331410 — Nonferrous Metal (except Aluminum) Smelting and Refining
Description
This industry comprises establishments primarily engaged in (1) smelting ores into nonferrous metals and/or (2) the primary refining of nonferrous metals (except aluminum) by electrolytic methods or other processes (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
Overview Facts
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 3331 - Primary Smelting and Refining of Copper (via SIC1987:3331→NAICS1997:331411→2002:331411→2007:331411→2012:331410→2017:331410→2022:331410)
- SIC 3339 - Primary Smelting and Refining of Nonferrous Metals, Except Copper and Aluminum (via SIC1987:3339→NAICS1997:331419→2002:331419→2007:331419→2012:331410→2017:331410→2022:331410)
Suggested Product Service Codes (Advisory)
The following Product Service Codes (PSCs) are advisory suggestions aligned with this NAICS code. Note: NAICS and PSC codes map to different dimensions of procurement (industry vs. product/service). There is no official binding 1:1 crosswalk.
- PSC 9650 — Nonferrous Base Metal Refinery and Intermediate Forms
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 331410 valid in 2022? ▾
Yes, 331410 is a valid 6-digit 2022 NAICS national industry code representing 'Nonferrous Metal (except Aluminum) Smelting and Refining' under Sector 31-33 in the official classification index.
What is the SBA size standard for NAICS code 331410? ▾
The Small Business Administration (SBA) has established a small business size standard of 1,000 employees for NAICS code 331410 (Nonferrous Metal (except Aluminum) Smelting and Refining), calculated based on employees.
What is the legacy SIC equivalent for NAICS 331410? ▾
According to official Census Bureau concordance tables, NAICS code 331410 (Nonferrous Metal (except Aluminum) Smelting and Refining) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 3331 - Primary Smelting and Refining of Copper, 3339 - Primary Smelting and Refining of Nonferrous Metals, Except Copper and Aluminum.
Related Pages & Tools
Further regulatory reference links for NAICS code 331410:
- Sector 31-33 Directory Hub — List of related industries in the Manufacturing sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- NAICS 331410 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (Nonferrous Metal (except Aluminum) Smelting and Refining).
- SBA Size Standards Guide — Complete rules and averaging periods for small business classifications.
- Calculating Annual Receipts Guide — Detailed worked example of revenue calculation rules.
- IRS Principal Business Activity Guide — How NAICS codes map to corporate and entity tax filings.