Turpentine. Hardwood Species Specification Data

Timber Species: Turpentine (Syncarpia glomulifera)

Turpentine

Native to New South Wales and Greenland, the turpentine tree is, strangely enough, not used as a source for turpentine oil – it simply shares a name thanks to the smell of turpentine released when its leaves are crushed. Reaching as high as 60 meters and routinely growing on heavier soils, turpentine is a large, straight-trunked tree with a trunk diameter that can approach 1.5 meters. Its thick bark is fibrous and dark brown with deep vertical furrows, and the tree produces cream-colored flowers from August through December.

Thought to be able to live for up to 500 years, turpentine trees are popular with pollinators like native and European honeybees, the grey flying fox, the little red flying fox, and bird species such as the noisy miner and rainbow lorikeet. Turpentine commonly grows alongside other popular timber trees such as the grey ironbark, the tallowwood, the brush box, the spotted gum, and others.

Turpentine timber is highly resistant to termites and marine invertebrates, incredibly durable thanks to its Janka hardness rating of 12, and is highly resistant to fire. Hardy and adaptable, turpentine trees make for excellent shade in park settings, and the color of its timber – which vacillates from deep chocolate brown tones to pale to dark reddish browns. Its coarse yet even texture and straight grain makes it ideal for solid timber flooring and parquetry, and its extreme durability makes it a natural for decking as well.

 

Physical Properties

Dry Density:  930 kg/m³

Janka Hardness: 12 kN

These properties are only a guide, as timber is a natural product there will be variations within any species. The Janka Dry Hardness rating measures the hardness of the wood. The higher the number the harder the wood.

 Technical Properties of Turpentine

Species Name

Turpentine

Botanical Name

Botanical Name

Syncarpia glomulifera

 

 

 

 

Colour Range

Reds

Janka Hardness

Janka (Hardness) Rating - Dry

12

Natural Durability
Natural Durability Class

In-ground contact
Outside above ground contact

-

2

1

Timber Density
Density (kg/m3)

Unseasoned (Green)
Seasoned (Dry)

-
1130
940

Strength Group

Strength Group

Unseasoned (Green)
Seasoned (Dry)

-
S3
SD3

Joint Group
Joint Group

Unseasoned (Green)
Seasoned (Dry)

-
J2
JD2

Fire Indices
Fire Indices

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

-
6

3

>2.2 to <4.5
<750
3
Yes

Tangential Shrikage
Tangential Shrinkage %

13

Timber Toughness

Toughness (Nm)

Naturally Unseasoned(Green)
Seasoned (Dried)

-

14

 9.5

Termite Resistant

Naturally Termite Resistant to AS3660

R = Resistant
NR = Non resistant

RESISTANT

Lyctu Susceptible

Naturally Lyctus Susceptible

S = Susceptible
NS = Non susceptible

 NON SUSCEPTIBLE

 Australian Hardwood Timber Species | Victorian Ash