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PROSOPIS (Prosopis africana)
Nom commercial
Prosopis
Nom scientifique (avec auteur)
Prosopis africana Taub.
Famille
LEGUMINOSAE
Noms communs (pays)
Ken (Senegal); Ir (Senegal); Pau carvao (Guinea-Bissau); Guele (Guinea); Sama-nere (Burkina Faso); Pau carvao (Equatorial Guinea); Zingili; Zamturi; Yoruba charcoal wood; Yan; Ubwa; Sanga; Sanchi lati; Pung-un-nung; Prekese; Pau carvao; Pato; Pangi; Nazari; Nanzili; Langjina; Langbung; Langbina; Kpaye; Kpanena; Kokara; Kohi; Kirya; Kiriya; Kaki; Ir; Guele; Dwadata; Akwiye; Akiye; Akaka; Abusurung
Synonymes du nom scientifique (avec auteurs)
Prosopis oblonga Benth.; Prosopis lanceolata Benth.; Coulteria africana Guill. & Perr.
DESCRIPTION DE L'ARBRE
Description botanique
The tree reaches a height of 20 to 30 m, with trunk diameters from 70 to 100 cm. The bole is slightly buttressed, often crooked and low-branched.
Habitat naturel
Prosopis africana is common in savanna regions.
IDENTIFICATION DU BOIS
Description anatomique du bois
Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 200 micras or more (large). Brown-colored deposits in heartwood vessels. Vestured pits. Vessels per mm2 less than 6 (rare). Simple perforation plates Occasionally axial parenchyma in marginal or in seemingly marginal bands. Paratracheal axial parenchyma scanty and/or vasicentric. Non-crystals in axial parenchyma cells. 3 to 4 cells per parenchyma strand. 4 to 10 rays per mm (medium). Rays 1 to 4 seriate. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Non-septate fibers. Fibers with simple to minutely bordered pits.
Disponibilité
Statut CITES
Unrestricted
DESCRIPTION GÉNÉRALE DU BOIS
Odeur
Fragrant odor.
Teinte
The sapwood is pale yellow or white brown. The heartwood is dull yellow-brown to rich dark red-brown. after drying, heartwood acquires a dark wine-red tint, it is clearly demarcated.
Grain
Straight or highly interlocked, sometimes with an influence on further processing operations.
Texture
Texture is reported to be fine to medium.
Luster
The wood luster is reported to be rather low.
Durabilité naturelle
Very durable to decay; without preservative treatment. This species is especially suited for all the uses with risks of permanent or long-lasting humidification. Resistant to termites attack. Heartwood is resistant to Lyctus attacks.
Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)
1
Teneur en silice
Silica Content: Silica content is negligible. Amounts over 0.05% may affect wood processing. Silica Value: 0
Résistance à l'imprégnation
Nearly impossible to treat with a too much low penetration of the preservative substances.
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.90
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
1.05
Défauts dus au séchage
Ease of Drying: Drying is slow but without difficulties. Drying Defects: Risks of checks.
PROPRIÉTÉS CHIMIQUES DU BOIS
PROPRIÉTÉS MÉCANIQUES DU BOIS
Résistance à la flexion (module de rupture_MOR) 12%TH (kgf/cm²)
1152
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
795
Résistance à la compression perpendiculaire à la fibre 12%TH (kgf/cm²)
115
Dureté Janka (latérale) 12%TH (kgf)
1394
Dureté Janka (extrémités) 12%TH (kgf)
1362
OUVRABILITÉ
Sciage
Sawing of this species requires powerful equipment.
Coupe de placage de déroulage
Not suitable for veneering.
Placage tranche
Not suitable for veneering.
Effet d'émoussement
Moderate blunting effect; stellited blades for sawing and carbide tools for machining are advised.
Usinage
It needs powerful tools for processing. Possible difficulties caused by interlocked grain are reported. It is recommended to use special tools for cutting.
Rabotage
Moderately easy; tools must be cautiously sharpened.
Moulurage
Easy; no particular problems.
Perçage
Easy; no particular problems.
Mortaisage
Easy; no particular problems.
Clouage
Pre-boring is necessary.
Collage
Difficult to glue because of high density.
Ponçage
Difficult to obtain very good results because of interlocked grain.
Polissage
Can be polished without surface preparation.
Compatibilité avec outils manuels
Working with hand tools is difficult.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
EXTERIOR GENERAL, poles, stakes posts, crossties, HOUSING GENERAL, parquet, FURNITURE AND CABINETS, cabinets, SPORTS, TOOLS, tool handles, agricultural tools, PACKING, CONTAINERS, cooperage, truck bodies, truck flooring, NAVAL CONSTRUCTION, boats, OTHER AND MUSICAL INSTRUMENTS, handicrafts
EXTERIOR GENERAL
- 1 - Tabela de resultados de ensaios fisicos e mecanicos
Poteaux
- 3 - Estudo dendrologico e determinacao das caracteristicas fisicas e mecanicas do genipapo (Genipa americana)
Piquets
- 5 - Propriedades fisicas e mecanicas da madeira e do contraplacado de Pinus elliottii
Traverses de chemin de fer
- 8 - Maderas latinoamericas. III, Podocarpus standleyi ,Podocarpus oleifolius, Drims granadensis, Magnolia poasana y Didymopanax pittieri
MEUBLES ET M. DE RANGEMENT
- 10 - Silica in Timbers
Parquets
- 15 - Empire Timbers
MEUBLES ET M. DE RANGEMENT
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Armoires
- 24 - Empire Timbers
SPORTS
- 38 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
OUTILS
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Outils_manches
- 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
Outils_agric
- 44 - Atlas of Peruvian Woods
EMBALLAGE
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
CONTENANTS
- 50 - Properties of imported tropical woods
Tonnellerie
- 51 - Recopilacion de propiedades mecanicas de maderas creciendo en Chile
Carros_camion
- 53 - Timbers of the New World
Wagons
- 54 - Bulletin of the Government Forest Experiment Station N.157: Identification of Tropical Woods
CONSTRUCTION NAVALE
- 55 - Tropical Timber Atlas of Latin America
Navires
- 56 - Manual de Identificación de Especies Forestales de la Subregión Andina.
AUTRES ET INSTRUMENTS DE MUSIQUE
- 63 - Madeiras do Brazil II
Artisanat
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
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