Natural attributes - Overview

Australian blackwood is a prince among native Australian hardwoods.

Its performance properties make it an ideal appearance-grade timber (one where the surface decorative appearance is paramount).

Blackwood displays low growth stresses and minimal shrinkage; ease of drying, dressing and sanding; good in-service stability; and the ability to bend to shape, to glue well and take a high polish.

Blackwood has a dramatic colour range from golden brown to nut/dark brown, with rosy tints and occasional black streaks. The grain is straight or wavy with a natural lustre, and sometimes feature grain (fiddleback, and more rarely ‘rain drop’ and ‘birds eye’).

Species Information

Family Mimosaceae
Botanical Name Acacia melanoxylon R.Br.
Common Name  Australian Blackwood, Black Sally, Hickory, Mudgerabah, Paluma Wattle, Tasmanian Blackwood


 Key performance properties

Radial shrinkage (%) 1.5-2
Tangential shrinkage (%) 4
Density (kg/m3 dry) 665
Specific gravity 0.66
Modulus of rupture (MPa) (dry) 99
Modulus of elasticity (GPa) (dry) 13
Hardness (Janka) (kN) 6
Finish Good
Stability Excellent
Durable No
Sapwood Lyctid Susceptible Yes
Resistance to split (nailing) Good
Resistance to split (screwing) Good
Gluing Good
Machining Good
Joint Design Strength (JD) 3
Bushfire resistance (BAL) (door and window joinery only) 12.5 and 19

Common Applications

Australian blackwood is highly prized by designer-makers, architects, specifiers, joiners, carpenters and instrument makers.

Blackwood has a wide range of contemporary uses in veneer, panelling, furniture, joinery, flooring, tonewood and craft.