Timber Species - Tasmanian Oak

Tasmanian Oak (Eucalyptus delegatensis / Eucalyptus regnans / Eucalyptus obliqua)

Tasmanian Oak is a combination of three Eucalypt species commonly found in Tasmania. Together they produce a blend of beautiful colouring from pale cream to pink and reddish-brown. Tasmanian Oak logs are quarter sawn to produce an extremely straight and even grain.


Physical Properties

Physical Properties

Dry Density: 620 to 780 kg/m³

Janka Dry Hardness: 5.5 kN

The Janka rating is the hardness level given to each species. The higher the number, the greater the hardness.

The natural colour variation within a timber species is normal and one of its most appealing attributes. The species samples shown here are indicative only and do not necessarily show the colour variation that can be naturally found in each species. It is recommended that large samples of the species be viewed in a timber flooring showroom when deciding on the species for a new timber floor.


Properties

Species Name
Botanical Name

Colour Range

Tasmaian Oak
Eucalyptus delegatensis, E. obliqua & E. regnans
Blonde

Janka (Hardness) Rating - Dry

4.9

Natural Durability Class
In-ground contact
Outside above ground contact


4
3

Density (kg/m3)
Unseasoned (Green)
Seasoned (Dry)


1050
650

Strength Group
Unseasoned (Green)
Seasoned (Dry)


S4
SD4

Joint Group
Unseasoned (Green)
Seasoned (Dry)


J3
JD3

Fire Indices
Spread-of-Flame Index
Smoke-Developed Index
Critical Radiant Flux
Smoke Development Rate
Group Number
Naturally bushfire-resisting Timber


8
3
>2.2 and <4.5
<750
3
unknown

Tangential Shrinkage %

13.3

Toughness (Nm)
Naturally Unseasoned
(Green)
Seasoned (Dried)



13
15

Naturally Termite Resistant
to AS3660
R = Resistant
NR = Non resistant

NR

Naturally Lyctus Susceptible
S = Susceptible
NS = Non susceptible

S


>Click here to view the species photo gallery



Tasmanian Oak