Below we present information on the types of establishments to which NAICS code 331313 applies, as well as their corresponding classification. This code is essential to understand the characteristics and activities of the businesses included in this category.
Description NAICS Code 331313 – Alumina Refining and Primary Aluminum Production
This U.S. industry comprises establishments primarily engaged in one or more of the following: (1) refining alumina (i.e., aluminum oxide) generally from bauxite; (2) making aluminum from alumina; and/or (3) making aluminum from alumina and rolling, drawing, extruding, or casting the aluminum they make into primary forms. Establishments in this industry may make primary aluminum or aluminum-based alloys from alumina.
NAICS code 331313 includes:
- Alumina refining
- Aluminum alloys made from bauxite or alumina producing primary aluminum and manufacturing
- Aluminum ingot and other primary aluminum production shapes made from bauxite or alumina
- Aluminum oxide refining
- Aluminum producing from alumina
- Aluminum shapes (e.g., bar, ingot, rod, sheet) made by producing primary aluminum and manufacturing
- Extrusion ingot, primary aluminum, manufacturing
- Ingot, primary aluminum, manufacturing
- Primary aluminum production and manufacturing aluminum alloys
- Primary aluminum production and manufacturing aluminum shapes (e.g., bar, ingot, rod, sheet)
- Primary refining of aluminum
- Primary smelting of aluminum
- Refining aluminum, primary
- Slab, primary aluminum, manufacturing
NAICS Code 331313 does not include the following references:
- Manufacturing aluminum oxide abrasives and refractories–are classified in Subsector 327, Nonmetallic Mineral Product Manufacturing; and
- Recovering aluminum from scrap or alloying purchased aluminum–are classified in U.S. Industry 331314, Secondary Smelting and Alloying of Aluminum.
