Collection: Yellow Gum

Yellow Gum (Eucalyptus leucoxylon) is a hardy medium-sized hardwood reaching up to 20 meters in height. Known for its durability and structural strength, Yellow Gum grows natively from southern New South Wales through central and western Victoria to much of South Australia. Highly adaptable to various soils and climates, this species is drought and frost-tolerant, making it an ideal choice for heavy construction applications.

No products found
Use fewer filters or remove all

Appearance of Yellow Gum Timber

The heartwood of Yellow Gum ranges from yellow to pale brown, often displaying pink and yellow tints around its features. Sapwood is slightly paler, creating a clear distinction from the heartwood. With an interlocked grain and moderately coarse texture, Yellow Gum frequently produces a visually appealing fiddleback figure, making it a unique choice for projects where both strength and aesthetics are valued.

Common Applications of Yellow Gum Timber

Yellow Gum is prized for its hardness and durability, making it ideal for heavy construction. Its uses include posts, wharfage, bridgework, sleepers, and fencing. Though too dense for cabinetry, it is an excellent fuelwood, producing stable coals with minimal sparks. Additionally, Yellow Gum is popular in landscaping, where its long-lasting flowers and ability to serve as a windbreak make it valuable for gardens and natural screens.

Workability of Yellow Gum Timber

Yellow Gum’s density and hardness make it challenging to work. Pre-boring is essential for fixings, and cutter angles on planes may need adjustment. While the timber sands and polishes to a high-quality finish, it is best to glue immediately after dressing for optimal adhesion. Yellow Gum accepts preservative treatments well, enhancing its longevity in outdoor applications.

Durability of Yellow Gum Timber

Class 2 in durability for both in-ground and above-ground applications, Yellow Gum heartwood is resistant to termites. However, its sapwood is vulnerable to Lyctid borer. This high-density timber, drying to approximately 1000 kg/m³, is ideal for projects requiring long-lasting, robust material.

Origin and Availability of Yellow Gum Timber

Kosny Timber sources Yellow Gum from native forests in western Victoria and southern South Australia. Its limited but steady availability in these regions makes it a reliable choice for high-quality, durable timber.

 Very LowLowMediumHighVery High
  Check markCheck markCheck mark 
Tangential :   6.30% 
Radial :  2.80%  
Unit Movement Tangential:  0.32%  
Unit Movement Radial: 0.19%   

Very High

High

Reasonably High

Medium High

Medium

Reasonably Low

Low

Very Low

Unseasoned:

S1

S2

S3

S4

S5

S6

S7

S8

Check mark

Seasoned:

SD1

SD2

SD3

SD4

SD5

SD6

SD7

SD8

Check mark
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:

1010kg/m3

Unseasoned:

1200kg/m3

Very High

High

Reasonably High

Medium

Low

Very Low

Unseasoned:

J1

J2

J3

J4

J5

J6

Check mark

Seasoned:

JD1

JD2

JD3

JD4

JD5

JD6

Check mark
 White, yellow, pale straw to light brownPink to pink brownLight to dark redBrown, chocolate, mottled or streaky
  
Check mark
Modulus of Rupture - Unseasoned:87 MPa
Modulus of Rupture - Seasoned:111 MPa
Modulus of Elasticity - Unseasoned:11 GPa
Modulus of Elasticity - Seasoned:12 GPa
Maximum Crushing Strength - Unseasoned:44 MPa
Maximum Crushing Strength - Seasoned:67 MPa
Impact - Unseasoned:17 J
Impact - Seasoned:9 J
Toughness - Unseasoned: 
Toughness - Seasoned: 
Hardness - Unseasoned:9.1
Hardness - Seasoned:11.6
 LowModerateReasonably HighHigh
 (0 - 5 yrs)(5 - 15 yrs)(15 - 25 yrs)(more than 25 yrs)
In-Ground: Check mark 
 (0 - 7 yrs)(7 - 15 yrs)(15 - 40 yrs)(More than 40 yrs)
Above ground: Check mark 
 (0 - 20 yrs, usually < 5)(21 - 40 yrs)(41 - 64 yrs)(More than 60 yrs)
Marine Borer Resistance:    
Lyctid Borer Susceptibility:Susceptible
Lyctid Borer Susceptibility - Other: 
Termite Resistance:Resistant

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