MABIN/PTERYGOTA (Pterygota horsfieldii)
Nombre comercial
Mabin/Pterygota
Nombre científico (con autor)
Pterygota horsfieldii (R.Br.) Kosterm.
Familia
STERCULIACEAE
Nombres Comunes
Impa (Papua New Guinea); Melebu (Malaysia)
Nombres científicos sinónimos (con autores)
Pterygota trinervia K Schumann; Pterygota thwaitesii (Mast.) Alston; Pterygota forbesii F. v. Mueller
DESCRIPCIÓN DEL ÁRBOL
Descripción botánica
It is a deciduous, monoecious, medium-sized to large tree up to 50 m tall. The bole is cylindrical to tapering, up to 120 cm in diameter and branchless for up to 36 m, with thin, small to tall buttresses.
Hábitat natural
It is found in riparian forests and secondary formations. It is a native of Irian Jaya and Papua New Guinea.
IDENTIFICACIÓN DE LA MADERA
Descripción anatómica de la madera
Wood diffuse porous. Tangential diameter of vessel lumina 200 micras or more (large). Vessels per mm2 less than 6 (rare). Simple perforation plates. Vessel-ray pits similar to intervessel pits in size and shape. Intervessel pits small, 7 micras or less. Paratracheal axial parenchyma scanty and/or vasicentric. Occasionally axial parenchyma confluent. Axial parenchyma storied. Prismatic crystals in non-chambered axial parenchyma cells. Occasionally two cells per parenchyma strand. 3 to 4 cells per parenchyma st 4 to 10 rays per mm (medium). Occasionally rays of two distinct sizes. Ray height more than 1 mm. Larger rays more than 4 seriate. Sheath cells. Prismatic crystals in radial alignment in procumbent ray cells (chambered cells). Occasionally body ray cells procum Fibers with simple to minutely bordered pits.
-
Foto macroscópica de la madera, plano tangencial
-
Foto microscópica sección transversal de la madera
Disponibilidad
Status de protección por CITES
Unrestricted
DESCRIPCIÓN GENERAL DE LA MADERA
Olor
Fresh wood has an unpleasant smell.
Color
The sapwood varies from straw to buff, not clearly demarcated. The heartwood is cream to pale brown.
Grano
The grain is reported to be straight or shallowly interlocked.
Veta
Texture is usually medium to coarse.
Durabilidad Natural
Logs are very susceptible to blue-stain, termite and pinhole borer attack, unless rapidly removed from forest or given protective treatment.
Indice de Durabilidad Natural (1=Muy alta, 7=Muy baja)
3
Dificultad para impregnar
This species can be impregnated fairly easily.
PROPIEDADES FÍSICAS DE LA MADERA
Densidad Básica (Peso anhidro/Vol. saturado) (g/cm³)
0.63
Densidad seca al aire (Peso y volúmen CH12%) (g/cm³)
0.70
Contracción Tangencial Total (Saturado hasta anhidro) (%)
10.3
Contracción Radial Total (Saturado hasta anhidro) (%)
4.0
Defectos por secado
Ease of Drying: Drying is rather slow and sometimes difficult to perform. Drying Defects: Risks of distortions.
Estabilidad Dimensional (Contracción Total Tangencial %/Contracción Total Radial %)
2.6
PROPIEDADES QUÍMICAS DE LA MADERA
PROPIEDADES MECÁNICAS DE LA MADERA
Resistencia a flexión (Módulo de ruptura) CH12% (kgf/cm²)
917
Rigidez (Módulo de elasticidad) CH12% (kgf/cm²)
135935
Resistencia a la compresión paralela a la fibra CH12% (kgf/cm²)
418
Resistencia a la compresión perpendicular a la fibra CH12% (kgf/cm²)
69
Cizallamiento radial CH12% (kgf/cm²)
100
Dureza Janka (lados) CH12% (kgf)
505
TRABAJABILIDAD
Aserrado
The wood has a tendency to tear when quarter sawing boards with interlocked grain.
Corte de chapa rotativa
Slicing is possible, but it may not be satisfactory due to the presence of harder and softer zones.
Chapa tranchada
Slicing is possible, but it may not be satisfactory due to the presence of harder and softer zones.
Pérdida de filo_romado
It is reported to gum up the saw-teeth. The blades must be cleaned frequently.
Cepillado
The response of this species to planing operations is good to fair. It tends to tear on radial boards with interlocked grain.
Moldurado
It can be used for molding with satisfactory results.
Torneado
30
Acabado
It finishes satisfactorily after filling
Doblar al vapor
Steam bending properties are poor.
Usos Reportados
USOS FINALES (RESUMEN)
EXTERIOR GENERAL, bridges, poles, crossties, HOUSING GENERAL, flooring, steps, panelling, shutter boards, FURNITURE AND CABINETS, cabinets, PLYWOOD AND VENEER, TURNING, SPORTS, TOOLS, tool handles, agricultural tools, PACKING, pallets, CONTAINERS, truck bodies, truck flooring, NAVAL CONSTRUCTION, port storage, OTHER AND MUSICAL INSTRUMENTS, handicrafts, shoes, moldings
EXTERIOR GENERAL
- 1 - Tabela de resultados de ensaios fisicos e mecanicos
Puentes
- 2 - 25 madeiras da amazonia de valor comercial, caracterizacao, macroscopica, usos comuns e indices qualificativos
Postes de transmisión
- 3 - Estudo dendrologico e determinacao das caracteristicas fisicas e mecanicas do genipapo (Genipa americana)
Durmientes
- 8 - Maderas latinoamericas. III, Podocarpus standleyi ,Podocarpus oleifolius, Drims granadensis, Magnolia poasana y Didymopanax pittieri
VIVIENDA GENERAL
- 10 - Silica in Timbers
Pisos
- 14 - Handbook of Hardwoods
Peldaños
- 17 - Tree Conservation Database
Paneles
- 18 - W3TROPICOS Missouri Botanical Garden
Persianas
- 20 - Prospect: The wood database
MUEBLES Y GABINETES
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Gabinetes
- 24 - Empire Timbers
TABLEROS Y CHAPAS
- 25 - Directory of Timber Trade Malaysia
Torneado
- 30 - Embassy of Honduras in Japan
IMPLEMENTOS DEPORTIVOS
- 38 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
HERRAMIENTAS
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Mangos herramientas
- 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
Mangos agrícolas
- 44 - Atlas of Peruvian Woods
PALLETS_EMBALAJES
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Pallets
- 48 - The strength properties of timbers
Carrocería de camión
- 53 - Timbers of the New World
Pisos de vagones_contenedores
- 54 - Bulletin of the Government Forest Experiment Station N.157: Identification of Tropical Woods
CONSTRUCCIÓN NAVAL
- 55 - Tropical Timber Atlas of Latin America
Puertos_estantería
- 62 - Estudio Tecnológico de Maderas del Perú (Zona Pucallpa) Vol I
artesanía
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Zapatos
- 70 - Proprietes physiques et mecaniques des bois tropicaux de l`union francaise
Molduras
- 79 - Padronização da Nomenclatura Comercial Brasileira das Madeiras Tropicais Amazônicas, Sugestão
Please Provide Information To View Producer Information