AUS Blackwood (Tasmanian)

COMMON APPLICATIONS
Decking
Decking
Decking
Decking
Decking

The highly decorative hardwood of blackwood outshines almost every other timber in the range of colours which it possess. The heartwood is a rich golden brown through which there may be streaks of reddish brown or almost black. The sapwood which is a pale cream-brown, contrasting strongly with the heartwood.  Grain is usually straight but sometimes wavy, producing fiddleback figure. Blackwood is rated as moderately regrading decay resistance, though susceptible to insect attack. 

Endgrain: Diffuse-porous; large pores in no specific arrangement; few to very few; solitary and radial multiples of 2-3; narrow rays, spacing normal, can be reddish colour. 

Workability: Australian Blackwood is easily worked with both hand and machine tools, though figured wood and pieces with interlocked grain can cause tearout. Australian Blackwood turns, glues, stains, and finishes well. Responds well to steam bending.

Common uses: Veneer, furniture, cabinetry, musical instruments and wood objects. 

 

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Botanical Name: Acacia melanoxylon
Other Names: Australian Blackwood
Origin: Australia
  • Overview
  • Basic Info
  • Technical

General

Certifications Available::
PEFC
Seasoning: Dries fairly easily and without undue degrade, although there is some tendency to cupping.
Working Qualities: The timber works fairly easily but cutting edges must be kept sharpened for end grain working. A reduction of cutting angle to 20┬║ is usually beneficial in planning and moulding, particularly when curly grain is present. It can be screwed and nailed well but gluing properties are often variable. It finishes well and takes an excellent stain and polish.
Uses: Fine furniture, shop fitting, cabinets, gun stocks, musical instruments and decorative veneer.
Price (1-10): 7

Availability

Stocked: Yes

Durability

Durability In Ground: Perishable/Non Durable
Durability Above Ground: Moderately Durable

Density

Density Air Dry: 640 kg/m3

Shrinkage

Shrinkage Radial: 4 %
Shrinkage Tangental: 5 %

Stability

Stability Kiln Dry: Very Stable
Stability Green: Stable

Mechanical Properties

Modulus of Rupture: 129 MPa
Modulus of Elasticity: 14 GPa
Max Crush Strength: 14 MPa

Fire

NZAS lgnitability: 13
NZAS Flame Spread: 9
NZAS Heat Evolved: 5
NZAS Smoke Developed: 3

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