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    Species Information

Rock oak is a small to medium-sized tree that occurs associated with granite soils from east of Geraldton through the Wheatbelt and Great Southern regions to Esperance.

Wood description [more info]
Heartwood is a deep red, and the timber has the distinctive rays that are best displayed by quartersawing the log. Sapwood is pale white.

Wood density [more info]
Green density is about 1130 kg/m3, air-dry density about 895 kg/m3, and basic density about 720 kg/m3.

Shrinkage [more info]
Tangential and radial shrinkage are about 6.5 per cent and 3.5 per cent respectively.

Workability [more info]
CALM Timber Technology has rated working properties such as sawing, sanding and planing as good, while gluing in one trial was rated as average.

Durability [more info]
-

Strength group and properties [more info]
Green and dry strength groups are (S4) and (SD4). The brackets indicate conservative provisional ratings based on the air-dry density. The more important strength properties are given in the table below.

Property

Units

Green

Dry

Modulus of Rupture

MPa

62

94

Modulus of Elasticity

MPa

10700

14000

Max Crushing Strength

MPa

31

54

Hardness

KN

-

-

Uses [more info]
The species has considerable potential as a specialty timber.

Availability [more info]
Limited because of previous large-scale clearing in the Wheatbelt region.