NAICS Code 33131 — Alumina and Aluminum Production and Processing

NAICS Industry in the official 2022 North American Industry Classification System (U.S. Census Bureau). It contains 4 direct sub-codes.

Code	33131
Title	Alumina and Aluminum Production and Processing
Level	NAICS Industry (5-digit)
Edition	NAICS 2022 edition

Official definition (2022 NAICS)

This industry comprises establishments primarily engaged in one or more of the following: (1) refining alumina; (2) making (i.e., the primary production) aluminum from alumina; (3) recovering aluminum from scrap or dross; (4) alloying purchased aluminum; and (5) manufacturing aluminum primary forms (e.g., bar, foil, pipe, plate, rod, sheet, tube, wire).

Where 33131 sits in the hierarchy

Level	Code	Title
Sector	31-33	Manufacturing
Subsector	331	Primary Metal Manufacturing
Industry Group	3313	Alumina and Aluminum Production and Processing
NAICS Industry	33131	Alumina and Aluminum Production and Processing

Codes under 33131

Code	Title
331313	Alumina Refining and Primary Aluminum Production
331314	Secondary Smelting and Alloying of Aluminum
331315	Aluminum Sheet, Plate, and Foil Manufacturing
331318	Other Aluminum Rolling, Drawing, and Extruding

Data: official 2022 NAICS structure, descriptions and Census concordances, U.S. Census Bureau — U.S. government works in the public domain (17 U.S.C. §105). Suggested reference, not an official determination.