring recommended; Turning: Fairly Difficult to Very Difficult

Polishing: Very Good to Excellent; Staining: Very Good to Excellent;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 769 kg/m3
Bending Strength 617 965 kg/cm2
Crushing Strength 415 616 kg/cm2
Hardness 931 kg
Impact Strength 86 cm
Shearing Strength 124 kg/cm2
Stiffness 105 122 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage 3 %
Weight 753 608 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 8777 13736 psi
Density 48 lbs/ft3
Hardness 2054 lbs
Impact Strength 34 inches
Maximum Crushing Strength 5905 8762 psi
Shearing Strength 1775 psi
Stiffness 1506 1747 1000 psi
Weight 47 38 lbs/ft3
Radial Shrinkage 3 %
Tangential Shrinkage 6 %

Shearing strength (parallel to grain) = low
Density (dry weight) = 46-52 lbs/cu. ft.
Bending strength (MOR) = medium
Max. crushing strength = high
Hardness (side grain) = hard
Shrinkage, Tangential = very small
Shrinkage, Tangential = small
Shrinkage, Tangential = moderate
Shrinkage, Radial = very small
Shrinkage, Radial = small
Modulus of Elasticity (stiffness) = very low
Modulus of Elasticity (stiffness) = medium
Max. crushing strength = medium
Hardness (side grain) = medium
Toughness-Hammer drop (Impact Strength) = medium
Toughness-Hammer drop (Impact Strength) = low
Shrinkage, Tangential = fairly large
Shrinkage, Radial = moderate
Shrinkage, Radial = fairly large
Shearing strength (parallel to grain) = high
Modulus of Elasticity (stiffness) = high
Density (dry weight) = 53 - 60 lbs/cu. ft.
Bending strength (MOR) = low

Banks, C.H. and J.P. Schoeman. 1963. Railway Sleeper and Crossing Timbers. Bulletin No. 41, Republic of South Africa. The Government Printer, Pretoria, South Africa.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.48Banks, C.H.,1954,The Mechanical Properties of Timbers with Particular Reference to those,grown in the Union of South Africa,Journal of the South African Forestry Association,No. 24 pp.44-65,[South,African Forestry Journal]Bolza, E., Keating, W.G.,1972,African Timbers - the Properties, Uses and Characteristics of 700 Species,C.S.I.R.O. Div. of Building ResearchBrenan, J.P.M., Greenway, P.J.,1949,Check-lists of the Forest Trees and Shrubs of the British Empire,Imperial Forestry Institute, Oxford No.5 Tanganyika Territories Part 2Eggeling, W.J.,1940,Indigenous Trees of Uganda,Govt. Printer Entebbe UgandaFanshawe, D.B.,1962,Fifty Common Trees of Northern Rhodesia,Natural Resources Board and Forestry Department, NdolaIrvine, F.R.,1961,Woody Plants of Ghana,O.U.P. LondonKeay, R.W.J.,1964,Nigerian Trees Vol.2,Nigeria Federal Department of Forest Research, IbadanNigeria Department of Forest Research,1967,The Properties of Some Savanna Timber Trees,Nigeria Federal Department of Forest Research, Ibadan Report, No.11Storrs, A.E.G.,1979,Know your Trees - Some of the Common Trees found in Zambia,Zambia Forestry Department, NdolaTakahashi, A.,1978,Compilation of Data on the Mechanical Properties of Foreign Woods (Part,III) Africa,Shimane University, Japan, Research Report on Foreign Wood No. 7White, F.,1962,Forest Flora of Northern Rhodesia,O.U.P. London
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