Black Walnut slabs offer distinct advantages and disadvantages for woodworking applications. Advantages include their rich, dark coloration, durability, and aesthetic appeal, making them suitable for high-end furniture and cabinetry. They are also naturally resistant to decay and insects, enhancing longevity. Disadvantages involve higher costs compared to softer woods, potential splitting during drying if not properly kiln-dried, and limited availability in large slab sizes.

The durability of Black Walnut slabs stems from its high density and Janka hardness of approximately 1,010 pounds per square inch (psi), which exceeds many domestic hardwoods like ash (1,310 psi) but is lower than oak (1,360 psi). This hardness contributes to resistance against wear, though it is not the hardest commercial wood. The rich, dark brown hue and consistent grain patterns are prized in interior design, with a 2022 survey by the National Wood Association showing 68% of high-end designers prefer Black Walnut for its visual impact. However, the cost is a significant drawback, averaging $15–$25 per board foot, 20–30% more expensive than red oak. Limited availability, driven by low regeneration rates and competition from softer woods like poplar, exacerbates cost issues. The USDA Forest Service notes that Black Walnut’s natural range has decreased by 50% since the 1800s due to urbanization and agriculture, restricting supply. Splitting risks, though mitigated by kiln drying, remain a concern. A 2019 study by the Forest Products Laboratory found that improper drying practices caused 12–15% of Black Walnut slab failures, emphasizing the need for controlled moisture levels (8–12%). Despite these challenges, its sustainability as a native species and alignment with green building trends (Backlog, 2023) sustain demand, though buyers must weigh costs against long-term durability and aesthetic value.