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.

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