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Ditta 5
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Mbagazembe
Mbagazembe (Newtonia paucijuga)

Family: Leguminosae

Common names: Mbagazembe, Mbonta, Mche, Mdadalika, Mdadarika, Miovu, Mkunguni, Mlemereza, Mnombi

Distributed in: Kenya, Tanzania (Africa)

Common uses: Boxes and crates, Flooring: industrial heavy traffic, Furniture, Heavy construction, Joinery, Light construction, Particleboard, Piling, Plywood corestock, Plywood, Pulp/Paper products, Railroad ties, Toys, Turnery

Environment profile: Abundant/Secure

Tree size: Trunk diameter is 100-150 cm

Colors: the heart isWhite, Yellowand the sapwoodWhite to yellow, Yellow.The grain isWavy, the textureFine to mediumand the lusterLustrous

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

Odor: Has an odor

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 twist/warp, Uneven Moisture Content

Ease of Drying: Thick Stock Requires Care

Tree Identification: Bole/stem form is straight

Blunting Effect: Moderate

Boring: Fairly easy to very easy

Cutting Resistance: Easy to saw

Gluing: Poor to Very Poor Results

Mortising: Very Good to Excellent

Moulding: Very Good to Excellent

Movement in Service: Very Good to Excellent

Nailing: Possible if prebored, Pre-Boring Recommended

Planing: Planes to a poor finish

Resistance to Impregnation: Permeable sapwood

Resistance to Splitting: Poor

Response to hand tools: Fairly Difficult to Difficult to Work

Sanding: Poor to Very Poor Results

Veneering qualities: Veneers easily, Veneers moderately easy

Steam bending: Poor to Very Poor Results

Screwing: Pre-boring recommended ; Turning: Good results

Painting: Very Good to Excellent; Polishing: Fair to Good; Staining: Very Good to Excellent; Varnishing: Very Good to Excellent;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 673 kg/m3
Bending Strength 654 1024 kg/cm2
Crushing Strength 380 574 kg/cm2
Hardness 601 kg
Impact Strength cm
Shearing Strength 160 kg/cm2
Stiffness 106 122 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage 2 %
Weight 657 528 kg/m3
Maximum Load 0,63 0,84 cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 9310 14566 psi
Density 42 lbs/ft3
Hardness 1326 lbs
Maximum Crushing Strength 5408 8171 psi
Shearing Strength 2284 psi
Stiffness 1512 1745 1000 psi
Work to Maximum Load 9 12 inch-lbs/in3
Weight 41 33 lbs/ft3
Radial Shrinkage 2 %
Tangential Shrinkage 4 %

Bending strength (MOR) = medium
Shrinkage, Tangential = very small
Shrinkage, Radial = very small
Shearing strength (parallel to grain) = medium
Density (dry weight) = 46-52 lbs/cu. ft.
Max. crushing strength = medium
Max. crushing strength = high
Modulus of Elasticity (stiffness) = medium
Modulus of Elasticity (stiffness) = low
Density (dry weight) = 38-45 lbs/cu. ft.
Work to Maximum Load = low
Shearing strength (parallel to grain) = high
Hardness (side grain) = soft
Hardness (side grain) = medium
Shrinkage, Tangential = small
Shrinkage, Radial = small
Shearing strength (parallel to grain) = low
Density (dry weight) = 23-30 lbs/cu. ft.

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 ResearchDale, I.R., Greenway, P.J.,1961,Kenya Trees and Shrubs,Buchanans Kenya Estates Ltd. Nairobi Hatchards LondonMurira, K.,1984,Natural Durability Tests of Tanzanian Timbers 1955 - 1982,Tanzania Forestry Research Institute, Timber Utilisation Research Centre,,Moshi.Takahashi, 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 Forest Division,1967,The Weights and Shrinkage of some Local Timbers,Tanzania Forest Div. Util. Sect. Technical Note,No.25Tanzania Forestry Department,1966,Timbers of Tanganyika - Newtonia paucijuga,Tanzania Forestry Department, Utilisation Section, Moshi - Timbers of,TanganyikaWimbush, S.H.,1950,Catalogue of Kenya Timbers,Govt. Printer Nairobi Kenya
*Come interpretare i dati (manleva su eventuali imprecisioni)