PAO ROSA, PAU FERRO (Swartzia fistuloides)
Nom commercial
Pao rosa, Pau ferro
Nom scientifique (avec auteur)
Swartzia fistuloides Harms
Famille
LEGUMINOSAE
Noms communs (pays)
Boto (Côte d`Ivoire); N'guessa (Central African Republic); Pau ferro (Mozambique); Pau ferro Pau ferrro (Mozambique); Nsakala (Zaire); Kisasamba (Congo); N`guessa (Central African Republic); Oken (Gabon); Kiela kusu (Zimbabwe); Kiela kusu (Congo); Awong (Gabon); Ndina (Gabon); Pao Rosa
Synonymes du nom scientifique (avec auteurs)
Bobgunnia fistuloides (Harms) J.H. Kirkbr. & Wieresma; Bobgunnia fistuloides (Harms) J.H. Kirkbr. & Wiers
DESCRIPTION DE L'ARBRE
Description botanique
The tree reaches a height of 23 to 30 m. The bole is irregular, short, sometimes with a swollen base. The trunk diameter attains 70 to 100 cm.
Habitat naturel
Swartzia fistuloides is found in the dense rain forests, in small groups. It is known or inferred that unless the species is subject to strict regulation, it will meet AT LEAST ONE of the Appendix I criteria in the near future.It is known or inferred that
Répartition naturelle
From Cote d`Ivoire to Gabon and to the Democratic Republic of the Congo.
IDENTIFICATION DU BOIS
Description anatomique du bois
Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 150 to 200 micras (medium). Vestured pits. Vessels per mm2 10 to 20 (abundant). Simple perforation plates. Vessel-ray pits similar to intervessel pit Axial parenchyma in marginal or in seemingly marginal bands. Axial parenchyma confluent. Axial parenchyma in discontinuous tangential lines. Axial parenchyma storied. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. Two cells per parenc Rays more than 10 per mm (abundant). Rays storied. 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.
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Vue macroscopique du bois (plan radiale)
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Vue microscopique d'une section transversale du bois
Disponibilité
Statut CITES
Unrestricted
DESCRIPTION GÉNÉRALE DU BOIS
Teinte
The sapwood is yellowish white, it has a thickness of 5 cm. The heartwood is pink brown, striped with red brown bands, it is clearly demarcated.
Index de Teinte (1 = Noir, 7 = Jaune clair)
4
Grain
The grain is slightly but systematically interlocked.
Texture
Texture is reported to be fine to medium.
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
Tensions internes de croissance
No residual growth stresses are found.
Résistance à l'imprégnation
Difficult to treat with only a low penetration of the preservative products.
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.88
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
1.02
Défauts dus au séchage
Ease of Drying: Drying is moderately difficult to difficult; special care is systematically needed. Drying Defects: Risks of distortions. and collapse
Calendrier de séchage en séchoir recommandé
FR-12
Calendrier de séchage en séchoir
http://www.tropicaltimber.info/wp-content/uploads/2015/09/KD_French.pdf
PROPRIÉTÉS CHIMIQUES DU BOIS
PROPRIÉTÉS MÉCANIQUES DU BOIS
Résistance à la flexion (module de rupture_MOR) 12%TH (kgf/cm²)
1517
Rigidité (module d'élasticité_ MOE) 12%TH (kgf/cm²)
217000
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
912
Résistance à la compression perpendiculaire à la fibre 12%TH (kgf/cm²)
139
Résistance au cisaillement (radial) 12%TH (kgf/cm²)
118
Dureté Janka (latérale) 12%TH (kgf)
1313
Dureté Janka (extrémités) 12%TH (kgf)
1299
OUVRABILITÉ
Sciage
Sawing of this species requires powerful equipment.
Coupe de placage de déroulage
Suitable for slicing.
Placage tranche
Suitable for slicing.
Effet d'émoussement
Severe blunting effect; stellited blades for sawing and carbide tools for machining are recommended.
Usinage
It needs powerful tools for processing. Possible difficulties caused by interlocked grain are reported.
Rabotage
Rather difficult; special tools are needed.
Moulurage
Moderately easy; tools must be cautiously sharpened.
Tournage
30
Perçage
Moderately easy; tools must be cautiously sharpened.
Mortaisage
Moderately easy; tools must be cautiously sharpened.
Clouage
Pre-boring is necessary.
Collage
Difficult to glue because of high density.
Ponçage
Easy to perform; it gives good results.
Polissage
Can be polished without surface preparation.
Compatibilité avec outils manuels
Working with hand tools is difficult.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
FURNITURE AND CABINETS, luxury furniture, cabinets, PLYWOOD AND VENEER, Decorative veneer, TURNING, ornaments, turned furniture, cutlery, lasts, TOOLS, tool handles, agricultural tools, CONTAINERS, cooperage, NAVAL CONSTRUCTION, boat fins, boat oars, OTHER AND MUSICAL INSTRUMENTS, handicrafts
MEUBLES ET M. DE RANGEMENT
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Meubles luxe
- 22 - Dry kiln schedules for commercial woods. Temperate and tropical. Section IV-Asian and Oceanian Woods
Armoires
- 24 - Empire Timbers
PANNEAUX ET PLACAGE
- 25 - Directory of Timber Trade Malaysia
Placage tranché
- 28 - Ministry of Agriculture, Fisheries & Forest of Fiji
Tournage
- 30 - Embassy of Honduras in Japan
Ornements
- 31 - Embassy of Colombia in Japan
Ornements
- 32 - Embassy of Cote d`Ivoire in Japan
Manches de couverts
- 33 - Embassy of Gabon in Japan
Formes à chaussures
- 34 - Embassy of Indonesia in Japan
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
Tonnellerie
- 51 - Recopilacion de propiedades mecanicas de maderas creciendo en Chile
CONSTRUCTION NAVALE
- 55 - Tropical Timber Atlas of Latin America
Navires_ponts
- 58 - Guía de Árboles de Bolivia
Navires_rames
- 60 - Amazonian Timbers, Characteristics and Utilization Volume II; Curuá-Una Experimental Forest Station
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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