331512 — Steel Investment Foundries
Description
This U.S. industry comprises establishments primarily engaged in manufacturing steel investment castings. Investment molds are formed by covering a wax shape with a refractory slurry. After the refractory slurry hardens, the wax is melted, leaving a seamless mold. Investment molds provide highly detailed, consistent castings. Establishments in this industry purchase steel made in other establishments.
Exclusions & Cross-References
- Manufacturing steel castings (except steel investment castings)--are classified in U.S. Industry 331513,
- Steel Foundries (except Investment); and
- Manufacturing steel investment castings and further manufacturing them into finished products--are
- classified based on the specific finished product.
Overview Facts
| NAICS Code | 331512 |
|---|---|
| Industry Title | Steel Investment Foundries |
| SBA Size Standard | 1,050 employees |
| IRS PBA Code | 331500 (rolled-up match) |
| Sectors Hierarchy | Sector 31-33 → 331 → 3315 |
| Source / Verified | US Census 2022 NAICS Manual / 2026-06-28 |
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 3324 - Steel Investment Foundries (via SIC1987:3324→NAICS1997:331512→2002:331512→2007:331512→2012:331512→2017:331512→2022:331512)
Related Resources & Compliance Guides
Further regulatory reference links for NAICS code 331512:
- 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.
- 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.
Related Industries in 3315
Frequently Asked Questions (FAQ)
Is 331512 a valid 2022 NAICS code?
NAICS 331512 is 'Steel Investment Foundries', a 2022 U.S. national industry under Sector 31-33 (Manufacturing); the SBA small-business size standard is 1,050 employees.
What is the SBA size standard for NAICS 331512?
The SBA small business size standard for NAICS 331512 is 1,050 employees (based on employees).
What is the legacy SIC code mapping for 331512?
NAICS code 331512 maps to the legacy 1987 SIC codes: 3324 - Steel Investment Foundries.