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:
Spread of flame: 5
Smoke Development: 3

The material is very hard to work, limiting some applications requiring fine detailing.

Applications include heavy engineering, marine structures, poles, boat building, framework, flooring and decking.

Plentiful. Select joinery grade grade tends to have a lot shorter length spec.

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