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PASANG (Lithocarpus sundaicus)

Trade Name

Pasang

Scientific Name

Lithocarpus sundaicus (Blume) Rehder

Family

Fagaceae

Common Names

Sunda oak (Philippines); Sunda oak (United States of America); Sunda oak (United Kingdom); Tempening (Malaysia); Mempening puteh (Malaysia); Oak (United Kingdom); Mempening bangkas (Malaysia); Spike (United Kingdom); Oak PNG (Papua New Guinea); Pangnan-bundok (Papua New Guinea); Vak (Papua New Guinea); Pangnan (Philippines); Pasang (Indonesia); Mempening bagan (Malaysia)

Scientific Name Synonyms

Lithocarpus pruinosa (Blume) Rehder; Lithocarpus lamponga (Miq.) Rehder; Lithocarpus grandifrons (King ex Hook.f.) A. Camus

Description Of The Tree

Botanical Description

It is a medium-sized to fairly large tree up to 36 m tall. The bole is branchless for up to 20 m, up to 100 cm in diameter, often with buttresses, occasionally stilt-rooted.

Natural Habitat

Lithocarpus sundaicus is common in primary lowland to montane forests of peninsular Malaysia and Java. It occurs up to 2,600 m of altitude.

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Wood Identification

Anatomic Description Of Wood

Wood diffuse porous. Tyloses common. Vessels per mm2 5 to 20. Vessel-ray pits reticulate and/or foraminate. Simple perforation plates. Intervessel pits medium, 7 to 10 micras. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma aliform. Axial parenchyma confluent. 5 to 8 cells per parenchyma strand. 4 to 10 rays per mm (medium). Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kribs-II). Septate fibers present. Fibers with distinctly bordered pits. Fibers with simple to minutely bordered pits.

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

Availability

Cites Status

Unrestricted

General Wood Description

Odor

It usually has tannin odor.

Color

The sapwood is fairly clearly differentiated, lighter pale brown in color. The heartwood varies from yellow-brown to brown., occasionally with darker colored stripes.

Grain

It is straight, rarely interlocked.

Texture

Texture is usually medium to coarse.

Luster

The wood surface is moderate in luster.

Natural Durability

The natural durability is moderate, it is prone to blue stain.

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

3

Resistance To Impregnation

The heartwood is reported to be untreatable, but the sapwood is moderately resistant to preservative treatment.

Wood Physical Properties

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

0.62

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

0.69

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

7.6

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

3.4

Drying Defects

Ease of Drying: The wood air dries rather slowly. Boards 15 mm thick take about 2 months to air dry. Drying Defects: It is liable to some bowing, end checking and splitting.

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

2.2

Wood Chemical Properties

Wood Mechanical Properties

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

1243

Stiffness (MOE) 12%MC (kgf/cm²)

197686

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

632

Workability

Sawing

The behavior of this species in sawing is considered to be easy to slightly difficult.

Rotary Veneer Cutting

This species is reported to have good characteristics for lamination.

Sliced Veneer

This species is reported to have good characteristics for lamination.

Machining

It splits easily.

Planing

Planing operations are rather easy, but sharp tools are recommended.

Boring

Boring of this species is reported to be easy.

Nailing

It needs pre-boring for nailing.

Gluing

The use of urea-formaldehyde glues is recommended.

Finishing

This species is reported to give a good finish.

Coatings

It is easy to paint or varnish.

Polishing

It is easy to polish.

Substitute Species

It is mixed or interchangeable with Castanopsis.

REFERENCED USES

End Uses Summary

EXTERIOR GENERAL, bridges, HOUSING GENERAL, beams, boards, flooring, panelling, FURNITURE AND CABINETS, PLYWOOD AND VENEER, TOOLS, tool handles

Exterior General
  • 1 - Tabela de resultados de ensaios fisicos e mecanicos
Bridges
  • 2 - 25 madeiras da amazonia de valor comercial, caracterizacao, macroscopica, usos comuns e indices qualificativos
General Housing
  • 10 - Silica in Timbers
Beams
  • 11 - Prospect: The wood database
Boards
  • 13 - Dry kiln schedules for commercial woods. Temperate and tropical. Section III. Latin American (Mexico, Central, and South America) Woods–Conventional Temperatures
Flooring
  • 14 - Handbook of Hardwoods
Paneling
  • 18 - W3TROPICOS Missouri Botanical Garden
Furniture Cabinets
  • 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Panels, Veneers
  • 25 - Directory of Timber Trade Malaysia
Tools
  • 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Tool Handles
  • 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)

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