RAIN TREE (Samanea saman)
Nome comercial
Rain tree
Nome científico (autor)
Samanea saman (Jacq.) Merril
Família
Lequminosae
Nomes comuns
Bordao de velho (Brazil); Ohai (Hawaii); Saman (Mexico); Rain tree (Fiji); Kihudjau, Trembesi (India); Kampoo (Thailand); Monky Pod (Philippines)
Nome científico sinônimo (autor
Pithecolobium saman Benth
DESCRIÇÃO DA ÁRVORE
Descrição botânica
Evergreen, 20~30m tall. Usually has a short, massive trunk which divides into wide spreading branches.Tree may have originated from Venezuela.
Habitat natural
Fast-growing species,prefers low-lying areas,gregarious
Distribuição natural
The West lndies, Central and Sauth America. Planted Hawaii,Fiji,Pacihic area, Sauth-east Asia
IDENTIFICAÇÃO DA MADEIRA
Descrição anatômica da madeira (macro e micro)
Wood diffuse porous. Simple perforation plates. Vestured pits. Vessel-ray pits similar to intervessel pits in size and shape. Intervessel pits large, 10 micras or more. Vessels per mm2 less than 6 (rare). Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma aliform. Axial parenchyma confluent. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. Occasionally rays more than 10 per mm (abundant). Fibers with simple to minutely bordered pits. Larger rays more than 4 seriate. Ray width 1 to 3 cells. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent).
DISPONIBILIDADE
Situação CITES sobre a proteção
Unrestricted
DESCRIÇÃO GERAL DA MADEIRA
Cor
Heartwood is a lustrous pale brown to Pinkish -brown colour with dark brown streak. Sapwood is distinct, straw coloured, 60mm or more wide.
Indice de cor
3
Grã
The grain is interlocked often quite severely.
Veios ou desenhos na superfície
Texture is intermediate, although vessels are conspicuous because of surrounding soft tissue.
Brilho
Lustrous.
DURABILIDADE NATURAL
Durability rating variable reported to be. Durable under water. Heartwood reported to be resistant to termites, Liable to blue-stain. Heartwood is not durable. Sapwood highly susceptible to Lyctus attack
Indice de durabilidade natural
6
PROPRIEDADES FÍSICAS DA MADEIRA
Densidade básica (Peso seco/Volume saturado) (g/cm³)
4.60
Densidade seca ao ar 12% (g/cm³)
0.53
Contração Tangencial Total (Saturado até peso seco) (%)
1.8
Contração Radial Total (Saturado até peso seco) (%)
1.0
Defeitos causados pela secagem
Ease of Drying: Sarosaro dries rapidly but even under miled conditions backsawn stock develops surface checks, most of which are shallow enough in 25mm material to be removed by machining. Some boards wrap slightly, but final steaming is not recommended as checks reopen. Kiln Schedules: about 6 days are required to kiln dry from green to 12%m.c. reduced to 3 1/2 day of preliminary air drying to 25% is under taken. A 24 hour high humidity trearment shuold follow kiln drying. 50mm stoke; Prelimnary air drying to 20% m.c. is recommmended. F
Estabilidade dimensional (Contração Tangencial Total %/Contração Radial Total %)
1.8
PROPRIEDADES QUÍMICAS DA MADEIRA
PROPRIEDADES MECÂNICAS DA MADEIRA
Resistência a flexão a 12% (Módulo de ruptura) (kgf/cm²)
450
Flexão Estática a 12% (Módulo de elasticidade) (kgf/cm²)
79000
Resistência a compressão paralela as fibras a 12% (kgf/cm²)
300
Cisalhamento radial a 12% (kgf/cm²)
90
TRABALHABILIDADE
Serrar ou Cortar
Tension wood may be encountered causing excessive springing and fibrous sawn surfaces packed with sawdust.
Desdobro da tora em torno para lâminas
logs selected for relatively straight grain and good figure could yield high quality sliced veneer.
Desdobro da tora em faqueadeira para lâminas
logs selected for relatively straight grain and good figure could yield high quality sliced veneer.
Aspectos do processamento em máquinas
Despite the relatively low density, air dry machining properties are below average. Radial surfaces suffer some moderate to rough chipping because of interlocked grain. Soft tissue surrounding the vessels tend to give rough radial surfaces.
USOS FINAIS RELATADOS
USOS FINAIS (RESUMO)
HOUSING GENERAL, beams, boards, frames, panelling, FURNITURE AND CABINETS, luxury furniture, cabinets, PLYWOOD AND VENEER, faces, cores, SPORTS, bowling polo balls, OTHER AND MUSICAL INSTRUMENTS, handicrafts
CASAS
- 10 - Silica in Timbers
Vigas
- 11 - Prospect: The wood database
Tábuas
- 13 - Dry kiln schedules for commercial woods. Temperate and tropical. Section III. Latin American (Mexico, Central, and South America) Woods–Conventional Temperatures
Marcos de portas
- 16 - Woods of the World
Painéis
- 18 - W3TROPICOS Missouri Botanical Garden
MÓVEIS GABINETES
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Móveis finos
- 22 - Dry kiln schedules for commercial woods. Temperate and tropical. Section IV-Asian and Oceanian Woods
Gabinetes
- 24 - Empire Timbers
Lâminas de superfície das chapas
- 26 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
Lâminas de miolo das chapas
- 27 - Embassy of Brazil in Japan
Tacos
- 40 - Internet
Artesanato
- 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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