How to Identify White Oak Wood (Quercus alba)

Heartwood is a light to medium brown, commonly with an olive cast; paler sapwood is not always sharply demarcated from the heartwood. Grain is straight, with a coarse, uneven texture. End grain: Ring porous; solitary earlywood pores in two to four rows, latewood pores in radial/dendritic arrangement; vessels very large in earlywood, small in latewood; tyloses abundant; parenchyma diffuse-in-aggregates; rays of two distinct sizes, wider rays conspicuous even without magnification.

Janka hardness 1,360 lbf (side hardness: the force needed to embed a 0.444-inch steel ball to half its diameter). Specific gravity 0.68 at 12% moisture content, so a cubic foot weighs roughly 42 lb. Weight in the hand is one of the quickest checks: compare a piece of known size against a board you already know.

White oak's heartwood contains tyloses that red oak lacks (a classic field test: red oak lets air/water pass through an end-grain straw; white oak does not); ray height on face grain often exceeds 1 in. in white oak versus rarely over 1 in. in red oak; white oak also tends toward an olive cast versus red oak's reddish cast. The Red Oak page has its own details.

Distinct smell while being worked, common to most oaks; heartwood contains abundant tyloses that make it liquid-tight, unlike red oak.

Cabinetry, furniture, interior trim, flooring, boatbuilding, barrels, and veneer.

Produces good results with hand and machine tools though fairly high shrinkage gives mediocre dimensional stability (especially flat-sawn); reacts with iron when wet, causing staining; responds well to steam-bending; oak reported as a sensitizer (eye/skin irritation, asthma-like symptoms).

Photograph a freshly cut or sanded face in daylight, not a finished or stained surface, since stain hides color and finish flattens grain. Add a close-up of the end grain: cut a clean end, wet it or sand it to 220, and shoot from straight on; pore pattern and rays are the most reliable marks. Put a ruler in frame. The app suggests the likely species; confirm with the end grain and weight.