COLOR: Heartwood is yellow-brown when freshly cut, turning dark brown to
almost black with alternate layers of light and dark. Sapwood is yellowish-white and
clearly demarcated from heartwood.
GRAIN: Straight when quartersawn; coarse texture.
VARIATIONS WITHIN SPECIES AND GRADES: Moderate variations in color.
HARDNESS (JANKA): 1630; 26% harder than
Northern red oak.
DIMENSIONAL STABILITY: Excellent (change coefficient .00201; 46% more
stable than red oak). However, actual installations have demonstrated significant movement
SAWING AND MACHINING: Difficult due to rapid dulling of tools; carbide
SANDING: Sands satisfactorily.
NAILING: Good holding ability.
FINISHING: Some solvent-based stains do not dry well.
COMMENTS: Dermatological and respiratory allergic
(relative to plainsawn select red oak)