Wood inspector

Sei in: home » database dei legni
  • Decrease font size
  • Default character size
  • Encrease font size


Fornitori

Ditta 5
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

Sito web: www.pippo.it
E-mail: 

Ditta 4
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

Sito web: www.pippo.it
E-mail: 

Ditta 3
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

Sito web: www.pippo.it
E-mail: 

Ditta 2
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

Sito web: www.pippo.it
E-mail: 

Ditta 1
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

Sito web: www.pippo.it
E-mail: 

Ditta 0
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

Sito web: www.pippo.it
E-mail: 

Contatti

database dei legni


Ask informationsPrint pageSend to a friend
Lokundu
Lokundu (Newtonia buchananii)

Family: Leguminosae

Common names: Acacia, Chikwani, East African newtonia, Forest newtonia, Lokundu, Lupewere, Mafamuti, Makuruma, Mkufi, Mkwerenyani, Mnyassa, Mofu, Mpehere, Mpewere, Mruga, Mseri, Mshashita, Muchenche, Mufomoti, Mujairaya, Mujerairo, Mukoi, Mukui, Mukunga, Mutole, Mutoyo, Mwosi, N'singa, Newtonia, Nkwerenyani, Omukungu, Pehere, Singa-singa, Umukerekwa

Distributed in: Angola, Cameroon, Kenya, Malawi, Mozambique, Rwanda, South Africa, Tanzania, Uganda, Zaire, Zambia, Zimbabwe (Africa)

Distribution overview: The species occurs in Central and East Africa.

Common uses: Bedroom suites, Boat building (general), Boat building, Boxes and crates, Broom handles, Building materials, Cabinetmaking, Canoes, Carvings, Casks, Chairs, Chests, Concealed parts (Furniture), Core Stock, Decorative veneer, Desks, Dining-room furniture, Domestic flooring, Dowell pins, Dowells, Drawer sides, Excelsior, Factory flooring, Figured veneer, Fine furniture, Floor lamps, Flooring, Furniture , Furniture components, Furniture squares or stock, Furniture, Hatracks, Heavy construction, Interior construction, Interior trim, Joinery, Kitchen cabinets, Lifeboats, Light construction, Living-room suites, Millwork, Moldings, Office furniture, Packing cases, Paneling, Parquet flooring, Plywood, Railroad ties, Shipbuilding, Tables, Toys, Turnery, Vehicle parts, Veneer, Wheel spokes, Wheels

Environment profile: Data source is World Conservation Monitoring Center Vulnerable in Uganda

Colors: the heart isReddish brown, Yellow to golden-yellow to orangeand the sapwoodWhite to yellow, Whitish.The grain isStripe (figure), the textureMedium coarse to coarseand the lusterSlightly lustrous

Natural durability: Susceptible to marine borer attack, Susceptible to pinhole borers

Odor: No specific smell or taste

LightInduced Color Change: Darker

Kiln Schedules: UK=J US=T10D5S/T8D4S Fr=4

Kiln Drying Rate: Rapid (<10 days for boards < 32 mm, to <30 days for boards >= 63 mm)

Drying Defects: Slight surface checking, Slight twist/warp

Ease of Drying: Easy

Tree Identification: Bole/stem form is straight

Comments: General finishing qualities are rated as good Soft to moderately hard Timber properties vary depending upon the origin

Blunting Effect: Medium dulling effect on cutting edges

Boring: Difficult

Carving: Good results

Cutting Resistance: Low cutting resistance

Gluing: Easy to glue

Mortising: Finishes poorly

Moulding: Easy to mould

Movement in Service: Easy to mould

Nailing: Possible if prebored, Pre-boring recommended

Planing: Special attention required

Resistance to Impregnation: Sapwood is moderately resistant

Response to hand tools: Responds well to hand tools

Sanding: Good sanding finish

Veneering qualities: Easy to cut, There is slight to moderate drying degrade and the potential for buckles and splits

Steam bending: Poor

Turning: Fairly easy turning, boring, mortising and other machining operations

Polishing: Satisfactory; Staining: Finish is generally satisfactory ; Varnishing: Good;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity 0,43 0,62
Density 560 kg/m3
Bending Strength 633 978 kg/cm2
Crushing Strength 79 kg/cm2
Hardness 499 kg
Impact Strength 63 71 cm
Shearing Strength 114 kg/cm2
Stiffness 96 122 1000 kg/cm2
Tangential Shrinkage 5 %
Radial Shrinkage 2 %
Weight 544 544 kg/m3
Maximum Load 0,63 0,84 cm-kg/cm3
Toughness 369 cm-kg
Static Bending 640 kg/cm2
Item Green Dry English
Bending Strength 9016 13917 psi
Crushing Strength 1137 psi
Density 35 lbs/ft3
Hardness 1102 lbs
Impact Strength 25 28 inches
Maximum Crushing Strength 4283 7019 psi
Shearing Strength 1627 psi
Static Bending 9104 psi
Stiffness 1371 1740 1000 psi
Toughness 321 inch-lbs
Work to Maximum Load 9 12 inch-lbs/in3
Specific Gravity 0.43 0.62
Weight 34 34 lbs/ft3
Radial Shrinkage 2 %
Tangential Shrinkage 5 %
Volumetric Shrinkage 8 %

