Appearance of Silver Wattle
Silver wattle timber is light brown to subtly pink, featuring a straight grain and a porous, even texture. Its distinctive growth rings create an attractive figure, often producing a striped pattern on backsawn surfaces. This aesthetic quality makes it a sought-after timber for furniture and architectural design, where it is often paired with the darker blackwood as a complementary contrast.
Common Applications of Silver Wattle
Silver wattle is widely used in furniture making and decorative design, particularly for internal applications. It is a favourite among designers for its aesthetic appeal and ease of workability. The timber is suitable for architectural, structural, and decorative purposes, though it is not recommended for external use due to its limited durability in exposed conditions.
Workability of Silver Wattle
Silver wattle is highly workable, performing well with both machine and hand tools. It is easy to turn, bore, saw, and plane, delivering excellent results across a range of operations. Pre-drilling is advised when nailing to prevent splitting. The timber is also an excellent choice for bending and glues well with most adhesives. It readily accepts finishes and can be polished to achieve a smooth, lustrous surface, enhancing its decorative appeal.
Durability of Silver Wattle
While suitable for most internal applications, silver wattle is not recommended for outdoor use. The untreated sapwood is susceptible to lyctid borer attack, necessitating careful handling and application.
Origin and Availability of Silver Wattle
Silver wattle is found across New South Wales, Victoria, and Tasmania, thriving in eucalypt forests and woodlands. Thanks to its rapid growth and regenerative properties, the timber is typically available from managed regrowth forests harvested on rotation.
Conclusion
With its appealing aesthetics, ease of use, and sustainable sourcing, silver wattle remains a favoured hardwood for furniture makers and designers seeking a versatile and visually striking material for internal applications.
Very Low | Low | Medium | High | Very High | |
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Tangential : | 6.0% | 13.30% | |||
Radial : | 2.0% | ||||
Unit Movement Tangential: | 0.34% | ||||
Unit Movement Radial: | 0.17% |
Very High | High | Reasonably High | Medium High | Medium | Reasonably Low | Low | Very Low | |
Unseasoned: | S1 | S2 | S3 | S4 | S5 | S6 | S7 | S8 |
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Seasoned: | SD1 | SD2 | SD3 | SD4 | SD5 | SD6 | SD7 | SD8 |
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Structural No. 1 | Structural No. 2 | Structural No. 3 | Structural No. 4 | Structural No. 5 | |
Unseasoned: | F14 | F11 | F8 | F7 | F5 |
Seasoned: | F14 | F11 | F8 | F7 | F5 |
Seasoned: | 710kg/m3 |
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Unseasoned: | 800kg/m3 |
Very High | High | Reasonably High | Medium | Low | Very Low | |
Unseasoned: | J1 | J2 | J3 | J4 | J5 | J6 |
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Seasoned: | JD1 | JD2 | JD3 | JD4 | JD5 | JD6 |
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White, yellow, pale straw to light brown | Pink to pink brown | Light to dark red | Brown, chocolate, mottled or streaky | |
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Modulus of Rupture - Unseasoned: | 68 MPa |
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Modulus of Rupture - Seasoned: | 87 MPa |
Modulus of Elasticity - Unseasoned: | 10.5 GPa |
Modulus of Elasticity - Seasoned: | 11.4 GPa |
Maximum Crushing Strength - Unseasoned: | 31 MPa |
Maximum Crushing Strength - Seasoned: | 54 MPa |
Impact - Unseasoned: | 14 J |
Impact - Seasoned: | 19 J |
Toughness - Unseasoned: | Medium - 15 - 24 Nm |
Toughness - Seasoned: | Medium - 15 - 24 Nm |
Hardness - Unseasoned: | 4.0 |
Hardness - Seasoned: | 5.1 |
Low | Moderate | Reasonably High | High | |
(0 - 5 yrs) | (5 - 15 yrs) | (15 - 25 yrs) | (more than 25 yrs) | |
In-Ground: | ||||
(0 - 7 yrs) | (7 - 15 yrs) | (15 - 40 yrs) | (More than 40 yrs) | |
Above ground: | ||||
(0 - 20 yrs, usually < 5) | (21 - 40 yrs) | (41 - 64 yrs) | (More than 60 yrs) | |
Marine Borer Resistance: |
Lyctid Borer Susceptibility: | |
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Lyctid Borer Susceptibility - Other: | |
Termite Resistance: |
Critical Radiance Flux - Lower: | >2.2 and <4.5 |
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Critical Radiance Flux - Higher: | ≥4.5 |
Smoke Development Rate: | <750 |
1 - non-combustible | 2 - reasonably non-combustible | 3 - slightly combustible | 4 - combustible | |
Fire Properties Group |
Average Specific Extinction Area: | <250 |
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Bushfire Resistance: | BAL 12.5 and 19 – All AS3959 required applications |