Location taken: Hotel Bougainvillea, San Jose, Costa Rica. Names: Astronium graveolens Jacq., Astronium balansae, Gonçalo alve Classifica...
Location taken: Hotel Bougainvillea, San Jose, Costa Rica. Names: Astronium graveolens Jacq., Astronium balansae, Gonçalo alve Classifica...
Photo by David J. Stang, CC BY-SA 4.0, via Wikimedia Commons

Wood Species

Tigerwood

Astronium spp.

Janka hardness
2170 lbf
Specific gravity
0.85
Workability
Moderate — wavy/interlocked grain; moisture-resistant nature complicates gluing

Tigerwood is the flooring-trade name for goncalo alves (Astronium spp., mainly A. fraxinifolium and A. graveolens), a Brazilian hardwood whose medium reddish-brown heartwood gets streaked dark brown to nearly black — on the boards that bother to earn the name, anyway.

Working Properties

For all its density, tigerwood only presents moderate machining challenges: wavy or interlocked grain takes a moderate toll on cutters, and its natural moisture resistance can throw a wrench into gluing. It turns and finishes well, and it's rated very durable against decay — this is a wood built to live outside.

Typical Uses

Flooring, furniture, cabinetry, and small specialty items like pool cues and knife handles.

Images

Location taken: Hotel Bougainvillea, San Jose, Costa Rica. Names: Astronium graveolens Jacq., Astronium balansae, Gonçalo alve Classifica...

Tree: Location taken: Hotel Bougainvillea, San Jose, Costa Rica. Names: Astronium graveolens Jacq., Astronium balansae, Gonçalo alve Classifica... Photo by David J. Stang, CC BY-SA 4.0, via Wikimedia Commons

Images are sourced from Wikimedia Commons under their original open licenses -- see each image's caption for its specific license and attribution.