NAICS 2022 nationalIndustry USA Verified: Census NAICS 2022 · 2026-01-01

NAICS 331410 — Nonferrous Metal (except Aluminum) Smelting and Refining

Nonferrous Metal (except Aluminum) Smelting and Refining

NAICS 331410 is the national industry code for nonferrous metal (except aluminum) smelting and refining establishments in the United States. The Small Business Administration sets a size standard of 1,000 for this classification. It forms part of the hierarchical North American Industry Classification System maintained by the Census Bureau.

SBA: 1,000 View full SBA standard

Official Inclusions

rolling or extruding basic shapes from metal produced in the same establishment

Exclusions & Cross-References

Activities classified under other official NAICS codes:

aluminum smelting and refining (See 33131 Alumina and aluminum production and processing)
producing bullion at a mine site (See 212220 Gold and silver ore mining (CAN))
rolling, drawing, extruding and alloying purchased copper (See 331420 Copper rolling, drawing, extruding and alloying)
rolling, drawing, extruding and alloying purchased non-ferrous metals, except aluminum and copper (See 331490 Non-ferrous metal (except copper and aluminum) rolling, drawing, extruding and alloying (CAN))

Official Illustrative Examples

Primary activities officially recognized by Census Bureau / Statistics Canada:

chromium smelting and primary refining cobalt smelting and primary refining copper alloys, made in primary copper smelting and refining mills lead smelting and primary refining magnesium smelting and primary refining nickel smelting and primary refining precious metals smelting and primary refining selenium smelting and primary refining tin smelting and primary refining titanium smelting and primary refining uranium smelting and primary refining zinc smelting and primary refining

Complete Index of Activities (44 recognized activities) ▼

anodes, for electrolytic refining, copper, manufacturing

antimony smelting and primary refining

bars, made in primary copper smelting and refining mills

beryllium smelting and primary refining

bismuth smelting and primary refining

blister copper, manufacturing

cadmium smelting and primary refining

chromium smelting and primary refining

cobalt smelting and primary refining

copper alloys, made in primary copper smelting and refining mills

copper concentrates refining

copper shapes (e.g., bar, billet, ingot, plate, sheet), made in primary copper smelting and refining mills

copper smelting and primary refining

germanium smelting and primary refining

gold bullion or dore bar, produced in primary smelting and refining mills

gold smelting and primary refining

iridium smelting and primary refining

lead smelting and primary refining

magnesium smelting and primary refining

nickel smelting and primary refining

niobium smelting and primary refining

non-ferrous alloys, made in primary smelting and refining mills (except aluminum)

non-ferrous metal (except aluminum) smelting and refining

non-ferrous metals (except aluminum), smelting and primary refining

platinum smelting and primary refining

precious metals smelting and primary refining

primary refining of non-ferrous metals (except aluminum)

primary smelting of non-ferrous metals (except aluminum)

refining non-ferrous metals (except aluminum), primary

rhenium smelting and primary refining

rolling or extruding basic shapes from metal produced in the same establishment

selenium smelting and primary refining

silver smelting and primary refining

smelters, non-ferrous metals (except aluminum)

smelting of non-ferrous metals (except aluminum), primary

tantalum smelting and primary refining

tellurium smelting and primary refining

tin smelting and primary refining

tin-based alloys, made in primary smelting and refining mills (except aluminum)

titanium smelting and primary refining

tungsten smelting and primary refining

uranium smelting and primary refining

zinc smelting and primary refining

zirconium smelting and primary refining

Official data

Feature	Description
Official name	North American Industry Classification System (NAICS) 2022
Issuing authority	U.S. Census Bureau with OMB, Statistics Canada, and INEGI
Tax authority	Internal Revenue Service (IRS)
Purpose	Statistical business classification and federal contracting (SAM.gov, SBA standards)
Used in	SAM.gov registration, SBA size determinations, IRS tax classification, SEC EDGAR (via SIC crosswalk)
Active since	2022 (current edition)
Hierarchy level	Sector (2-digit)
Source	https://www.census.gov/naics/