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 Low | Low | Medium | High | Very High | |
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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 |
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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: | F22 | F17 | F14 | F11 | F8 |
Seasoned: |
745kg/m3
|
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Unseasoned: |
|
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: | 82 MPa |
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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 |
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: | Susceptible |
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Lyctid Borer Susceptibility - Other: | |
Termite Resistance: |
1 - non-combustible | 2 - reasonably non-combustible | 3 - slightly combustible | 4 - combustible | |
Fire Properties Group |
Group Number - Other: | 3 if used on MDF or particleboard ≥12mm; veneer thickness 0.6-0.85mm |
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Average Specific Extinction Area: | <250 |
Bushfire Resistance: | BAL 12.5 and 19 – All AS3959 required applications |