Collection: Tasmanian Oak

Tasmanian oak is a collective name for three closely related species of eucalypt hardwoods: Eucalyptus delegatensis (alpine ash), Eucalyptus regnans (mountain ash), and Eucalyptus obliqua (messmate). These species are native to Tasmania and are renowned for their warm, dense, and resilient properties, making them a preferred choice for various applications. With excellent workability and finishing qualities, Tasmanian oak is highly versatile and used across construction, interior design, and furniture making. The timber is also valued for its fibre, which is used in reconstituted board and high-quality paper production.

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Appearance of Tasmanian Oak Timber

Tasmanian oak is light in colour, ranging from straw to reddish brown, with intermediate shades of cream to pink. Its neutral tones make it a popular choice for interiors, as it readily accepts stains and finishes, allowing for easy matching with other materials and furnishings. The timber’s consistent grain and smooth texture contribute to its aesthetic appeal, particularly in high-end joinery and furniture.

Applications of Tasmanian Oak Timber

Tasmanian oak is well-suited for protected structural applications, such as timber framing, but it is most commonly used for interior purposes. Flooring, paneling, and furniture are popular uses, as are high-end joinery applications. Beyond construction and interior design, Tasmanian oak is used for agricultural implements, oars, cooperage, boxes, crates, paper pulp, and plywood manufacturing. Its adaptability and attractive finish make it a staple in both residential and commercial projects.

Workability of Tasmanian Oak Timber

Tasmanian oak is a strong and stable timber, offering excellent all-around workability. It planes, sands, and finishes well, and readily accepts stains and polishes, allowing for a superior finish. The timber is easy to glue and is particularly suitable for steam bending, making it ideal for intricate furniture designs and internal applications. While it is not as durable for external uses, its workability and aesthetic qualities make it a popular choice for interiors.

Durability of Tasmanian Oak Timber

Tasmanian oak has low to moderate durability and is best suited to indoor applications or protected environments. Unlike Victorian ash, it is susceptible to lyctid borer attack, so appropriate care should be taken when used in susceptible areas.

Origin and Availability of Tasmanian Oak Timber

Tasmanian oak is sourced from native forests across Tasmania and is marketed nationally. In Victoria and New South Wales, it is sometimes referred to as Victorian ash, though Tasmanian oak includes messmate, resulting in a wider colour range. It is readily available across Australia in various forms, including sawn timber, veneers, and engineered products.

Tasmanian oak’s versatility, attractive appearance, and excellent workability have established it as a top choice for a wide range of interior and construction applications, making it a staple in Australian timber markets.

 Very LowLowMediumHighVery High
   
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Tangential :    13.30%
Radial :    6.60%
Unit Movement Tangential:   0.36% 
Unit Movement Radial:  0.23%  
 Very HighHighReasonably HighMedium HighMediumReasonably LowLowVery Low
Unseasoned:S1S2S3S4S5S6S7S8
   
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Seasoned:SD1SD2SD3SD4SD5SD6SD7SD8
   
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 Structural
No. 1
Structural
No. 2
Structural
No. 3
Structural
No. 4
Structural
No. 5
Unseasoned:F14F11F8F7F5
Seasoned:F22F17F14F11F8
Seasoned:650kg/m3
Unseasoned:1050kg/m3
 Very HighHighReasonably HighMediumLowVery Low
Unseasoned:J1J2J3J4J5J6
  
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Seasoned:JD1JD2JD3JD4JD5JD6
  
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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:63 MPa
Modulus of Rupture - Seasoned:110 MPa
Modulus of Elasticity - Unseasoned:13 GPa
Modulus of Elasticity - Seasoned:17 GPa
Maximum Crushing Strength - Unseasoned:30 MPa
Maximum Crushing Strength - Seasoned:63 MPa
Impact - Unseasoned:14 J
Impact - Seasoned:21 J
Toughness - Unseasoned:Medium - 15 - 24 Nm
Toughness - Seasoned:Medium - 15 - 24 Nm
Hardness - Unseasoned:3.4
Hardness - Seasoned:4.9
 LowModerateReasonably HighHigh
 (0 - 5 yrs)(5 - 15 yrs)(15 - 25 yrs)(more than 25 yrs)
In-Ground:
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 (0 - 7 yrs)(7 - 15 yrs)(15 - 40 yrs)(More than 40 yrs)
Above ground: 
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 (0 - 20 yrs, usually < 5)(21 - 40 yrs)(41 - 64 yrs)(More than 60 yrs)
Marine Borer Resistance:
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Lyctid Borer Susceptibility: 
Lyctid Borer Susceptibility - Other:Sapwood is generally susceptible. Tasmanian Oak is usually sold free of sapwood.
Termite Resistance:Not Resistant

Critical Radiance Flux - Lower:

>2.2 and <4.5

Critical Radiance Flux - Higher:

>2.2 and <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:

Not tested