Australian Blackwood. Tonewood database.

Acacia melanoxylon| Tonewood Profile | “Australian blackwood”

Australian blackwood

Tonewoods Database

All pictures – Click to enlarge!
Please email with any corrections/ additional info
We aim to keep each profile as complete as possible & your help is appreciated!

Quick Facts
Scientific name: Acacia melanoxylon
Trade names: Australian blackwood/ Black Acacia
Janka: 1100
Uses: Back & sides, drop tops, veneer
RIYL: Koa, Mahogany
Bling factor: Can be very highly figured.
Availability: Limited but steady
CITES status: Not listed. No restrictions

Note: (RIYL) Recommended If You Like
Bling factor rated out of a maximum of 10, based on the most highly figured sets we have seen.

[Ed.- read more about this and other Australian Tonewoods in Jack Spira’s article on Australian Tonewood here. ]

Natural History

Australian Blackwood is a fast growing evergreen tree wiith a native range in eastern Australia. It can age to 50 years and attains heights of 45m in the cooler rainforest climates of Tasmania but can tolerate urban, poor soil and water conditions very well.

It is an important horticultural as well as timber species in Australia but is known to be an invasive one in others. .

Status

J.Spira GuitarJack Spira Australian Blackwood A highly figured Australian Blackwood set on a Spira Guitar.

Within it’s native range, Australian Blackwood is widely exploited for it’s timber. The older, figured logs are now rarer but a good supply of the younger trees will continue for time to come. It has been planted as an ornamental as well as a timber species but has several draw backs.

1. It often damages undergoing piping and paving
2. It can invade local habits and force out native species.
Wikipedia writes:”It is a declared noxious weed species in South Africa. It was also recently listed by the California Invasive Plant Council (Cal-IPC) as an invasive weed that may cause limited impact (Knapp 2003).”

Physical properties

The heartwood is golden-brown taking on a glow when finished. It can display fiddleback as well as colour variations. Australian Blackwood has a Janka rating of 1270 and a Specific Gravity around 0.6.

As a tonewood…

Melbourne based luthier, Jack Spira says:

“It bends very well, although care is needed with the highly figured boards. Its stable enough to be reliable in service. I’ve not found it to be super stable though, so I’d say its important to get it well quarter sawn, and I tend to avoid using it for necks.”

Subjective tone…

I feel that the tone is very very similar to Koa, which a woody, open tone somewhere between mahogany and rosewood.

Jack Spira again:” How it sounds is a very subjective thing! To my ear, I think it tends to have a fair few high overtones, giving it a dry, sometimes reedy or breathy sound if that makes sense.”

Availability

Figured examples are getting rarer and hence more expensive, but supplies of younger growth look to be good for the near future.

Tonewoods Database

Links:
ASPAG
http://asgap.org.au/eregn.html
Jack Spirka http://www.jackspiraguitars.com/
Special thanks to Jack Spira for his time, data and pictures

References:
Alexander Rule “Forests of Australia”
Wikipedia


©Terence Tan.
Pictures copyright individual holders.

Any infringement of copyright is entirely unintentional. Any copyright issues should be address to: writers@guitarbench.com. We will attempt to resolve these issues quickly.

Share