MAFAMUTI (Newtonia buchananii)
Trade Name
Mafamuti
Scientific Name
Newtonia buchananii Gilbert et Boutique
Family
LEGUMINOSAE
Common Names
Lokundu (Zaire); Umukerekwa (Burundi); Mpewere (Uganda); East African Newtonia (Uganda); Mkufi (Tanzania); East African Newtonia (Tanzania); East African Newtonia (Kenya); East African Newtonia (Ethiopia); Mafamuti (Mozambique); Singa-singa; Pehere; Omukungu; Nkwerenyani; Newtonia; N`singa; Mwosi; Mutoyo; Mutole; Mukunga; Mukui; Mukoi; Mujerairo; Mujairaya; Mufomoti; Muchenche; Mshashita; Mseri; Mruga; Mpewere; Mpehere; Mofu; Mnyassa; Mkwerenyani; Mkufi; Makuruma; Mafamuti; Lupewere; Lokundu; Forest newtonia; Chikwani; Acacia
Scientific Name Synonyms
Piptadenia buchananii Bak. f.
Description Of The Tree
Botanical Description
The tree reaches a height of 40 m. The bole is cylindrical, straight and up to 20 m in length. Felling shakes can occur. Buttresses may be up to 4 m. The trunk diameter attains 100 cm over the short buttresses.
Natural Habitat
Newtonia buchananii is common in mountain forests up to 2,000 m, as well as in riverine and swamp forests.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 150 to 200 micras (medium). Vestured pits. Vessels per mm2 less than 6 (rare). Simple perforation plates. Vessel-ray pits similar to intervessel pits Paratracheal axial parenchyma scanty and/or vasicentric. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. 5 to 8 cells per parenchyma strand. 4 to 10 rays per mm (medium). Rays non-storied. Rays 1 to 2 seriate. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Occasionally septate fibers present. Fibers with simple to minutely bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Color
The sapwood is grey-white, it has a thickness of 5 cm. The heartwood is brown, darkening on exposure to golden brown, it is clearly demarcated.
Grain
Straight or slightly interlocked, sometimes with an influence on further processing operations.
Texture
This species is usually reported to have a fine texture.
Luster
This wood is commonly of low luster.
Natural Durability
Not durable; important risks of decay attacks at any processing step, from logs up to final products. It must receive preservative treatment. Sensible to termites attack. The heartwood is sensible to Lyctus attacks.
Natural durability index (1= Very high durability, 7=Vey low durability)
5
Internal Growth Stresses
Residual stresses present in the wood may cause defects while processing the timber.
Resistance To Impregnation
Nearly impossible to treat with a too much low penetration of the preservative substances.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.45
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.49
Total shrinkage Tangential (Saturated to 0%MC) (%)
6.0
Total shrinkage Radial (Saturated to 0%MC) (%)
3.5
Drying Defects
Ease of Drying: Drying is moderately difficult to difficult; special care is systematically needed. Drying Defects: Risks of checks and distortions. Kiln Schedules: Schedule proposed as a reference by comparison with well known species taking into account to the general technological behavior of this species.
Recommended Dry Kiln Schedule
FR-10
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
1.7
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
714
Stiffness (MOE) 12%MC (kgf/cm²)
96718
Compression parallel to fiber 12%MC (kgf/cm²)
406
Compression perpendicular to fiber 12%MC (kgf/cm²)
47
Shear strength radial 12%MC (kgf/cm²)
42
Janka hardness (side) 12%MC (kgf)
293
Janka hardness (end grain) 12%MC (kgf)
394
Workability
Sawing
Sawing of this species is easy to moderately easy.
Rotary Veneer Cutting
Suitable for peeling if treated.
Sliced Veneer
Suitable for peeling if treated.
Blunting Effect
Slight blunting effect; ordinary tools can be used for sawing and machining.
Machining
Machining of this species is reportedly easy.
Planing
Moderately easy; tools must be cautiously sharpened.
Moulding
Easy; no particular problems.
Boring
Easy; no particular problems.
Mortising
Easy; no particular problems.
Nailing
Pre-boring is necessary.
Gluing
Glues well if basic gluing technical rules are followed.
Sanding
Easy to perform; it gives good results.
Polishing
Can be polished without surface preparation.
Response To Hand Tools
No particular problems.
REFERENCED USES
End Uses Summary
HOUSING GENERAL, parquet, fittings, FURNITURE AND CABINETS, cabinets, PLYWOOD AND VENEER, SPORTS, TOOLS, tool handles, agricultural tools, CONTAINERS, truck bodies, truck flooring, OTHER AND MUSICAL INSTRUMENTS, handicrafts, scale model
General Housing
- 10 - Silica in Timbers
Parquet
- 15 - Empire Timbers
Fittings
- 19 - Silica in Timbers
Furniture Cabinets
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Cabinet
- 24 - Empire Timbers
Panels, Veneers
- 25 - Directory of Timber Trade Malaysia
Sports
- 38 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
Tools
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Tool Handles
- 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
Agricultural Tools
- 44 - Atlas of Peruvian Woods
Truck Body
- 53 - Timbers of the New World
Truck Flooring
- 54 - Bulletin of the Government Forest Experiment Station N.157: Identification of Tropical Woods
Handcraft
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Scale Models
- 83 - Algunas caracteristicas fisicomecanicas de la madera de tres especies de la cordillera NeoVolcanica
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