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Pilularis Blackbutt

ITI NZ

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 are prominent on dressed longitudinal surfaces.
Details
Specifications

Botanical Name
Eucalyptus Pilulariszz

Origin
South Eastern Australia

Scope of use

Interior

  • Furniture
  • Flooring
  • Mouldings 

Exterior

  • Structure
  • Furniture
  • Doors/Windows
  • Heavy Construction
  • Wall/Cladding
  • Mouldings
Features

Engineering
As sawn or round timber in wharf and bridge construction, railway sleepers, cross-arms, poles, piles, and 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.

Basic Info

Durability In Ground Moderately Durable

Durability Above Ground Very Durable 

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

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 

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

Overview

Certifications Available
PEFC/40-31-26 Promoting Sustainable Forest Management

Working Qualities
Care needs to be taken when drying as the 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.

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About the
Seller

ITI NZ, formerly known as ITI Timspec, began as Timspec, a specialist timber wholesaler committed to providing quality timber products with reliable service, value, visuals and versatility. In March 2019, Timspec Ltd was acquired by ITI NZ Ltd, becoming ITI Timspec, before later rebranding to ITI NZ Ltd.

As part of the wider ITI Group, ITI NZ continues to grow its product range and service offering across New Zealand. The acquisitions of Rosenfeld Kidson and Hermpac have further strengthened the business by adding respected industry knowledge, trusted timber brands and a wider range of premium timber solutions.

These acquisitions have also helped expand our offering across cladding, cedar products, flashings, external corners and related timber accessories, allowing us to support architects, builders and merchants with a more complete solution.

ITI NZ sources timber from trusted mills and suppliers around the world and works hard to provide quality products, reliable service and strong relationships across the building industry.

Verified ArchiPro Member10 years · Since 2016