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Black stinkwood
Black stinkwood (Ocotea bullata)

Family: Lauraceae

Common names: Black stinkwood, Cape laurel, Ocotea d'Afrique, Stinkwood, Um nukane

Distributed in: South Africa (Africa)

Common uses: Agricultural implements, Boat building (general), Cabinetmaking, Flooring, Furniture, Joinery, Light construction, Millwork, Moldings, Paneling, Railroad ties, Sporting Goods, Tool handles, Turnery, Vehicle parts, Wheels

Colors: the heart isPale brown, Yellow to golden-yellow to orangeand the sapwoodBrown .The grain isWeak figure, the textureMediumand the lusterPronounced

Natural durability: Susceptible to attack from powder post (Lyctid & Bostrychid) beetles, Susceptible to attack from termites (Isoptera)

Odor: Has an odor

Kiln Schedules: UK=B US=T2C2/T2C1 Fr=2

Drying Defects: Severe collapse and honeycomb, Splitting

Ease of Drying: Reconditioning Treatement

Tree Identification: Bole/stem form is straight

Blunting Effect: Little

Boring: Fairly easy to very easy

Carving: Fairly Easy to Very Easy

Cutting Resistance: Easy to saw

Gluing: Fair to Good Results

Mortising: Fairly Easy to Very Easy

Moulding: Fairly Easy to Very Easy

Movement in Service: Fairly Easy to Very Easy

Nailing: Fairly Easy to Very Easy, Very Good to Excellent

Planing: Poor to Very Poor

Resistance to Impregnation: Resistant sapwood

Response to hand tools: Variable qualities

Sanding: Good sanding finish

Screwing: Fair to Good Results, Very Good to Excellent Results; Turning: Fairly Easy to Very Easy

Polishing: Satisfactory;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 705 kg/m3
Bending Strength 654 1024 kg/cm2
Crushing Strength 275 449 kg/cm2
Hardness 752 kg
Impact Strength cm
Shearing Strength 109 kg/cm2
Stiffness 117 135 1000 kg/cm2
Tangential Shrinkage 7 %
Radial Shrinkage 4 %
Weight 689 544 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 9310 14566 psi
Density 44 lbs/ft3
Hardness 1658 lbs
Maximum Crushing Strength 3916 6397 psi
Shearing Strength 1560 psi
Stiffness 1665 1923 1000 psi
Weight 43 34 lbs/ft3
Radial Shrinkage 4 %
Tangential Shrinkage 7 %
Volumetric Shrinkage 15 %

Max. crushing strength = medium
Bending strength (MOR) = medium
Shearing strength (parallel to grain) = low
Hardness (side grain) = medium
Shrinkage, Tangential = moderate
Shrinkage, Radial = moderate
Modulus of Elasticity (stiffness) = medium
Density (dry weight) = 46-52 lbs/cu. ft.
Shrinkage, Tangential = very small
Shrinkage, Tangential = small
Shrinkage, Tangential = fairly large
Shrinkage, Radial = very small
Shrinkage, Radial = small
Shrinkage, Radial = fairly large
Density (dry weight) = 38-45 lbs/cu. ft.
Shrinkage, Volumetric = large
Shrinkage, Tangential = large
Shrinkage, Radial = large

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]Banks, C.H.,1970,The Durability of South African Wood and Wood Base Building Materials,South African Forestry Journal,No.75Bolza, E., Keating, W.G.,1972,African Timbers - the Properties, Uses and Characteristics of 700 Species,C.S.I.R.O. Div. of Building ResearchChalk, L. et al.,1935,Fifteen South African High Forest Timber Trees,Forest Trees and Timbers of the British Empire, Imperial Forestry,Institute, Oxford,Part 3Kain, D.N.E.,1945,Stinkwood (Ocotea bullata,Wood,10(8,pp202-3Patterson, D.,1988,Commercial Timbers of the World, 5th Edition,Gower Technical PressScott, M.H.,1935,Weights of South African Growth Timbers,South African Department of Agriculture and Forestry Bulletin,No.145,Forest Products Institute, Forestry Series No.1Scott, M.H.,1953,Utilisation Notes on South African Timbers,South African Forestry Department Bulletin No.36Sim, T.R.,1921,Native Trees of South Africa,Union of South Africa Department of Mines and Industries Memoir No.3Spalt, H.A., Stern, W.L.,1959,Survey of Africa Woods 4,Tropical Woods 17(110) pp42-115Streets, R.J.,1962,Exotic Forest Trees in the British Commonwealth,Clarendon Press OxfordTakahashi, A.,1978,Compilation of Data on the Mechanical Properties of Foreign Woods (Part,III) Africa,Shimane University, Japan, Research Report on Foreign Wood No. 7Titmuss, F.H.,1965,Commercial Timbers of the World,Technical Press Ltd., London, 3rd editionWood, B., Calnan, D.,1976,Toxic Woods,British Journal of Dermat 94 Suppl. 13
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