< Retour PYINKADO (Xylia xylocarpa) Version imprimable
PYINKADO (Xylia xylocarpa)
Nom commercial
Pyinkado
Nom scientifique (avec auteur)
Xylia xylocarpa Taub.
Famille
LEGUMINOSAE
Noms communs (pays)
Yerul; Trumalla; Trul; Tiriwa; The ironwood of Burma; Tangudu; Tangedi; Tangani; Suria; Suaba; Shilve; Pyin; Pran; Praing; Pkhay; Pegu ironwood; Pangali; Panga; Orjori; Mai-sak; Mai-sa-lan; Kongora; Konda tangedu; Kadamaram; Kada; Jambu; Jambe; Jamba; Irummala; Eruvalu; Cam xe; Bojeh; Boja; Sokram (Cambodia); Cam-xe (Vietnam); Irul (India); Daeng (Thailand); Pyinkado (Myanmar); Burma ironwood (Myanmar); Deng (Laos)
Synonymes du nom scientifique (avec auteurs)
Xylia dolabriformis Benth.
DESCRIPTION DE L'ARBRE
Description botanique
Medium sized deciduous tree, up to 30 to 37 m in height and 75 cm in girth. The bole is branchless for up to 25 m, occasionally fluted, usually straight and cylindrical. The buttresses are small or absent.
Habitat naturel
Xylia xylocarpa is reported in dry evergreen forests, mixed deciduous forests and dry deciduous dipterocarp forests, up to 850 m of altitude.
Répartition naturelle
It is distributed in Myanmar and India and extending eastward into Cambodia and Thailand.
Existence de plantations?
This species is planted within its natural area of distribution.
IDENTIFICATION DU BOIS
Description anatomique du bois
Occasionally wood semi-ring porous and/or ring porous. Tangential diameter of vessel lumina 100 micras or less (very small). Colored deposits in heartwood vessels. Vestured pits. Vessels per mm2 5 to 20. Simple perforation plates. Vessel-ray pits similar to int Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Axial parenchyma aliform. Axial parenchyma confluent. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. 3 to 4 cells per parenchyma strand. 5 to 8 cells per parenchyma st 4 to 10 rays per mm (medium). Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Septate fibers present. Fibers very thick walled. Fibers with simple to minutely bordered pits.
Disponibilité
Statut CITES
Unrestricted
DESCRIPTION GÉNÉRALE DU BOIS
Odeur
It has no characteristic odor or taste.
Teinte
The sapwood varies from pale yellowish brown to reddish white. The heartwood is reddish brown.
Index de Teinte (1 = Noir, 7 = Jaune clair)
2
Grain
This timber has usually wavy or interlocked grain.
Texture
Texture of this species is reported to vary from fine to medium.
Durabilité naturelle
It is very durable and very resistant to fungi and insect attack, also against marine borers.
Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)
1
Résistance à l'imprégnation
The sapwood is reported to be easy to preserve but the heartwood is untreatable.
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.97
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
1.14
Retrait tangentiel total (saturé à 0%TH) (%)
6.7
Retrait radial total (saturé à 0%TH) (%)
3.3
Défauts dus au séchage
Ease of Drying: Drying is rather slow and sometimes difficult to perform. Drying Defects: Risks of checks and distortions. Kiln Schedules: The kiln schedule has been tested.
Calendrier de séchage en séchoir recommandé
UK-C; US-T3-C2
Ratio de stabilité dimensionnelle (% retrait tangentiel total/% retrait radial total)
2.0
PROPRIÉTÉS CHIMIQUES DU BOIS
PROPRIÉTÉS MÉCANIQUES DU BOIS
Résistance à la flexion (module de rupture_MOR) 12%TH (kgf/cm²)
1446
Rigidité (module d'élasticité_ MOE) 12%TH (kgf/cm²)
169645
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
811
Résistance au cisaillement (radial) 12%TH (kgf/cm²)
158
Dureté Janka (latérale) 12%TH (kgf)
999
Dureté Janka (extrémités) 12%TH (kgf)
1017
OUVRABILITÉ
Sciage
The wood is difficult to saw, but it is easier when green.
Coupe de placage de déroulage
It is not suitable for plywood manufacture.
Placage tranche
It is not suitable for plywood manufacture.
Effet d'émoussement
It is considered to have a severe blunting effect on the cutting elements.
Usinage
The use of tungsten carbide-tipped cutters and a reduced angle of 20 degrees are recommended.
Rabotage
Planing is reported to be difficult.
Tournage
30
Clouage
It needs pre-boring.
Collage
Resin can impede gluing.
Finissage
Finishing is good unless high resin contents are present.
Espèces de substitution
It could substitute South American Green-Heart, African Azobe and Tali.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
EXTERIOR GENERAL, bridges, poles, stakes posts, crossties, HOUSING GENERAL, beams, flooring, FURNITURE AND CABINETS, TURNING, BENDING, TOOLS, tool handles, agricultural tools, CONTAINERS, chemical storage, truck bodies, truck flooring, NAVAL CONSTRUCTION, port pillar
EXTERIOR GENERAL
- 1 - Tabela de resultados de ensaios fisicos e mecanicos
Ponts
- 2 - 25 madeiras da amazonia de valor comercial, caracterizacao, macroscopica, usos comuns e indices qualificativos
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
Pouters
- 11 - Prospect: The wood database
Planchers
- 14 - Handbook of Hardwoods
MEUBLES ET M. DE RANGEMENT
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Tournage
- 30 - Embassy of Honduras in Japan
Résistance à la flexion
- 35 - Embassy of Myanmar 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
CONTENANTS
- 50 - Properties of imported tropical woods
Chemical Storage
- 52 - Propiedades mecanicas y asociadas del pino insigne (Pinus radiata d.don)
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
Ports piliers
- 61 - Manual de Diseño para Maderas del Grupo Andino
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