The pale yellow sapwood is sharply demarcated from the heartwood. Wide pale yellow-brown sapwood is clearly demarcated from heartwood. Tamarind timber consists of hard, dark red heartwood and softer, yellowish sapwood. The wood is bicolor, with salmon pink heartwood and yellowish white sapwood. The heartwood is a reddish brown colour and much darker than the sapwood. Heartwood is usually darker in colour than the sapwood. The heartwood is reddish-brown, and the sapwood is lighter in color. "Acacia mangium" trees produce sapwood and heartwood. The trunk consists of five main parts&colon; the bark, inner bark, cambium, sapwood, and heartwood. This gives wood with almost only sapwood and no heartwood. It has the unusual property of having less dense heartwood than sapwood. The heartwood resists compression and the outer sapwood performs better in tension. This may or may not correspond to heartwood and sapwood. Only the heartwood and sapwood are useful for making pulp. The sapwood is reddish white and sharply differentiated.