Collection: Broad-leaved Tea Tree

Broad-leaved tea tree, a larger member of the genus Melaleuca, has been used historically by Indigenous Australians for crafting dugout canoes. Its timber is known for its versatility and strength, with applications ranging from railway sleepers to unique decorative uses. Native to northern New South Wales, Queensland, the Northern Territory, and Western Australia, this species is occasionally imported from Papua New Guinea, Indonesia, and Malaysia.

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Appearance of Broad-Leaved Tea Tree Timber

The heartwood of broad-leaved tea tree timber is a warm pinkish-brown, while the sapwood is distinctly paler. Its grain is often interlocked, providing visual interest, and it features a fine, even texture.

Applications of Broad-Leaved Tea Tree Timber

Broad-leaved tea tree has a wide range of applications. Historically, its timber has been used for railway sleepers, fence posts, and mine props. It is a popular choice in general construction, flooring, and for crafting boat knees, where tree branches are cut to match natural shapes. Oyster rack structural members are sometimes made with bark intact, adding a rustic charm.

The bark of the broad-leaved tea tree finds unique uses such as lining fernery baskets, creating intricate bark paintings, and making cork for infants' pillows and mattresses. These cork materials are breathable, washable, and sterilizable, offering safety and practicality. Additionally, small stems with bark intact are used for decorative fencing.

Workability of Broad-Leaved Tea Tree Timber

The timber of broad-leaved tea tree is durable but tends to dull cutting tools. Standard bonding techniques work well for gluing, and with careful preparation, it can be used effectively in various applications.

Origin and Availability of Broad-Leaved Tea Tree Timber

Broad-leaved tea tree is native to northern New South Wales, Queensland, the Northern Territory, and Western Australia. Small quantities are imported into Australia from Papua New Guinea, Indonesia, and Malaysia. Its availability is somewhat limited, often sourced for specific uses due to its unique characteristics.

 Very LowLowMediumHighVery High
  Check markCheck markCheck mark 
Tangential :  4.50%  
Radial :   3.30% 
Unit Movement Tangential: 0.27%   
Unit Movement Radial:   0.26% 

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:F14F11F8F7F5
Seasoned:F22F17F14F11F8
Seasoned:

 

745kg/m3

 

Unseasoned:

 

 

 

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:82 MPa
Modulus of Rupture - Seasoned:97 MPa
Modulus of Elasticity - Unseasoned:9.2 GPa
Modulus of Elasticity - Seasoned:13 GPa
Maximum Crushing Strength - Unseasoned:41 MPa
Maximum Crushing Strength - Seasoned:53 MPa
Impact - Unseasoned:14 J
Impact - Seasoned:11 J
Toughness - Unseasoned: 
Toughness - Seasoned: 
Hardness - Unseasoned:6.8
Hardness - Seasoned:7.3
 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: Check mark  
Lyctid Borer Susceptibility:Susceptible
Lyctid Borer Susceptibility - Other: 
Termite Resistance: 
1 - non-combustible2 - reasonably non-combustible3 - slightly combustible4 - combustible

Fire Properties Group
Number:

Group Number - Other:

3 if used on MDF or particleboard ≥12mm; veneer thickness 0.6-0.85mm

Average Specific Extinction Area:

<250

Bushfire Resistance:

BAL 12.5 and 19 – All AS3959 required applications