URUNDAY (Astronium urundeuva)
Nome comercial
Urunday
Nome científico (autor)
Astronium urundeuva (Allemao) Engl.
Família
ANACARDIACEAE
Nomes comuns
Pau-ferro (Brazil); Aderno; Gibatão (Brazil); Guaritá; Urunday Del Noroeste; Urunde`y mi; Cuchi; Arveira (Brazil); Orindeúva (Brazil); Areoeira Petra (Brazil); Arendeúva (Brazil); Arindeúva (Brazil); Aroeira Do Campo (Brazil); Aroeira Da Serra (Brazil); Gonçalo Alves (Brazil); Aroeira Legitima (Brazil); Aroeire; Urundeuva (Brazil); Aroeira Do Sertão (Brazil)
Nome científico sinônimo (autor
Myracrodruon urundeuva Allemao; Astronium juglandifolium Griseb.
DESCRIÇÃO DA ÁRVORE
Descrição botânica
It is a medium size tree, it attains heights from 20 to 25 m, with a diameter at breast height between 40 to 90 cm. Occasionally the diameter reaches 100 cm.
Habitat natural
Astronium urundeuva is a dominant tree occurring widely in the cerrado forests. Large natural stands have become scarce in many places. In the "Chaco" region it is reported to form quite homogeneous stands.
Distribuição natural
It is found in Argentina, Bolivia; Brazil and Paraguay.
Usos não madeiravéis
The bark is reported to contain up to 17% of tannin, it is used as a black dye.
IDENTIFICAÇÃO DA MADEIRA
Descrição anatômica da madeira (macro e micro)
Wood diffuse porous. Vessels solitary and in short radial multiples. Tyloses common. Vessels per mm2 10 to 20 (abundant). Simple perforation plates. Vessel-ray pits coarse in marginal rows. Vessel-ray pits larger than the intervessel pits. Occasionally intervess Axial parenchyma absent or extremely rare, non visible with magnifying glass (8x). Paratracheal axial parenchyma scanty and/or vasicentric. Occasionally prismatic crystals in non-chambered axial parenchyma cells. 3 to 4 cells per parenchyma strand. Rays 1 to 4 seriate. Larger rays more than 4 seriate. Prismatic crystals in the ray cells. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Heterogeneous rays and/or multiseriate heterogeneous rays. Body ray cells procumbent with mostly Non-septate fibers. Fibers with simple to minutely bordered pits.
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Foto de madeira macroscópica (radial)
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Foto da secção transversal microscopica
DISPONIBILIDADE
Situação CITES sobre a proteção
Unrestricted
DESCRIÇÃO GERAL DA MADEIRA
Odor ou Cheiro
Distinct and unpleasant
Cor
The white yellowish sapwood is clearly differentiated from the pinkish or light brown heartwood.
Indice de cor
2
Grã
The grain is reported to be straight or interlocked.
Veios ou desenhos na superfície
This species is usually reported to have a medium texture.
Brilho
Luster is usually moderate.
DURABILIDADE NATURAL
The wood is very resistant, even under extreme exposure conditions.
Indice de durabilidade natural
1
Tratamento preservativo
The heartwood is reported to be very difficult to treat, but the sapwood treats well.
PROPRIEDADES FÍSICAS DA MADEIRA
Densidade básica (Peso seco/Volume saturado) (g/cm³)
1.00
Densidade seca ao ar 12% (g/cm³)
1.19
Contração Tangencial Total (Saturado até peso seco) (%)
7.2
Contração Radial Total (Saturado até peso seco) (%)
3.8
Defeitos causados pela secagem
Ease of Drying: Air seasoning is reported to be fairly rapid. Drying Defects: Warping is reported. Risk of casehardening when thick stock is processed. Kiln Schedules: Careful drying is recommended.
Estabilidade dimensional (Contração Tangencial Total %/Contração Radial Total %)
1.9
PROPRIEDADES QUÍMICAS DA MADEIRA
PROPRIEDADES MECÂNICAS DA MADEIRA
Resistência a flexão a 12% (Módulo de ruptura) (kgf/cm²)
1653
Resistência a compressão paralela as fibras a 12% (kgf/cm²)
842
TRABALHABILIDADE
Serrar ou Cortar
The response of this wood in sawing is fair.
Aspectos do processamento em máquinas
It is a very hard wood, reinforced cutting tools are recommended.
Aplainamento
Planing of this species is fair.
Torneamento
30
Furação
Boring operations are fair.
Acabamento
This species is reported to be easy to finish.
Espécies alternativas
This wood was used for cross-ties grouped under the common name of "quebracho colorado" (Schinopsis spp.).
USOS FINAIS RELATADOS
USOS FINAIS (RESUMO)
EXTERIOR GENERAL, bridges, poles, paling, stakes posts, rails, crossarms, crossties, piers, HOUSING GENERAL, beams, joists, flooring, TURNING, lasts, PACKING, CONTAINERS, truck bodies, truck flooring, OTHER AND MUSICAL INSTRUMENTS, yoke
EXTERIOR
- 1 - Tabela de resultados de ensaios fisicos e mecanicos
Pontes
- 2 - 25 madeiras da amazonia de valor comercial, caracterizacao, macroscopica, usos comuns e indices qualificativos
Postes de energia
- 3 - Estudo dendrologico e determinacao das caracteristicas fisicas e mecanicas do genipapo (Genipa americana)
Ripas para cercas
- 4 - Estudo dendrologico e determinacao das caracteristicas fisicas e mecanicas da bicuiba
Postes para cercas
- 5 - Propriedades fisicas e mecanicas da madeira e do contraplacado de Pinus elliottii
Varão de cerca
- 6 - Physical and mechanical properties of Eucalyptus deglupta Blume grown in Costa Rica
Cruzetas
- 7 - Maderas latinoamericanas. II, Quercus alata Q. costaricensis y Q. eugeniaefolia
Dormentes
- 8 - Maderas latinoamericas. III, Podocarpus standleyi ,Podocarpus oleifolius, Drims granadensis, Magnolia poasana y Didymopanax pittieri
Pilar
- 9 - Maderas latinoamericanas. IV, Nectandra sp. Ocotea austinii, Persea sp. aff. vesticula, Persea schiedeana
CASAS
- 10 - Silica in Timbers
Vigas
- 11 - Prospect: The wood database
Vigotas
- 12 - Tropical timbers of the world. Part I-Tropical American Species
Pisos
- 14 - Handbook of Hardwoods
Torneamento
- 30 - Embassy of Honduras in Japan
Formas de sapateiro
- 34 - Embassy of Indonesia in Japan
PALETES PARA EMBALAGENS
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Carroceria de caminhão
- 53 - Timbers of the New World
Pisos para assoalho de trem
- 54 - Bulletin of the Government Forest Experiment Station N.157: Identification of Tropical Woods
Yokes
- 74 - World Timbers, Vol.2, North and South America
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