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Tasmanian Oak is grown extensively throughout Tasmania it comprises about 95% of hardwood produced in Tasmania.
Tasmanian Oak is the name used for three almost identical species of eucalypt hardwoods that are normally marketed collectively. E. delegatensis occurs at higher altitudes, while E. regnans is found in wetter sites (and rainforest margins). E, obliqua has a wide distribution, occurring in wet forests but also extending into drier areas.
Eucalypts are light demanding and grow best where they are not overshadowed. Regeneration occurs after fire, and seedlings establish best on bare mineral soil in the absence of leaf litter. In Tasmania, eucalypts may live for 400 years or more and regularly attain a height of 70m; some individuals have been recorded as reaching 100m. Old growth trees may be 3-4m or more in diameter.
Over 1 million hectares of eucalypt forest on public land are managed for sustainable multiple uses that include tourism, recreation, timber production, and conservation. There are also 2.7 million hectares of land secured in dedicated reserves in which logging is not permitted. These reserves comprise 40% of the area of the state. A substantial area of forested land is owned privately and managed for its timber production. Approximately 500,000m³ of logs are sawn each year.
Tasmanian Hardwood is quarter sawn giving the timber outstanding strength and stability characteristics.
| Specie Tasmanian Oak |
Colouring Tasmanian Oak is light in colour, varying from straw to reddish brown
with intermediate shades of cream to pink.
Other Botanical Name Eucalyptus delegatensis, E. obliqua and E. regnans
Other Common Name Australian Ash
Workability Tasmanian Oak is a warm, dense and resilient hardwood. It works
extremely well and produces an excellent finish. It can be used in all
forms of construction, furniture; home fit out, particularly flooring. It
has very good staining qualities to match with other timbers.
Wood Density Green - 1000kg/m³
Dry - 700 kg/m³
Hardness / Janka 5.7: Seasoned
Durability Class 3 & 4 (AS 1604). When used for exterior applications it should be
painted or given a protective coating.
Strength Group Seasoned SD3 and SD4, unseasoned S3 and S4
Movement Between 25% and 5% MC, radial movement is approximately 0.23%
per 1% MC Change; tangential movement about 0.36% per 1% MC
change
Common name for individual species and Janka rating:
E. Obliqua = messamate stringybark - 7.1
E. Delegatensis = alpine ash - 4 |
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