AMERICAN BLACK WALNUT

Product catalog summary

Overview of American Black Walnut

General Description:
The American Black Walnut, scientifically known as Junglans nigra L., belongs to the Juglandaceae family. The sapwood is yellowish white to light brown, while the heartwood ranges from reddish brown to dark brown. The grain is generally straight but can occasionally be wavy, with a medium texture.

Physical Properties:
- Density at 12% humidity: 610 Kg/m³ (very heavy)
- Volumetric coefficient: 0.43% (stable wood)
- Contraction ratio: 1.42% (no tendency to deform)
- Hardness (Chalais-Meudon): 3.6 (hard wood)
- Resistance to static bending: 1,010 kg/cm²
- Elasticity modulus: 116,000 kg/cm²
- Resistance to parallel compression: 523 kg/cm²
- Fire reaction class: Cfl-s1
- Thermal conductivity: 0.15 W/(mK)
- Formaldehyde emission: E1

Uses and Applications:
American Black Walnut is used for fine indoor furniture, carving, lathing, curved furniture, woodwork on openings and claddings, doors, wood flooring, wainscots, mouldings, stairs, and decorative plates.

Durability and Processing:
- Natural durability against fungi, termites, and dry wood insects is classified as durable to moderately durable.
- Sawing and processing present no problems, though drying is slow with risks of collapse and cementing.
- Gluing, nailing, and finishing are easy.
- Impregnability varies, with sapwood being impregnable and heartwood having low or non-impregnability.

Flooring Specifications:
Indoor coated wood flooring is available in formats for gluing or nailing, with dimensions ranging from 400/1600 x 90,100 or 110 x 19 mm to 500/2400 x 120 to 140 x 19 mm. The flooring contains 8 layers of coating, including 5 layers of UV-drying acrylic and water-based primers and 3 anti-scratch coats.

Standards and Quality:
The flooring meets various manufacturing and coating standards, including AITIM quality seals and UNE-EN ISO certifications for quality management, dimensional stability, geometrical characteristics, installation specifications, coating thickness, resistance to abrasion, adherence, impact, shock, scrubbing, and slip resistance.

Catalog excerpts

DATA SHEET LOPEZIPIGUEIRAS Name and family International Name Scientific Name Family Main Commercial Names AMERICAN BLACK WALNUT Junglans nigra L. Juglandaceae. American Black Walnut Description of the wood Sapwood Heartwood • Colour • Grain direction • Grain Yellowish white to light brown. Reddish brown to dark brown. Straight, although it is occasionally wavy. Medium. Technological characteristics Density at 12% humidity Dimensional stability • Volumetric coefficient • Contraction ratio • Hardness (Chalais - Meudon) • Resistance to static bending • Elasticity modulus • Resistance to parallel compression • Fire reaction class • Thermal conductivity • Formaldehyde emission LOPEZ PIGUEIRAS SOLID WOOD FLOORING Lg. de Patarroa s/n, CP 27861, Covas-Viveiro (LUGO), Tel. +34 982 561 061 [email protected] www.lopezpigueiras.com

Open the catalog to page 1

DATA SHEET AMERICAN BLACK WALNUT 5 Uses and applications Fine indoor furniture. Carving, lathing and curved furniture. Woodwork on openings and claddings, indoor: Doors, wood ﬂooring, wainscots, mouldings, stairs. Decorative plates. Natural durability Fungi Termites Durable - Moderately durable Durable - Moderately durable Biological durability Durable - Moderately durable Transformation and installation Sawing Slow; risk of collapse and cementing. Impregnable sapwood and low impregnability or non-impregnable heartwood. Our applications INDOOR COATED WOOD FLOORING • Format FOR GLUING or NAILING...

Open the catalog to page 2

DATA SHEET AMERICAN BLACK WALNUT INDOOR WOOD FLOORING MANUFACTURING STANDARDS - AITIM quality seal: 4-3-13. Wood floors. Wood flooring. - UNE-EN ISO 9001:2015: Quality Management Systems. - UNE-EN 13756:2003: Wood flooring. Terminology. - UNE-EN 13226:2009: Solid parquet elements with grooves and / or tabs. - UNE-EN 1910:2000: Determining the dimensional stability. - UNE-EN 13647:2003: Determining the geometrical characteristics. - UNE 56810:2010: Wood flooring. Installation. Specifications. - UNE-EN 14342:2006: Wood flooring. Characteristics, evaluation of conformity and marking. INDOOR WOOD...

Open the catalog to page 3

AMERICAN BLACK WALNUT

AMERICAN BLACK WALNUT

Catalog excerpts

All LOPEZ PIGUEIRAS catalogs and technical brochures