SIC 3334 — Primary Production of Aluminum
SIC 3334 is 'Primary Production of Aluminum', a 4-digit Standard Industrial Classification (SIC) code under Major Group 33: Primary Metal Industries (Division D: Manufacturing); it maps to modern 2022 NAICS code(s): 331313 (Alumina Refining and Primary Aluminum Production).
Description & Classification
SIC code 3334 representing 'Primary Production of Aluminum' is an industry category in the Standard Industrial Classification (SIC) system under U.S. OSHA and Federal procurement registers.
Modern NAICS Crosswalk
Trace the modern equivalent classifications in the 2022 North American Industry Classification System (NAICS) database:
- NAICS 331313 - Alumina Refining and Primary Aluminum Production (via SIC1987:3334→NAICS1997:331312→2002:331312→2007:331312→2012:331313→2017:331313→2022:331313)
Classification Details
| SIC Code | 3334 |
|---|---|
| Industry Title | Primary Production of Aluminum |
| Division | Division D: Manufacturing |
| Major Group | Major Group 33: Primary Metal Industries |
| Source / Verified | US Census 1987 SIC Concordance / 2026-06-28 |
Related Resources & Compliance Guides
Further regulatory reference links for legacy SIC code 3334:
- SIC Codes Complete Compliance Guide — Detailed history and active legal applications of the SIC classification framework.
- Why Legacy SIC Codes Persist Guide — How credit systems and the SEC still rely on SIC metadata.
- SIC ↔ NAICS Crosswalk Tool — Trace industrial code conversions dynamically.
- SIC Major Group 33 Hub — View other legacy industries in this business division.
Related Industries in Major Group 33
3312 - Steel Works, Blast Furnaces...3313 - Electrometallurgical Products, Except St...3315 - Steel Wiredrawing and Steel Nails and Sp...3316 - Cold-Rolled Steel Sheet, Strip, and Bars...3317 - Steel Pipe and Tubes...3321 - Gray and Ductile Iron Foundries...3322 - Malleable Iron Foundries...3324 - Steel Investment Foundries...
Frequently Asked Questions (FAQ)
What industry does SIC code 3334 represent?
SIC 3334 is 'Primary Production of Aluminum', a 4-digit Standard Industrial Classification (SIC) code under Major Group 33: Primary Metal Industries (Division D: Manufacturing); it maps to modern 2022 NAICS code(s): 331313 (Alumina Refining and Primary Aluminum Production).
What is the modern 2022 NAICS mapping for SIC 3334?
SIC code 3334 maps to modern NAICS codes: 331313 - Alumina Refining and Primary Aluminum Production.