Mulberry
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Scientific Name: Morus spp. (Morus alba, M. nigra, M. rubra, etc.) Distribution: Red Mulberry is native to Eastern North America, other species are found worldwide Tree Size: 30-50 ft (10-15 m) tall, 1-1.5 ft (.3-.5 m) trunk diameter Average Dried Weight: 43 lbs/ft3 (690 kg/m3) Specific Gravity (Basic, 12% MC): .55, .69 Janka Hardness: 1,680 lbf (7,470 N) Modulus of Rupture: 11,680 lbf/in2 (80.6 MPa) Elastic Modulus: 1,352,000 lbf/in2 (9.32 GPa) Crushing Strength: 6,990 lbf/in2 (48.2 MPa) Shrinkage: Radial: 3.3%, Tangential: 6.6%, Volumetric: 10.3%, T/R Ratio: 2.0 |
Color/Appearance: Heartwood is a golden brown, darkening to a medium/reddish brown with age. Sapwood is a pale yellowish white. Overall appearance is very similar to Osage Orange.
Grain/Texture: Grain is straight, with a uniform medium texture. Good natural luster.
Endgrain: Ring-porous; large earlywood pores 2-5 rows wide, small latewood pores in clusters and tangential bands; tyloses and other gum deposits common; parenchyma vasicentric, aliform, and confluent; medium to wide rays, spacing normal.
Rot Resistance: Rated as very durable, with good insect resistance and weathering properties.
Workability: Responds well to both hand and machine tools. Turns, glues, and finishes well.
Odor: No characteristic odor.
Allergies/Toxicity: Besides the standard health risks associated with any type of wood dust, no further health reactions have been associated with Mulberry. See the articles Wood Allergies and Toxicity and Wood Dust Safety for more information.