Max. crushing strength = medium 0
Hardness (side grain) = soft 0
Bending strength (MOR) = medium 0
Shearing strength (parallel to grain) = low 0
Modulus of Elasticity (stiffness) = low 0
Density (dry weight) = 31-37 lbs/cu. ft. 1
Shrinkage, Radial = very small 0
Shrinkage, Tangential = very small
Toughness-Hammer drop (Impact Strength) = low
Bending strength (MOR) = low
Shrinkage, Tangential = small
Modulus of Elasticity (stiffness) = very low
Shrinkage, Radial = small
Shearing strength (parallel to grain) = very low
Density (dry weight) = 38-45 lbs/cu. ft.
Shearing strength (parallel to grain) = medium
Modulus of Elasticity (stiffness) = medium
Weight = medium
Very dense
Shrinkage, Volumetric = small
Shrinkage, Tangential = moderate
Resists denting and marring
Density (dry weight) = 46-52 lbs/cu. ft.
Density (dry weight) = 23-30 lbs/cu. ft.
Compression strength (parallel to grain) = high
Bending strength (MOR) = high
The species has high bending strength in the air-dry condition (about 12 percent moisture content). It compares favorably with Teak, which also has high bending strength. Strength in compression parallel to grain is in the high range. Other species in this range include Teak, White oak, and Hard maple

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]Bois, P.J.,1966,The Strength Properties of Tanzania Timbers,Tanzania Forest Div. Util. Sec. Moshi Tech. Note, No.35Bolza, E., Keating, W.G.,1972,African Timbers - the Properties, Uses and Characteristics of 700 Species,C.S.I.R.O. Div. of Building ResearchBryce, J.M.,1967,Commercial Timbers of Tanzania,Tanzanian Forestry Division Util. Sec. MoshiChalk, L., et al,1932,Some East African Coniferae and Leguminosae,Forest Trees and Timbers of the British Empire,Part 1Eggeling, W.J.,1940,Indigenous Trees of Uganda,Govt. Printer Entebbe UgandaErfurth, T., Rusche, H.,1976,The Marketing of Tropical Wood A. Wood Species from African Moist Forests,F.A.O. Forestry DepartmentForest Products Research Laboratory, U.K.,1969,The Movement of Timbers,Forest Products Research Laboratory, Princes Risborough Technical Note,No.38France - C.T.F.T./C.T.B.,1982,Guide pour le Choix des Essences Deroulables-pour la fabrication du,contreplaque,C.T.F.T./C.T.B. FranceFreitas, M.C.P.G. de,1961,Madeiras de Angola Series 1,Reprint from Garcia de Orta Lisbon,9(4,pp699-711Goldsmith, B., Carter, D.T.,1981,The Indigenous Timbers of Zimbabwe,Forestry Commission, Zimbabwe Research Bulletin No.9Grant, D.K.S.,1934,Some Local Timbers,Tanzania Forest DepartmentHoward, A.L.,1948,A Manual of Timbers of the World.,Macmillan & Co. Ltd. London 3rd ed.I.U.F.R.O.,1973,Veneer Species of the World,Assembled at F.P.L. Madison on behalf of I.U.F.R.O. Working Party on,Slicing and Veneer CuttingLavers, G.M. 1966. The Strength Properties of Timbers. Forest Products Research Bulletin, No. 50. Ministry of Technology, Her Majesty's Stationery Office, London.Lavers, G.M.,1983,The Strength Properties of Timber (3rd ed. revised Moore G.L.,Forest Products Research Laboratory, Princes Risborough, Building Research,Establishment Report (formerly Bulletin No.50)Murira, K.,1984,Natural Durability Tests of Tanzanian Timbers 1955 - 1982,Tanzania Forestry Research Institute, Timber Utilisation Research Centre,,Moshi.Patterson, D.N.,1963,The strength of Kenya timbers, their derivation and application,Kenya Forestry Department Research Bulletin,No.23Scott, 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]Tack, C.H.,1969,Uganda Timbers,Govt. Printer UgandaTakahashi, 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 - Timber Marketing Co. Ltd.,1978,Timber from TanzaniaTanzania Forest Department,1960,The Natural Durability of Local Timbers,Tanzanian Forest Dept. Tech. Note,No.14Tanzania Forest Department,1962,Newtonia buchananii (newtonia/mkufi/mnyassa,Tanzania Forest Div. Util. Sec. Moshi - Timbers of TanganyikaTanzania Forest Division,1966,Kiln Drying Schedules for Tanzania Timbers Technical Note no.38,Tanzania Forest Div. Util. Sec. MoshiTimber Information Assoc. Ltd.,1947,Notes on East African Timbers,TRADA, Timber Information, No.28Uganda Forest Department,1954,Dahoma,Uganda Forestry Department Timber Leaflet, No.8Uganda Forest Department,1954,The Mechanical Properties of some Ugandan Timbers,Uganda Forest Department Timber Leaflet,No.1Uganda Forest Department,1956,Muchenche - Newtonia buchananii,Uganda Forestry Department Timber Leaflet No.27Uganda Forest Department,1969,The Shrinkage of Some Ugandan Timbers,Uganda Forestry Department Timber Leaflet,No.47Wimbush, S.H.,1950,Catalogue of Kenya Timbers,Govt. Printer Nairobi Kenya
*Come interpretare i dati (manleva su eventuali imprecisioni)