Jarrah Species Information
Top portion is finished with water-base urethane; bottom with
oil-modified polyurethane.
Appearance
Color: Heartwood is uniformly pinkish to dark red, often a
rich, dark red mahogany hue, turning a deep brownish red
with age and exposure; sapwood is pale. Frequent black streaks
with
occasional ingrown grain.
Grain: Frequently interlocked or wavy. Texture is even and
moderately coarse.
Variations within species and grades: Moderate to high color
variation.
Properties
Hardness (Janka): 1910; 48% harder than Northern red oak.
Dimensional Stability: Below average (change coefficient .00396;
7% less stable than red oak).
Durability: Dense and very strong; high resistance to wear.
Workability
Sawing/Machining: Difficult to work because of high density and
irregular grain; carbide tooling recommended.
Sanding: Sands well, but dust can stain fabric and wall treatments.
Nailing: Good holding ability.
Finishing: Red color can bleed into some finishes — a problem
when mixing species.
Comments: Resistant to termites and fungus.
|
