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Ironbark - Red
Red Timber Species
Species Name: Ironbark - Red
Botanical name(s): Eucalyptus sideroxylon Eucalyptus creba
Eucalyptus fibrosa
Size and location information: The two most common Red Ironbarks are Mugga Ironbark
(Eucalyptus sideroxylon) and Narrow-leaved Red Ironbark (E. creba). A third Ironbark that also falls into
this category is Broad-leaved Red Ironbark (E. fibrosa). Mugga Ironbark extends from Victoria through
the western slopes of NSW into southern Queensland. Narrow-leaved Red Ironbark is found in the
coastal, tablelands and western plains areas of central to northern NSW and extends well up into
Queensland in a belt between the coast and the just west of the Great Dividing Range. Broad-leaved
Red Ironbark has a discontinuous distribution from the south coast of NSW to central coastal
Queensland.
Some Red Ironbarks, particularly Mugga and Narrow-leaved Red Ironbark, have a propensity to pipe,
where a hollow is formed in the centre of the trunk which can reduce the recovery rates and sectional
sizes of sawn timber.
Description: The heartwood colour is a deep red. Sapwood is very distinctive, being a pale yellow in
colour. Texture is medium and even.
Density: Green: 1200kg/m3 Dry: 1100kg/m3
Janka Hardness Rating: Dry: 11.9
Shrinkage: 3.5% Radial, 7.0% tangential
Durability: In ground: Class 1 Above ground: Class 1
Lyctids Susceptibility: Yes
Termite Resistance (AS3660): Yes
Strength Group: S2/SD3
Fire Hazard properties:
Ignitability:
Spread of flame: 5
Smoke Development: 3
Workability
The material is very hard to work, limiting some applications requiring fine detailing.
Uses:
Applications include heavy engineering, marine structures, poles, boat building, framework, flooring
and decking.
Availability:
Plentiful. Select joinery grade grade tends to have a lot shorter length spec.
Architraves and Skirting
Huge range of profiles and sizes available
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