Shown below with water-based finish (top),
Color: In Yellow Birch (B. alleghaniensis), sapwood is creamy yellow or pale white; heartwood is light reddish brown tinged with red. In Sweet Birch (B. lenta), sapwood is light colored and heartwood is dark brown tinged with red.
Hardness (Janka): 1260 (Yellow); 2% softer than Northern Red Oak.
Sawing / Machining: Difficult to work with hand tools, but good machining qualities.
(Relative to plainsawn select Red Oak.)