Pilularis Blackbutt

COMMON APPLICATIONS
Decking
Decking
Decking
Decking
Decking
Decking
Decking
Decking
Decking

A moderate to large tree, attaining 40 to 60 m in height and 1 to 2 m in stem diameter. It has a straight slender trunk, circular in cross-section.  The bark on the lower part of the trunk is dark grey-brown in colour, fibrous and fissured. Typical smooth gum type bark occurs on branches and the uppermost part of the trunk. The heartwood is pale brown with a faint tinge of pink when freshly cut. Sometimes the sapwood is indistinguishable from the heartwood but usually it is slightly paler in colour.

Grain: Moderately coarse textured and uniform.

Texture: Open and uniform. Grain straight but occasionally slightly interlocked and in some cases it has a greasy appearance and feel.

Vessels: Medium to large in size, often arranged in oblique chains. Vessel lines prominent on dressed longitudinal surfaces. 

Uses: 

Engineering. As sawn or round timber in wharf and bridge construction, railway sleepers, cross-arms, poles, piles, mining timbers. Not recommended for poles in-ground in pole frame house construction.

Construction. As unseasoned, sawn timber in general house framing, fascia and barge boards and as seasoned dressed cladding, internal and external flooring, lining and joinery. Also in fencing, landscaping and retaining walls.

Decorative. Internal quality furniture, outdoor furniture, turnery, parquetry.

Others. Boat building (keel and framing components planking, decking), coach, vehicle and carriage building, agricultural machinery, structural plywood, hardboard.

Download Pilularis Blackbutt Information Sheet

 

 

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Botanical Name: Eucalyptus pilulariszz
Origin: southeastern Australia
  • Overview
  • Basic Info
  • Technical

General

Certifications Available::
PEFC
Working Qualities: Care needs to be taken when drying as blackbutt is prone to surface checking on the tangential surface. Blackbutt should not be re-conditioned as this will widen any surface checks. Blackbutt can be stained, painted or polished but there can be issues with painting because of its tendency to surface check. The high extractives of mature wood can cause problems with some adhesives, but this is much less of an issue with young regrowth wood. These extractives can also cause staining on painted surfaces after exposure to the weather. Blackbutt machines well but is only fair for steam bending.
Uses: Engineering. As sawn or round timber in wharf and bridge construction, railway sleepers, cross-arms, poles, piles, mining timbers. Not recommended for poles in-ground in pole frame house construction. Construction. As unseasoned, sawn timber in general house framing, fascia and barge boards and as seasoned dressed cladding, internal and external flooring, lining and joinery. Also in fencing, landscaping and retaining walls. Decorative. Internal quality furniture, outdoor furniture, turnery, parquetry. Others. Boat building (keel and framing components planking, decking), coach, vehicle and carriage building, agricultural machinery, structural plywood, hardboard.

Availability

Stocked: TBA

Durability

Durability In Ground: Moderately Durable
Durability Above Ground: Very Durable

Density

Density Air Dry: 900 kg/m3
Density Green: 1100 kg/m3

Shrinkage

Shrinkage Radial: 7.30 %
Shrinkage Tangental: 4.30 %

Mechanical Properties

Janka Hardness: 9.1 kN
Modulus of Rupture: 144 MPa
Modulus of Elasticity: 19 GPa
Max Crush Strength: 77 MPa
Strength Group unseasoned: S2
Strength Group Seasoned: SD2

Fire

NZAS lgnitability: 13
NZAS Flame Spread: 7
NZAS Heat Evolved: 3
NZAS Smoke Developed: <750

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