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Adina
Adina (Adina microcephala)

Family: Rubiaceae

Common names: Adina, African teak, Matoemie, Matumi, Mdogowe, Mgwina, Mingerhout, Mugonha, Mugunya, Mulamandia, Muonha, Muonya, Muwana, Muwona, Mwenya, Redwood, Sohihy, Transvaal teak, Watermatoemie, Wild oleander, Yombe

Distributed in: Kenya, Madagascar, Mozambique, South Africa, Sudan, Tanzania, Zambia, Zimbabwe (Africa)

Common uses: Agricultural implements, Bearings & bushings, Boat building (general), Bridge construction, Cabinetmaking, Canoes, Carvings, Flooring, Flooring: commercial heavy traffic, Flooring: industrial heavy traffic, Furniture, Heavy construction, Joinery, Light construction, Lock gates, Marine construction, Mine timbers, Piling, Posts, Railroad ties, Sporting Goods, Toys, Turnery

Tree size: Tree height is 40-50 m

Colors: the heart isPurple, Yellow to golden-yellow to orangeand the sapwoodPinkish, Same as heartwood.The grain isStraight, the textureMedium

Natural durability: Susceptible to insect attack, Very durable

Kiln Schedules: UK=C US=T3C2/T3C1 Fr=3

Kiln Drying Rate: Slow (18-28 days for boards < 32 mm, to 52-84 days for boards >= 63 mm)

Drying Defects: Slight twist/warp, Splitting

Ease of Drying: Slowly

Tree Identification: Bole/stem form is straight

Comments: General finishing qualities are rated as good

Boring: Fairly easy to very easy

Cutting Resistance: Moderate to saw

Gluing: Gluing is often difficult

Mortising: Fairly Easy to Very Easy

Moulding: Very Good to Excellent

Movement in Service: Very Good to Excellent

Nailing: Holds nails well, Very Good to Excellent

Planing: Planes well, to a good finish

Resistance to Impregnation: Resistant sapwood

Response to hand tools: Moderate working qualities

Screwing: Screwing yields good results ; Turning: Good results

Polishing: Very Good to Excellent;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 881 kg/m3
Bending Strength 704 1098 kg/cm2
Crushing Strength 485 699 kg/cm2
Hardness 752 kg
Impact Strength cm
Shearing Strength 127 kg/cm2
Stiffness 117 135 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage 3 %
Weight 865 705 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 10021 15630 psi
Density 55 lbs/ft3
Hardness 1658 lbs
Maximum Crushing Strength 6899 9945 psi
Shearing Strength 1818 psi
Stiffness 1665 1923 1000 psi
Weight 54 44 lbs/ft3
Radial Shrinkage 3 %
Tangential Shrinkage 6 %

Density (dry weight) = 53-60 lbs/cu. ft 0
Bending strength (MOR) = medium
Shrinkage, Radial = small
Modulus of Elasticity (stiffness) = medium
Density (dry weight) = 61-67 lbs/cu. ft
Shrinkage, Tangential = small
Shrinkage, Radial = very small
Max. crushing strength = low
Shrinkage, Tangential = very small
Shrinkage, Tangential = moderate
Shrinkage, Tangential = fairly large
Max. crushing strength = medium
Density (dry weight) = 46-52 lbs/cu. ft.
Hardness (side grain) = medium
Bending strength (MOR) = high

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.48Bolza, E., Keating, W.G.,1972,African Timbers - the Properties, Uses and Characteristics of 700 Species,C.S.I.R.O. Div. of Building ResearchGueneau, P., Gueneau, D.,1969,Proprietes Physiques et Mecaniques des Bois Malagaches,CTFT MadagascarPalgrave, K.C.,1977,Trees of Southern Africa,Cape Town South AfricaPardy, A.A.,1955,Notes on Indigenous Trees and Shrubs of S. Rhodesia - Adina microcephala,Ministry of Agriculture and Lands S. Rhodesia Bulletin No.1812Scott, M.H.,1950,Notes on the more Important African Timbers Imported into the Union with,Special Ref. to Port. E.A. Species,Journal of the South African Forestry Association,No.19,pp18-62,[South,African Forestry Journal]Scott, M.H.,1953,Utilisation Notes on South African Timbers,South African Forestry Department Bulletin No.36Takahashi, A.,1978,Compilation of Data on the Mechanical Properties of Foreign Woods (Part,III) Africa,Shimane University, Japan, Research Report on Foreign Wood No. 7Tanzania Forest Division,1966,Kiln Drying Schedules for Tanzania Timbers Technical Note no.38,Tanzania Forest Div. Util. Sec. MoshiTanzania Forestry Department,1966,Timbers of Tanganyika - Adina microcephala (mgwina, mdogowe,Tanzanian Forestry Department Utilisation Section, Moshi - Timbers of,TanganyikaZambia Forest Department,1979,Timbers of Zambia Adina microcephala and Amblygonocarpus andongensis,Zambia Forest Department, Division of Forest Products Research, Timbers of,Zambia Technical Note no.5/79
*Come interpretare i dati (manleva su eventuali imprecisioni)