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. Mora is used within its native range .

  1. General Details

    Origin :
    Northeastern South America (primarily Guyana and Suriname)

    Color or 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.

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

  2. Technical Info

    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