BLUE GUM, EUCALIPTO (Eucalyptus globulus)
Trade Name
Blue gum, Eucalipto
Scientific Name
Eucalyptus globulus Labill.
Family
MYRTACEAE
Common Names
Tasmanian blue gum; Southern blue gum; Kurpoora maram; Fever tree; Eurabbi; Eucalyptus; Blue gum; Bloekom
Description Of The Tree
Botanical Description
It can reach a height of 45 m with a diameter of 90 cm.
Natural Distribution
It can be found mainly in Tasmania (Australia) but extensively cultivated in plantations in subtropical regions.
Plantations Available?
This species is extensively planted in subtropical regions.
Non Timber Uses
The wood contains gum veins filled with dark gummy substances. Brittle heart is commonly reported in this species.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Vessels in diagonal and/or radial pattern. Vessels exclusively solitary (over 90%). Vestured pits. Vessel-ray pits reticulate and/or foraminate. Paratracheal axial parenchyma scanty and/or vasicentric. Rays more than 10 per mm (abundant). Rays exclusively uniseriate. Fibers with distinctly bordered pits.
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Wood Macro Photo Tangential Plane
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Wood Micro Photo Of Transversal Section
Availability
Cites Status
Unrestricted
General Wood Description
Odor
It has no taste or odor.
Color
The sapwood is pale grayish, fairly clearly demarcated from pale yellow-brown to pinkish-gray heartwood.
COLOR INDEX (1=Black, 7=Light yellow,white)
5
Grain
The grain is generally interlocked, but patches of spiral or wavy grain can occur in straight-grained material.
Texture
The texture of the wood is medium.
Natural Durability
It is prone to termite and marine borer attack.
Natural durability index (1= Very high durability, 7=Vey low durability)
4
Internal Growth Stresses
Significant growth stresses are reported for this species.
Silica Content
Silica Content: It is non-siliceous. Silica Value: 0
Resistance To Impregnation
The sapwood is permeable and it can be treated with preservatives.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.73
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.82
Total shrinkage Tangential (Saturated to 0%MC) (%)
12.8
Total shrinkage Radial (Saturated to 0%MC) (%)
9.4
Drying Defects
Ease of Drying: The wood dries fairly slowly, with only slight seasoning defects. In Malaysia it takes 2.5 to 3 months to air dry 15 mm thick boards. Drying Defects: Cupping, bowing, end checking, splitting and staining are reported. Kiln Schedules: In Papua New Guinea a kiln schedule with a dry-bulb temperature of 55 to 71 degrees gave acceptable results for the wood of this species. Using this schedule the wood can be dried from 65% to 15% moisture to 15% moisture content in 6 days.
Recommended Dry Kiln Schedule
UK-C; US-T3-C2
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
1.4
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
1324
Stiffness (MOE) 12%MC (kgf/cm²)
186335
Compression parallel to fiber 12%MC (kgf/cm²)
784
Shear strength radial 12%MC (kgf/cm²)
65
Janka hardness (side) 12%MC (kgf)
756
Janka hardness (end grain) 12%MC (kgf)
658
Workability
Sawing
It is reported to saw fairly well for a heavy wood.
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 tends to pick up grain in localized areas due to interlocked grain.
Turning
30
Nailing
It needs pre-boring.
Gluing
It is reported to be easy to glue.
Staining
It has a good staining.
Coatings
This species is reported to be easy to paint or varnish.
REFERENCED USES
End Uses Summary
EXTERIOR GENERAL, bridges, poles, rails, crossarms, crossties, HOUSING GENERAL, flooring, FURNITURE AND CABINETS, PLYWOOD AND VENEER, TURNING, TOOLS, tool handles, agricultural tools, PACKING, CONTAINERS, truck bodies, truck flooring, NAVAL CONSTRUCTION, boats, port pillar, port storage, OTHER AND MUSICAL INSTRUMENTS, handicrafts, particleboard, paper
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
Poles
- 3 - Estudo dendrologico e determinacao das caracteristicas fisicas e mecanicas do genipapo (Genipa americana)
Rails
- 6 - Physical and mechanical properties of Eucalyptus deglupta Blume grown in Costa Rica
Crossheads Crossarms
- 7 - Maderas latinoamericanas. II, Quercus alata Q. costaricensis y Q. eugeniaefolia
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.
Panels, Veneers
- 25 - Directory of Timber Trade Malaysia
Turning
- 30 - Embassy of Honduras in Japan
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
Boats
- 56 - Manual de Identificación de Especies Forestales de la Subregión Andina.
Port Pillar
- 61 - Manual de Diseño para Maderas del Grupo Andino
Port Storage
- 62 - Estudio Tecnológico de Maderas del Perú (Zona Pucallpa) Vol I
Handcraft
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Particleboard
- 80 - Estudio Integral de la Madera para Construcción
Paper
- 82 - Compilation of Data on the Mechanical Properties of Foreign woods (Part 2) Central and South America.
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