# NAICS 331110: Iron and Steel Mills and Ferroalloy Manufacturing

The SBA size standard for NAICS 331110 is 1,500 employees (13 CFR 121.201).

| Field | Value |
| --- | --- |
| Code | 331110 |
| Title | Iron and Steel Mills and Ferroalloy Manufacturing |
| Level | 6 |
| Parent | 33111 |
| Size standard | 1,500 employees |
| Footnote | - |

## Description

This industry comprises establishments primarily engaged in one or more of the following: (1) direct reduction of iron ore; (2) manufacturing pig iron in molten or solid form; (3) converting pig iron into steel; (4) making steel; (5) making steel and manufacturing shapes (e.g., bar, plate, rod, sheet, strip, wire); (6) making steel and forming pipe and tube; and (7) manufacturing electrometallurgical ferroalloys. Ferroalloys add critical elements, such as silicon and manganese for carbon steel and chromium, vanadium, tungsten, titanium, and molybdenum for low- and high-alloy metals. Ferroalloy

## Sources

- Census NAICS: https://www.census.gov/naics/
- SBA size standards: https://www.sba.gov/document/support-table-size-standards

## API and MCP

- REST: GET https://samgovapi.io/api/v1/naics/331110/size-standard?revenue_usd=...
- MCP tools: naics_lookup, size_standard_check

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