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UXI (Endopleura uchi)

Trade Name

Uxi

Scientific Name

Endopleura uchi (Huber) Cuatrec.

Family

HUMIRIACEAE

Common Names

Pururu (Brazil); Cumatê (Brazil); Axuá (Brazil); Uxi-Liso (Brazil); Uxi (Brazil); Paruru (Brazil); Cumaru-Verdadeiro (Brazil); Atanã (Brazil)

Scientific Name Synonyms

Sacoglottis uchi Huber

Description Of The Tree

Botanical Description

E. uchi develops cylindrical and straight stems with an average commercial length of 9 m and an average trunk diameter of about 50 cm.

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Wood Identification

Anatomic Description Of Wood

Vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 200 micras or more (large). Vessels per mm2 less than 6 (rare). Multiple perforation plates. Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Axial parenchyma in discontinuous tangential lines. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. Rays more than 10 per mm (abundant). Fibers with distinctly bordered pits.

Availability

Cites Status

Unrestricted

General Wood Description

Odor

It has no characteristic odor or taste.

Color

Heartwood and sapwood are slightly distinct. Both are reported to be light reddish-brown.

Grain

This species is reported to have straight grain.

Texture

The wood is typically medium in texture.

Luster

The wood is described as moderate in luster.

Resistance To Impregnation

The heartwood is untreatable, but the sapwood is reported to be easy to preserve with creosote or CCA salts.

Wood Physical Properties

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

0.78

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

0.89

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

9.6

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

6.4

Recommended Dry Kiln Schedule

BR-B

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

1.5

Wood Chemical Properties

Wood Mechanical Properties

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

1567

Stiffness (MOE) 12%MC (kgf/cm²)

156000

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

763

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

133

Shear strength radial 12%MC (kgf/cm²)

191

Janka hardness (side) 12%MC (kgf)

1337

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

1059

Workability

Planing

Processing is rated as fair, with bad finishing. Risk of grain tearing and fuzzy surfaces is reported.

Turning

30

Sanding

Sanding operations are rated as fair, with bad finishing. Fuzzy surfaces are reported.

Response To Hand Tools

It is difficult to cut.

REFERENCED USES

End Uses Summary

HOUSING GENERAL, boards, panelling, TURNING, NAVAL CONSTRUCTION, boats

General Housing
  • 10 - Silica in Timbers
Boards
  • 13 - Dry kiln schedules for commercial woods. Temperate and tropical. Section III. Latin American (Mexico, Central, and South America) Woods–Conventional Temperatures
Paneling
  • 18 - W3TROPICOS Missouri Botanical Garden
Turning
  • 30 - Embassy of Honduras in Japan
Shipbuilding
  • 55 - Tropical Timber Atlas of Latin America
Boats
  • 56 - Manual de Identificación de Especies Forestales de la Subregión Andina.

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