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’).
|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|
|Modulus of rupture (MPa) (dry)||99|
|Modulus of elasticity (GPa) (dry)||13|
|Hardness (Janka) (kN)||6|
|Sapwood Lyctid Susceptible||Yes|
|Resistance to split (nailing)||Good|
|Resistance to split (screwing)||Good|
|Joint Design Strength (JD)||3|
|Bushfire resistance (BAL) (door and window joinery only)||12.5 and 19|
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.