White stringybark is an Australian native hardwood species. Its timber products are suitable for a wide range of applications, from general building to wharf and bridge construction, boat building, outdoor furniture and turnery.
Small-leaved Stringybark, Thin-leaved Stringybark, Wilkinson’s Stringybark, Pink Blackbutt
Eucalyptus eugenioides
![](/sites/default/files/styles/detail_image/public/Eucalyptuseugenioides.jpg?itok=AvkGTHgF)
White stringybark occurs along the coast and adjacent tablelands of New South Wales, extending north to Yarraman, Queensland, with isolated stands in the Carnarvon Range and Blackdown Tableland areas, and on elevated sites as far north as Cooktown. It is a medium-sized forest tree growing to 35 metres in height, with a stem diameter of up to one metre. The trunk is generally straight and of good form.
The heartwood of this species is light brown to pale pink in colour. Sapwood is paler but not always clearly distinguishable from the true wood. Grain is generally uniform and medium-textured, but occasional interlocking can produce attractive figure in some samples.
White stringybark is rated as a class 2 hardwood with an above ground life expectancy of up to 40 years, and an in ground life expectancy of between 15 and 25 years. It is not termite-resistant. Sapwood (but not heartwood) is readily impregnated with preservatives. White stringybark is not susceptible to lyctid borer (powder post beetle) attack.
Although White stringybark is a very hard timber (rated 1 on a 6-class scale), it machines and turns well, and is amenable to the use of standard fastenings and fittings. It readily accepts paint, stains and polish. As with most high-density species, machining and surface preparation should be done immediately prior to gluing.
The timber of this species is used across a range of applications. Sawn timber is used in wharf and bridge construction; as railway sleepers, cross-arms, poles, piles and mining timbers; and for general house framing and cladding, flooring and decking, linings and joinery. White stringybark is also used for fencing, landscaping and retaining walls. Other uses include outdoor furniture and turnery; boat, coach and carriage building; and structural plywood.
Shrinkage
Very Low | Low | Medium | High | Very High | |
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Tangential : |
10.60%
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Radial : |
5.60%
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Unit Movement Tangential: |
0.36%
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Unit Movement Radial: |
0.25%
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Strength Group
![Strength groups are given for unseasoned (S1-S7) and seasoned (SD1-SD8) timber in accordance with AS 2878. S1 and SD1 yield the highest strength and stiffness whereas S7 and SD8 yield the lowest.](/themes/custom/woodsolutions/images/tooltip.png)
Very High |
High |
Reasonably High |
Medium High |
Medium |
Reasonably Low |
Low |
Very Low |
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Unseasoned: |
S1 |
S2 |
S3 |
S4 |
S5 |
S6 |
S7 |
S8 |
|
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Seasoned: |
SD1 |
SD2 |
SD3 |
SD4 |
SD5 |
SD6 |
SD7 |
SD8 |
|
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Stress Grade
![A stress grade is defined in AS 1720 as the classification of timber for structural purposes by means of either visual or machine grading. The stress grade indicates the basic working stresses and stiffnesses to be used for structural design purposes. Measured in MPa.](/themes/custom/woodsolutions/images/tooltip.png)
Structural No. 1 |
Structural No. 2 |
Structural No. 3 |
Structural No. 4 |
Structural No. 5 |
|
Unseasoned: |
F17 |
F14 |
F11 |
F8 |
F7 |
Seasoned: |
F27 |
F22 |
F17 |
F14 |
F11 |
Density per Standard
![Seasoned density is based on moisture content of 12%. Unseasoned density is an approximation as it depends on the moisture content at the time of measurement. Measured kg/m3.](/themes/custom/woodsolutions/images/tooltip.png)
Seasoned: |
855kg/m3
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Unseasoned: |
1120kg/m3
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Joint Group
![The joint group is a classification of the strength of a species in joint design. The values are from 1 (very high strength) to 6 (very low strength).](/themes/custom/woodsolutions/images/tooltip.png)
Very High |
High |
Reasonably High |
Medium |
Low |
Very Low |
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Unseasoned: |
J1 |
J2 |
J3 |
J4 |
J5 |
J6 |
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Seasoned: |
JD1 |
JD2 |
JD3 |
JD4 |
JD5 |
JD6 |
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Colour
![The colour of seasoned heartwood can vary between species and often within a species. The information provided should be used as a general guide only. In most cases, the colour of sapwood is either a lighter shade of the heartwood or a white/cream colour.](/themes/custom/woodsolutions/images/tooltip.png)
White, yellow, pale straw to light brown | Pink to pink brown | Light to dark red | Brown, chocolate, mottled or streaky | |
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Mechanical Properties
Modulus of Rupture - Unseasoned: |
81
|
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Modulus of Rupture - Seasoned: |
136
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Modulus of Elasticity - Unseasoned: |
13.4
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Modulus of Elasticity - Seasoned: |
17
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Maximum Crushing Strength - Unseasoned: ![]() |
44
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Maximum Crushing Strength - Seasoned: |
75
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Impact - Unseasoned: |
17.4
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Impact - Seasoned: |
18.6
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Toughness - Unseasoned: |
Medium - 15 - 24 Nm
|
Toughness - Seasoned: |
Medium - 15 - 24 Nm
|
Hardness - Unseasoned: |
6.4
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Hardness - Seasoned: |
9
|
Durability
Low | Moderate | Reasonably High | High | |
(0 - 5 yrs) | (5 - 15 yrs) | (15 - 25 yrs) | (more than 25 yrs) | |
In-Ground: |
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(0 - 7 yrs) | (7 - 15 yrs) | (15 - 40 yrs) | (More than 40 yrs) | |
Above ground: |
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(0 - 20 yrs, usually < 5) | (21 - 40 yrs) | (41 - 64 yrs) | (More than 60 yrs) | |
Marine Borer Resistance: |
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Lyctid Borer Susceptibility: |
Not Susceptible |
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Lyctid Borer Susceptibility - Other: |
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Termite Resistance: |
Resistant
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Fire Properties
1 - non-combustible | 2 - reasonably non-combustible | 3 - slightly combustible | 4 - combustible | |
Fire Properties Group |
Group Number - Other: |
3 if used on MDF or particleboard ≥12mm; veneer thickness 0.6-0.85mm
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Average Specific Extinction Area: |
<250
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Bushfire Resistance: |
BAL 12.5 and 19 – All AS3959 required applications
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The heartwood of white stringybark is light brown, and occasionally pale pink in colour. Sapwood is paler in colour but not sharply differentiated. Grain is generally uniform and medium-textured, but occasional interlocking can produce attractive figure in some samples.
Timber from this species is used across a range of applications. Sawn timber is used in wharf and bridge construction; as railway sleepers, cross-arms, poles, piles and mining timbers; and for general house framing and cladding, flooring and decking, linings and joinery. It is also used for fencing, landscaping and retaining walls. Other uses include outdoor furniture and turnery; boat, coach and carriage building; and structural plywood.
White stringybark machines and turns well and can be used with standard fittings and fastenings. As with most high-density species, machining and surface preparation should be done immediately before gluing. White stringybark readily accepts paint, stains and polishes.
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