Variations within species and grades: High degree of color variability.
Hardness (Janka): 1375; 6% harder than Northern red oak.
Dimensional Stability: Excellent (change coefficient .00162; 56% more stable than red oak). However, actual installations have demonstrated significant movement in use.
Sawing/Machining: Good machining qualities.
Sanding: Sands satisfactorily.
Nailing: Can be brittle (like Brazilian cherry); splits easily.
Finishing: No known problems.
Comments: Respiratory allergic potential.
Information is from The National Wood Flooring Association
"Wood Species Used in Wood Flooring"