Common Name: Shibadan
Scientific Name: Aspidosperma spp.
Wood Description: Shibadan, derived from Aspidosperma spp., exhibits a varied appearance. The heartwood can be yellowish, orange-brown with a waxy feeling, or vermillion to deep reddish-brown, sometimes with large pink veins. It often appears tan or orange to rose-red, potentially streaked with purple or brown, and tends to become brownish-yellow to medium brown upon exposure. The sapwood, which is yellowish and paler than the heartwood, is generally not sharply demarcated. The wood is typically fine-grained, with a fine and uniform texture, though medium texture is also reported. The grain can be straight or interlocked, or straight to irregular.
Physical Properties: Shibadan is described as a hard and strong timber. It is relatively heavy to very heavy. The air-dry weight is approximately 850 kg/m³ (53 lbs/ft³), though a density of 410 kg/m³ (12% MC) is also reported. The specific gravity averages 0.83 (air-dry) and 0.70 (green volume/oven-dry weight). The freshly cut wood and sap of Aspidosperma species can cause irritation to the eyes, nose, and throat, as well as general malaise. Sawdust contact with abraded skin can lead to local burning, vesicular eruption, muscular weakness, cramps, sweating, dry mouth, and faintness. This toxicity generally diminishes once the wood is thoroughly dry, unless organic solvents are used for polishes or dyes. The wood is somewhat slow to season, with a high risk of checking and distortion, and once dry, it is considered poorly stable in service.
Mechanical Properties: Shibadan is mechanically resistant and very hard. It is described as a hard and strong timber. Its bending strength is medium, and crushing strength is high. These properties indicate its suitability for construction work requiring strength and durability.
Uses: Shibadan is a good general-purpose wood suitable for construction work requiring strength and durability. It can be used for heavy construction, including heavy bridges, railroad ties, and house posts. It is also useful for exterior joinery, paneling, turnery, and furniture manufacturing. Other uses include industrial flooring and hydraulic works in fresh water. It is also suitable for carvings and general carpentry.