lpil, kwila Intsia spp.
Color: Heartwood is yellowish to orange-brown when freshly cut, turning brown or dark red-brown upon exposure.
Grain: Straight to interlocked or wavy; coarse texture.
Species & Grade Variations: Moderate to high variation in color.
Hardness (Janka): 1925; 49% harder than Northern Red Oak.
Dimensional Stability: Excellent (change coefficient .00158; 57% more stable than Red Oak). However, actual installations have demonstrated significant movement in use.
Durability: Strength is comparable to Hickory, but density is somewhat lower.
Sawing / Machining: Sawing is difficult; wood gums saw teech and dulls cutting edges; carbide tooling recommended.
Sanding: Sands satisfactorily.
Nailing: Good holding ability.
Finishing: Wood stains black in contact with ferrous metals or moisture.
Comments: High resistance to termites.
(Relative to plainsawn select Red Oak.)