Stringybark Hardwood Timber Species Specification.

Timber Species: Stringybark (Blend of Stringybark species)

Stringybark

A collection of different blondewood species, stringybark varietals are often found in the Northern Territory. While heights can vary considerably, many stringybark species top out at around 45 meters tall and features bark that has been described as tesselated, rough, and, well, stringy – hence the common name of this group of tree species.

Stringybark as a species group is rather isolated, having no close relatives when it comes to other tree species in Australia. Most commonly growing in woodlands characterized by high levels of moisture, these varietals are often found in tropical savannah woodlands, surrounded by a number of different cypress and eucalyptus species growing in dissected sandstone, clay, or sandy soil.

As a timber, stringybark has a moderately fine texture and has a notably straight grain. With its pale yellow hues that skew towards light brown and gold, this blondewood blend brings light and airy feelings into any location when used as flooring.

Stringybark has a Janka hardness score of 8, making it a middle-of-the-road timber that’s ideal for not just solid timber flooring but for parquetry and decking as well. This is supported by its moderate-to-low density of 750 kg/m³ – not quite dense enough for being used in engineered wood, but still robust and resilient enough to be a popular choice inside and out for anyone looking for a bright hardwood accent.

 

Physical Properties

Dry Density:  950 kg/m³

Janka Hardness: 11 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 Stringybark

Species Name

Stringybark

Botanical Name

Botanical Name

Blend a Stringybark species
 

 


Colour Range

Blonde

Janka Hardness

Janka (Hardness) Rating - Dry

8

Natural Durability
Natural Durability Class

In-ground contact
Outside above ground contact

-

3
3

Timber Density
Density (kg/m3)

Unseasoned (Green)
Seasoned (Dry)

-
1000
750

Strength Group

Strength Group

Unseasoned (Green)
Seasoned (Dry)

-
S5
SD5

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

-
-
-
-
-
-
Unknown

Tangential Shrikage
Tangential Shrinkage %

6.1

Timber Toughness

Toughness (Nm)

Naturally Unseasoned(Green)
Seasoned (Dried)

-

15

 

Termite Resistant

Naturally Termite Resistant to AS3660

R = Resistant
NR = Non resistant

RESISTANT

Lyctu Susceptible

Naturally Lyctus Susceptible

S = Susceptible
NS = Non susceptible

 SUSCEPTIBLE

 Australian Hardwood Timber Species | Sydney Blue Gum