Common Name(s): Ohia
Scientific Name: Metrosideros spp. (M. collina, M. polymorpha)
Distribution: Pacific islands
Tree Size: 65-100 ft (20-30 m) tall, 2-4 ft (.6-1.2 m) trunk diameter
Average Dried Weight: 57 lbs/ft3 (915 kg/m3)
Specific Gravity (Basic, 12% MC): .70, .91
Janka Hardness: 2,040 lbf (9,070 N)
Modulus of Rupture: 18,260 lbf/in2 (125.9 MPa)
Elastic Modulus: 2,269,000 lbf/in2 (15.65 GPa)
Crushing Strength: 9,170 lbf/in2 (63.2 MPa)
Shrinkage: Radial: 6.9%, Tangential: 12.1%, Volumetric: 19.1%, T/R Ratio: 1.8
Color/Appearance: Heartwood is a light to medium reddish brown. Grayish sapwood is not well defined.
Grain/Texture: Grain is interlocked, with a medium uniform texture and moderate natural luster.
Endgrain: Diffuse-porous; exclusively solitary; medium to large pores in no specific arrangement, moderately numerous; parenchyma not visible; narrow rays, spacing fairly close.
Rot Resistance: Rated as non-durable to perishable; good insect resistance.
Workability: Generally difficult to work on account of its high density and interlocked grain. Ohia also has a rather large movement in service, as evidenced by its high shrinkage values.
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 Ohia. See the articles Wood Allergies and Toxicity and Wood Dust Safety for more information.
Pricing/Availability: Not commonly exported. However, slabs, lumber, and smaller craft blanks can all be found on occasion. Prices are in the mid range for an imported tropical hardwood.
Sustainability: This wood species is not listed in the CITES Appendices or on the IUCN Red List of Threatened Species.
Common Uses: Furniture, flooring, and turned objects.
Comments: Ohia is a very common species in Hawaii. According to folklore, Ohi’a was the name of a warrior that was transformed into a tree.