Acacia fasciculifera

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Common products:
The species is utilized primarily for timber and heavy construction components. The heartwood is pink to reddish-brown, while sapwood is paler. Its wood is reported to be hard, heavy, and strong, suitable for posts, poles, decking, heavy flooring, and turning.

Wood and fiber:
Wood of sufficient size is sawn into structural timber and used in heavy-duty applications; smaller material may be used for turning and craft items. The fiber and structural characteristics reported include high density (about 900–1050 kg/m³ at about 12% moisture), high basic density (about 700–850 kg/m³), low shrinkage (green to oven-dry tangential shrinkage commonly 6–8%, radial about 3–5%), high durability ratings against termites and decay, and good strength properties (modulus of rupture in the range of 90–120 MPa and modulus of elasticity of about 12–17 GPa when kiln dried). These properties enable use in posts, poles, flooring, decking, and turning. The grain is interlocked, aiding stability and finishing; oil content is low, facilitating coatings adhesion.

Properties relevant to use:
The combination of high density and low to moderate shrinkage underpins structural performance. Class 1–2 natural durability to decay and termites, together with good bending strength and stiffness, supports exterior timber applications without requiring extensive preservative treatments. The interlocked grain supports stability but requires appropriate surfacing methods.

Standards and regulation:
Durable exterior hardwood use is subject to relevant timber codes and grading rules; sapwood, when present, may require preservative treatment in many jurisdictions. Where used as structural timber, compliance with local codes, grading standards, and grading inspection may be required.

Sustainability and sourcing:
In Australia, where the species is native, supply is from native forest thinning, salvage, or plantation thinning where established; transport footprint is regionally localized. Extraction should follow code-of-practice rules for forest operations to maintain site productivity.

Reference notes: Botanical identification and distribution are confirmed by taxonomic authorities (F.Muell. ex Benth.). Wood property ranges reflect comparative data across native acacia species; specific values may vary by site and tree form.

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