Ramin

(Gonystylus spp.)

Common Name(s): Ramin

Scientific Name: Gonystylus spp.

Distribution: Southeast Asia

Tree Size:  65-100 ft (20-30 m) tall, 2-3 ft (.6-1 m) trunk diameter

Average Dried Weight: 41 lbs/ft3 (655 kg/m3)

Specific Gravity (Basic, 12% MC): .52, .66

Janka Hardness: 1,210 lbf (5,400 N)

Modulus of Rupture: 18,180 lbf/in2 (120.9 MPa)

Elastic Modulus: 2,255,000 lbf/in2 (15.55 GPa)

Crushing Strength: 9,580 lbf/in2 (66.0 MPa)

Shrinkage: Radial: 4.6%, Tangential: 8.9%, Volumetric: 13.6%, T/R Ratio: 1.9

Color/Appearance: Tends to be a almost white to pale yellow, sometimes grayish. Sapwood and heartwood not differentiated. Prone to spalting and blue fungal staining (as in the case of the pictured sample).

Grain/Texture: Grain is straight or slightly interlocked, and usually without any notable figure or character. Texture is medium to fine, with a low surface luster.

Endgrain: Diffuse-porous; medium to very large pores in no specific arrangement, few; solitary and radial multiples of 2-3; heartwood mineral/gum deposits (amber-colored) occasionally present; narrow rays may be faintly visible without lens, fairly close spacing; parenchyma winged.

Rot Resistance: Rated as non-durable to perishable regarding decay resistance, and also susceptible to insect attacks.

Workability: Overall good working characteristics with both hand and machine tools. However, Ramin does have a tendency to splinter during cross-cutting operations. Glues, turns, and finishes well.

Odor: Has a strongly unpleasant scent while green, which mostly subsides once fully seasoned.

Allergies/Toxicity: Although severe reactions are quite uncommon, Ramin has been reported to cause eye and skin irritation, as well as other side effects such as asthma-like symptoms and increased tendency for splinters to get infected. See the articles Wood Allergies and Toxicityand Wood Dust Safetyfor more information.

Pricing/Availability: Ramin has been over-exploited in the past, and is now listed on CITES Appendix II as an endangered species(this includes the entire Gonystylus genus). Although a strong and useful wood, many suitable domestic alternatives are much more readily available. Trade of Ramin is likely to remain restricted to its natural range within southeast Asia.

Sustainability:  This wood species is in CITES Appendix II, and is on the IUCN Red List. It is listed as vulnerable due to a population reduction of over 20% in the past three generations, caused by a decline in its natural range, and exploitation.

Common Uses: Furniture, cabinetry, veneer, plywood, flooring, utility lumber, dowels, tool handles, and other turned objects.

Comments: Ramin has good working properties and outstanding strength-to-weight characteristics.

Ramin (sanded)

Ramin (sealed)

Ramin (endgrain)

Ramin (endgrain 10x)

None of the above content is our original work and all credit (and any errors or omissions) is due www.wood-database.com.
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