Mora (Mora excelsa)

Mora (Mora excelsa)

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Common Name(s): Mora

Scientific Name: Mora excelsa, M. gonggrijpii

Distribution: Northeastern South America (primarily Guyana and Suriname)

Tree Size: 100-130 ft (30-40 m) tall, 2-3 ft (.6-1.0 m) trunk diameter

Average Dried Weight: 63 lbs/ft3 (1,015 kg/m3)

Specific Gravity (Basic, 12% MC): .80, 1.01

Janka Hardness: 2,300 lbf (10,230 N)

Modulus of Rupture: 22,550 lbf/in2 (155.5 MPa)

Elastic Modulus: 2,790,000 lbf/in2 (19.24 GPa)

Crushing Strength: 11,950 lbf/in2 (82.4 MPa)

Shrinkage: Radial: 6.7%, Tangential: 9.9%, Volumetric: 17.7%, T/R Ratio: 1.5

Color/Appearance: Heartwood is light to medium reddish brown. Wide pale yellow-brown sapwood is clearly demarcated from heartwood.

Grain/Texture: Has a straight to interlocked grain, with a medium to coarse texture. Good natural luster.

Endgrain: Diffuse-porous; large pores in no specific arrangement, few; solitary and radial multiples of 2-3; heartwood deposits present; narrow rays faintly visible without lens, normal spacing; parenchyma vasicentric,lozenge, winged, confluent, and marginal.

Rot Resistance: Mora is rated as durable to very durable, and also has good resistance to insect attacks.

Workability: Pieces with interlocked grain can be difficult to work, frequently resulting in tearout during machining operations. Mora also has a pronounced blunting effect on cutting edges.

Odor: Mora can have an unpleasant and sour odor while being worked.

Allergies/Toxicity: Mora has been reported to cause respiratory irritation. See the articles Wood Allergies and Toxicity and Wood Dust Safety for more information.

Pricing/Availability: Mora is used within its native range, and is only occasionally exported. When available, prices should be  moderate for an imported hardwood.

Sustainability: This wood species is not listed in the CITES Appendices or on the IUCN Red List of Threatened Species.

Common Uses: Flooring, boatbuilding, heavy (exterior) construction, and turned objects.

Comments: Not to be confused with a striped Guatemalan wood that is also sometimes marketed as “Mora,” which is almost universally mislabeled as Maclura tinctoria. Mora excelsa can be distinguished by a more uniform and consistent color, as well as a coarser texture and an unpleasant sour odor when being worked.

Related Species:

None available.


Mora (Mora excelsa)

Mora (sanded)

Mora (sealed)

Mora (sealed)

Mora (endgrain)

Mora (endgrain)

Mora (endgrain 10x)

Mora (endgrain 10x)


One Comment

  1. Hoang Ly Minh May 18, 2017 at 7:48 am - Reply

    common name should be added these following names: Eastern mahogany, Nato.

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