Common Name: Washiba
Scientific Name: Handroanthus spp.
Wood Description: Washiba, identified as Handroanthus spp. (including Tabebuia Ipe), is a highly durable tropical hardwood. The wood is dark brown, occasionally streaked black. It has a fine texture and a grain that is straight to irregular, or interlocked. It is cold to the touch. The heartwood is distinct from the sapwood, which is olive brown to black, and contains large quantities of lapachol. The sapwood is lighter-colored.
Physical Properties: Washiba is a very hard and strong wood. It is among the hardest and heaviest known woods. When air-dry, the timber weighs 60-80 lbs/ft³. Its density at 12% moisture content is 1040 kg/m². The wood is very heavy. It is known for its high resistance to moisture. Washiba also has a “Class A” fire rating, similar to steel and concrete, providing significant fire resistance. It seasons slowly but with a low risk of checking or distortion, and once dry, it is moderately stable in service.
Mechanical Properties: Washiba possesses excellent mechanical properties. It is very hard and strong, and resistant to cross strain. It is elastic. These properties contribute to its classification as one of the most durable hardwoods.
Uses: Washiba is a highly versatile and durable timber, particularly suited for outdoor applications. It is commonly used for industrial and parquet flooring, outdoor decking, bridges, house framing, sleepers , tool handles, rollers, walking sticks, and fishing rods. Its strength and durability also make it suitable for heavy construction, railway sleepers, hydraulic works, posts and poles, turnery, musical instruments, and veneer. It is increasingly popular as a decking material due to its insect resistance and durability.