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MALAS (Homalium tomentosum)

Trade Name

Malas

Scientific Name

Homalium tomentosum Benth.

Family

FLACOURTIACEAE

Common Names

Thewalaw; Ob; Myaukrigo; Myaukngo; Myaukchaw; Moulmein lancewood; Mai-kan-ang; Khanang; Burma lancewood; Delingsem (Indonesia); Gerinseng (Indonesia); Neku (Indonesia); Puei khang hai (Thailand); Chang phuek luang (Thailand); Kha nang (Thailand); Khen nang (Laos); Myauk chaw (Myanmar); Phloeuo nieng (Cambodia); Kaladdo (Indonesia)

Description Of The Tree

Botanical Description

It is a deciduous medium-sized tree up to 30 m tall. The bole is well shaped, up to 40 cm in diameter, buttressed.

Natural Habitat

It is found in mixed deciduous forests, usually in areas where the dry monsoon season is clearly defined, up to 700 m of altitude.

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Wood Identification

Anatomic Description Of Wood

Vessels per mm2 more than 20 (very abundant). Tangential diameter of vessel lumina 100 micras or less (very small). Vessel-ray pits small. Axial parenchyma absent or extremely rare, non visible with magnifying glass (8x). Rays more than 10 per mm (abundant). Heterogeneous rays and/or multiseriate heterogeneous rays. Prismatic crystals in the ray cells.

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

Availability

Cites Status

Unrestricted

General Wood Description

Odor

Freshly sawn wood has a distinct iodine-like odor that often persists through to the seasoned material.

Color

The heartwood is brown, reddish-brown or sometimes yellow-brown. The sapwood is slightly paler and not distinctly demarcated from the heartwood.

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

6

Grain

The grain is straight or shallowly interlocked, sometimes deeply interlocked.

Texture

The wood is mostly fine in texture.

Natural Durability

The wood is fairly resistant to termite attack.

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

4

Resistance To Impregnation

The absorption of preservatives by the heartwood is only fair, the sapwood can be treated well.

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) (%)

10.7

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

5.6

Drying Defects

Ease of Drying: Air seasoning is reported to be good.

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

1.9

Wood Chemical Properties

Wood Mechanical Properties

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

1345

Stiffness (MOE) 12%MC (kgf/cm²)

146690

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

701

Shear strength radial 12%MC (kgf/cm²)

100

Janka hardness (side) 12%MC (kgf)

1221

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

1407

Workability

Sawing

Sawing operations are rated as easy to fair due to the wood density.

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.

Blunting Effect

It is considered to have a slight blunting effect on the cutting elements.

Machining

Machining of this species is reported to be easy.

Planing

Planing of this species is reported to be easy, with slight picking up on the radial faces.

Turning

30

Nailing

Pre-boring is needed.

Gluing

This species is easy to glue.

Sanding

This species is reported to be easy to sand.

Finishing

It is easy to finish.

Polishing

Polishing of this wood is easy.

REFERENCED USES

End Uses Summary

EXTERIOR GENERAL, bridges, stakes posts, crossties, HOUSING GENERAL, flooring, FURNITURE AND CABINETS, common furniture, TURNING, SPORTS, TOOLS, tool handles, agricultural tools, PACKING, CONTAINERS, truck bodies, truck flooring, NAVAL CONSTRUCTION, port pillar, OTHER AND MUSICAL INSTRUMENTS, axle

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
Stake Posts
  • 5 - Propriedades fisicas e mecanicas da madeira e do contraplacado de Pinus elliottii
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
Furniture Cabinets
  • 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Furniture, Common
  • 23 - Handbook of Hardwoods
Turning
  • 30 - Embassy of Honduras in Japan
Sports
  • 38 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
Tools
  • 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Tool Handles
  • 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
Agricultural Tools
  • 44 - Atlas of Peruvian Woods
Packing
  • 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
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
Axles
  • 73 - Handbook of Hardwoods

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