Color: Heartwood is light tan to dark brown; sapwood is creamy white. Similar in appearance to white oak, but frequently more yellow.
Grain: Bold, straight, moderately open grain with occasional wavy figuring. Can have strong contrast in grain in plainsawn boards.
Variations Within Species and Grades: Sometimes confused with hickory; the zone of large pores is more distinctive in ash, similar to that of red oak.
Hardness/Janka: 1320; 20% harder than Northern red oak.
Dimensional Stability: Above average (change coefficient .00274; 26% more stable than red oak).
Durability: Elastic, hard; excellent shock resistance. Remains smooth under friction.
Sawing/Machining: Good machining qualities.
Sanding: Sands satisfactorily
Nailing: Good holding ability.
Finishing: No known problems. Stains well.
Comments: High in bending strength. Light-sensitive; strong color change upon exposure to light.