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ARARACANGA (Aspidosperma megalocarpon)

Trade Name

Araracanga

Scientific Name

Aspidosperma megalocarpon Mull. Arg.

Family

APOCYNACEAE

Common Names

Volador; Sibadanni; Piquia marfim; Pelmax; Ocre; Maparana; Malaria; Malady; Kromanti kopi; Jacamim; Huichichi; Gavetillo; Costillo; Copachi; Chicique; Chichique; Chichica; Chichi; Bois macaque; Bayalte; Ballester; Ararauba da terra firme; Alcarreto; Araracanga (Brazil); My Lady; Hielillo Blanco

Scientific Name Synonyms

Macaglia megalocarpa (Mull. Arg.) Kuntze; Aspidosperma matudae Lundell; Aspidosperma cruentum Woodson; Aspidosperma chiapense fo. tenax Matuda

Description Of The Tree

Botanical Description

The size of the mature tree is reported to be small to medium, attaining heights up to 20 to 30 m, and diameters of about 40 to 60 cm. The boles are often straight and cylindrical, covered with a typically ridged bark. Aspidosperma species exudate a milk

Natural Habitat

Aspidosperma megalocarpon is a common canopy tree of the lowland seasonal rainforest, it prefers moist soils. The timber is exploited on a small scale.

Natural Distribution

A. desmanthum is reported to occur from southern Mexico, through Central America, down to Colombia, it is also found in the Guyanas.

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Wood Identification

Anatomic Description Of Wood

Vessels exclusively solitary (over 90%). Tyloses common. Intervessel pits small, 7 micras or less. Paratracheal axial parenchyma scanty and/or vasicentric. Fibers with distinctly bordered pits.

  • Wood Macro Photo Tangential Plane
  • Wood Micro Photo Of Transversal Section

Availability

Cites Status

Unrestricted

General Wood Description

Odor

Odor and taste are indistinct.

Color

The sapwood is not clearly demarcated from the heartwood. The heartwood is bright orange pale brown to reddish brown, sometimes with rose veins.

COLOR INDEX (1=Black, 7=Light yellow,white)

5

Grain

The grain is straight to interlocked.

Texture

The texture is medium and uniform.

Natural Durability

The species is reported to have moderate natural resistance to decay.

Natural durability index (1= Very high durability, 7=Vey low durability)

3

Resistance To Impregnation

The response to preservative treatment is reported to vary, but is generally poor.

Wood Physical Properties

Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)

0.88

Air-dry Density (Weight and volume at 12%MC) (g/cm³)

1.02

Total shrinkage Tangential (Saturated to 0%MC) (%)

12.0

Total shrinkage Radial (Saturated to 0%MC) (%)

8.3

Drying Defects

Ease of Drying: Drying is fairly easy; some difficulties could occur when drying too fast. Drying Defects: No particular risks of drying defects, subject to normal drying conditions. Kiln Schedules: The kiln schedule has been tested.

Recommended Dry Kiln Schedule

US-T7-B3; UK-E

Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)

1.4

Wood Chemical Properties

Wood Mechanical Properties

Bending Strength (MOR),12%MC (kgf/cm²)

2054

Stiffness (MOE) 12%MC (kgf/cm²)

274000

Compression parallel to fiber 12%MC (kgf/cm²)

1020

Shear strength radial 12%MC (kgf/cm²)

156

Janka hardness (side) 12%MC (kgf)

1400

Janka hardness (end grain) 12%MC (kgf)

1508

Workability

Sawing

It is reported to respond well but it requires care in cutting.

Rotary Veneer Cutting

This timber is interesting for slicing.

Sliced Veneer

This timber is interesting for slicing.

Blunting Effect

Blunting effect is rated as moderate.

Planing

The material is reported to plane easily.

Moulding

Molding is easy, giving smooth surfaces.

Mortising

The wood is normally very easy to mortise.

Nailing

Pre-boring is recommended in nailing.

Gluing

Gluing properties are reported to be satisfactory.

Sanding

Sanding properties are satisfactory.

Finishing

This species is reported to finish smoothly.

Polishing

Polishing characteristics are reported to be excellent.

Response To Hand Tools

The wood is reported to work well with hand tools despite its hardness.

REFERENCED USES

End Uses Summary

EXTERIOR GENERAL, crossties, HOUSING GENERAL, flooring, frames, FURNITURE AND CABINETS, CONTAINERS, truck bodies, truck flooring, NAVAL CONSTRUCTION, port pillar

Exterior General
  • 1 - Tabela de resultados de ensaios fisicos e mecanicos
Crossties
  • 8 - Maderas latinoamericas. III, Podocarpus standleyi ,Podocarpus oleifolius, Drims granadensis, Magnolia poasana y Didymopanax pittieri
General Housing
  • 10 - Silica in Timbers
Flooring
  • 14 - Handbook of Hardwoods
Frames
  • 16 - Woods of the World
Furniture Cabinets
  • 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Truck Body
  • 53 - Timbers of the New World
Truck Flooring
  • 54 - Bulletin of the Government Forest Experiment Station N.157: Identification of Tropical Woods
Shipbuilding
  • 55 - Tropical Timber Atlas of Latin America
Port Pillar
  • 61 - Manual de Diseño para Maderas del Grupo Andino

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