Common Name(s): Yellowheart, Pau Amarello

Scientific Name: Euxylophora paraensis

Distribution: Brazil

Tree Size: 100-130 ft (30-40 m) tall, 3-5 ft (1-1.5 m) trunk diameter

Average Dried Weight: 52 lbs/ft3 (825 kg/m3)

Specific Gravity (Basic, 12% MC): .67, .83

Janka Hardness: 1,790 lbf (7,950 N)

Modulus of Rupture: 16,810 lbf/in2 (115.9 MPa)

Elastic Modulus: 2,413,000 lbf/in2 (16.64 GPa)

Crushing Strength: 10,080 lbf/in2 (69.5 MPa)

Shrinkage: Radial: 5.6%, Tangential: 6.7%, Volumetric: 12.0%, T/R Ratio: 1.2

Color/Appearance: Heartwood color ranges from pale to golden yellow, darkening only slightly with age. Sapwood is a pale yellow/white.

Grain/Texture: Grain is usually straight, though some figured pieces may have wavy or interlocked grain. Fine uniform texture and a naturally high luster.

Endgrain: Diffuse-porous; large pores in no specific arrangement, few; solitary and radial multiples of 2-3; heartwood deposits occasionally present; growth rings indistinct; narrow to medium rays visible without lens, normal spacing; parenchyma not visible with lens.

Rot Resistance: Rated as moderately durable in decay resistance, with mixed reports on its resistance to insect attacks.

Workability: Yellowheart is normally easy to work with hand or machine tools, though it can be more difficult if interlocked or figured grain is present. Yellowheart also has a moderate blunting effect on cutters. Glues and finishes well.

Odor: Yellowheart has a mild, unpleasant smell when being worked.

Allergies/Toxicity: Yellowheart has been reported to cause skin irritation in some people. See the articles Wood Allergies and Toxicity and Wood Dust Safety for more information.

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