Collection: Silver Wattle

Silver wattle (Acacia dealbata) is a fast-growing hardwood species native to eucalypt forests and woodlands in New South Wales, Victoria, and Tasmania. With its ability to regenerate quickly after fire, this species provides a sustainable source of timber, typically harvested from regrowth forests. Silver wattle trees can grow up to 30 metres in height with a stem diameter of 75 centimetres. The timber's striking colour and workability make it a popular choice for furniture and decorative applications.

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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 LowLowMediumHighVery 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

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SD6

SD7

SD8

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 Structural
No. 1
Structural
No. 2
Structural
No. 3
Structural
No. 4
Structural
No. 5
Unseasoned:F14F11F8F7F5
Seasoned:F14F11F8F7F5

Seasoned:

710kg/m3

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 brownPink to pink brownLight to dark redBrown, chocolate, mottled or streaky
  
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Modulus of Rupture - Unseasoned:68 MPa
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
 LowModerateReasonably HighHigh
 (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:
Lyctid Borer Susceptibility - Other: 
Termite Resistance:
Critical Radiance Flux - Lower:>2.2 and <4.5
Critical Radiance Flux - Higher:≥4.5
Smoke Development Rate:<750
1 - non-combustible2 - reasonably non-combustible3 - slightly combustible4 - combustible

Fire Properties Group
Number:

Average Specific Extinction Area:

<250

Bushfire Resistance:

BAL 12.5 and 19 – All AS3959 required applications