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ANGELIM (Hymenolobium modestum)

Nome comercial

Angelim

Nome científico (autor)

Hymenolobium modestum Ducke

Família

LEGUMINOSAE

Nomes comuns

Alcornoco; Angelim-Pedra (Brazil); Angelim (Brazil)

DESCRIÇÃO DA ÁRVORE

Descrição botânica

The commercial lengths are reported to average 6 to 7 m, with diameters from 45 to 55 cm. The logs are reported to be straight and cylindrical, with low buttresses.

Habitat natural

Hymenolobium modestum is a dominant tree found in the canopy of terra firme tropical rain forests of northern South America. It is reported to prefer dry areas.

Distribuição natural

The natural distribution range of this genus is the Amazon basin and northern South America.

Usos não madeiravéis

Fairly often oily or waxen patches can be observed.

IDENTIFICAÇÃO DA MADEIRA

Descrição anatômica da madeira (macro e micro)

Wood diffuse porous. Vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 200 micras or more (large). Resinous deposits in heartwood vessels. Vestured pits. Vessels per mm2 6 to 10 (medium). Simple perforation plates. Vessel-ray pits sim Axial parenchyma in marginal or in seemingly marginal bands. Axial parenchyma aliform. Axial parenchyma confluent. Axial parenchyma confluent unilateral paratracheal. Prismatic crystals in non-chambered axial parenchyma cells. Prismatic crystals in chambered a 4 to 10 rays per mm (medium). Rays storied. Rays 1 to 4 seriate. Body ray cells procumbent with one row of upright and/or square marginal cells (Kribs-III). Fibers very thin walled. Fibers with simple to minutely bordered pits.

  • Foto de madeira macroscópica (tangencial)
  • Foto da secção transversal microscopica

DISPONIBILIDADE

Situação CITES sobre a proteção

Unrestricted

DESCRIÇÃO GERAL DA MADEIRA

Odor ou Cheiro

It has no discernible odor or taste.

Cor

The sapwood is pink color, the heartwood is reddish yellow with lighter color stripes.

Indice de cor

5

Grã

Interlocked grain is reported in this species.

Veios ou desenhos na superfície

The wood is mostly coarse in texture.

Brilho

Timber of this species is low in luster.

DURABILIDADE NATURAL

It is resistant against fungi and dry wood insects, but it is rated as moderately resistant against marine borers.

Indice de durabilidade natural

4

Tratamento preservativo

The sapwood is easy to preserve with water soluble products, the heartwood is untreatable.

PROPRIEDADES FÍSICAS DA MADEIRA

Densidade básica (Peso seco/Volume saturado) (g/cm³)

0.68

Densidade seca ao ar 12% (g/cm³)

0.76

Contração Tangencial Total (Saturado até peso seco) (%)

7.5

Contração Radial Total (Saturado até peso seco) (%)

4.6

Programa de secagem recomendável

BR-A

Estabilidade dimensional (Contração Tangencial Total %/Contração Radial Total %)

1.6

PROPRIEDADES QUÍMICAS DA MADEIRA

PROPRIEDADES MECÂNICAS DA MADEIRA

Resistência a flexão a 12% (Módulo de ruptura) (kgf/cm²)

1072

Flexão Estática a 12% (Módulo de elasticidade) (kgf/cm²)

146822

Resistência a compressão paralela as fibras a 12% (kgf/cm²)

640

Resistência a compressão perpendicular as fibras a 12% (kgf/cm²)

107

Cisalhamento radial a 12% (kgf/cm²)

119

Dureza Janka a 12% (perpendicular) (kgf)

704

Dureza Janka a 12% (paralela) (kgf)

783

TRABALHABILIDADE

Serrar ou Cortar

Cutting behavior is reported to be fair to difficult.

Desdobro da tora em torno para lâminas

This species is reported to be interesting for decorative veneer.

Desdobro da tora em faqueadeira para lâminas

This species is reported to be interesting for decorative veneer.

Desgaste de ferramentas

The blunting effect is rated as negligible.

Aplainamento

Planning operations are reported to be easy, but with very bad finishing. Torn and fuzzy surfaces may occur.

Furação

Boring is easy but with bad finishing.

Comportamento na aplicação de pregos

Hymenolobium has a good holding of nails, but risks of split on end grain are reported.

Colagem

Gluing of this species is easy.

Lixamento

Sanding is easy but with bad finishing, fuzzy surfaces are reported.

Trabalhabilidade com ferramentas manuais

It is difficult to cut.

USOS FINAIS RELATADOS

USOS FINAIS (RESUMO)

HOUSING GENERAL, FURNITURE AND CABINETS

CASAS
  • 10 - Silica in Timbers
MÓVEIS GABINETES
  • 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.

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