Eusideroxylon zwageri Teijsm. & Binn., Natuurk. Tijdschr. Ned. Ind. 25 () Eusideroxylon borneense Fern.-Vill. Salgada lauriflora Blanco. Diagnostics. Family Name: Lauraceae. Common Names: Borneo Ironwood, Billian, Ironwood , Ulin, Belian. Borneo Ironwood,Billian,Ironwood,Ulin,Belian. Record Info. Typical habitat, Habitat of E. zwageri: E. zwageri is able to grow under soil which seasonally waterlogged. Senami forest, Jambi Indonesia.
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It is an evergreen tree of up eusideroxyln 40 m tall. The bole is straight, branchless for up to 20 m but usually less, sometimes slightly fluted at the base, up to cm in diameter.
The buttresses are many, small and rounded, giving the eudideroxylon an elephant-foot lik. Generally a species of lowland primary forest. Belian or ironwood is one of the most renowned timbers of Borneo.
Indonesia has banned the export of belian and Sarawak has placed restrictions on export; Sabah and Kalimantan continue to export it. It can be found throughout the lowlands of Sabah extending into the remainder of Borneo, other Indonesian islands, and the Philippines; occasionally abundant. Tangential diameter of vessel lumina micras or less very small. Vessels per mm2 more than eusideroxylo very abundant.
Prismatic crystals in radial alignment in procumbent ray cells chambered cells. Prismatic crystals in the ray cells. Body ray Fibers with distinctly bordered pits.
The sapwood is pale yellowish. The heartwood varies from yellow-brown to reddish yellow-brown, becoming dark brown or almost black on exposure. Air seasoning is reported to be easy.
Eusideroxylon Zwageri Stock Photos & Eusideroxylon Zwageri Stock Images – Alamy
Little warping and checking are reported. Schedule suggested for Thitmin. It blunts saw-teeth fairly rapidly, owing to its hardness. The teeth should be cleaned regularly from oily deposits. Botanical Description It is an evergreen tree of up to 40 m tall. Natural Habitat Generally a species of lowland primary forest.
Natural Distribution It can be found throughout the lowlands of Sabah extending into the remainder of Borneo, other Indonesian islands, and the Philippines; occasionally abundant. Wood Macro Photo Tangential Plane. Odor Its odor resembles lemons.
Color The sapwood is pale yellowish. Grain It is straight, only occasionally interlocked. Texture The texture is from fine to medium. Luster The heartwood is somewhat lustrous. Natural Durability It is very durable and very resistant to teredos and termites attack.
Silica Content Silica Content: It is reported to contain up to 0. Resistance To Impregnation The heartwood is extremely resistant to preservative treatment. Basic Density or Specific Gravity O.
Drying Defects Ease of Drying: Actual Dry Kiln Program http: Sawing Sawmilling of this species is reportedly easy to fair.
Eusideroxylon zwageri: The official tree of Sarawak
Rotary Veneer Cutting Good veneer can be made, but it is too dense and insufficiently ornamental for this purpose. Sliced Veneer Good veneer can be made, but it is too dense and insufficiently ornamental for this purpose. Blunting Effect It blunts saw-teeth fairly rapidly, owing to its hardness.
Machining Special cutters are required. Planing Planing of this species is reported to it gives good results despite its hardness.
Eusideroxylon zwageri (billian)
Boring Too high boring speeds may cause burning of the surface. Mortising It is easy to mortise. Nailing Pre-boring is essential.
Gluing The timber is reported to require special euxideroxylon for gluing. Sanding This species is reported to be easy to sand. Exterior General 1 – Tabela de resultados de ensaios fisicos e mecanicos. Bridges 2 – 25 madeiras da amazonia de valor comercial, caracterizacao, macroscopica, usos comuns e indices qualificativos. Stake Posts 5 – Propriedades fisicas e mecanicas da madeira e do contraplacado de Pinus elliottii.
Crossties 8 – Maderas latinoamericas. General Housing 10 – Silica in Timbers. Flooring 14 – Handbook of Hardwoods. Truck Body 53 – Timbers of the New World.