Goncalo Alves (Astronium fraxinifolium)

Tigerwood is also commonly referred to as Brazilian Koa, Goncalo Alves, Muiracatiara or Jobillo.

Typical Specifications

average dried weight:   57 pounds per cubic foot
janka hardness:   2,170 pounds-force
modulus of rupture:   16,970 pounds-force per square inch
elastic modulus:   2,401,000 pounds-force per square inch
crushing strength:   10,770 pounds-force per square inch

Color and Durability


Heartwood is typically a medium reddish brown with irregularly spaced streaks of dark brown to black. Color tends to darken with age.


Goncalo Alves has excellent weathering properties, and is rated as very durable regarding decay resistance. It is 5.4 times harder than Pine.