{
  "@context": [
    "https://schema.org",
    {
      "ec": "https://entitycodes.org/vocab#"
    }
  ],
  "@type": "DefinedTerm",
  "@id": "https://entitycodes.org/naics/331110/",
  "identifier": "331110",
  "name": "Iron and Steel Mills and Ferroalloy Manufacturing",
  "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.  Ferroalloys include iron-rich alloys and more pure forms of elements added during the steel manufacturing process that alter or improve the characteristics of the metal.",
  "url": "https://entitycodes.org/naics/331110/",
  "inDefinedTermSet": {
    "@type": "DefinedTermSet",
    "name": "NAICS 2022",
    "url": "https://entitycodes.org/naics/"
  },
  "sameAs": [
    "https://www.census.gov/naics/?input=331110&year=2022"
  ],
  "additionalProperty": [
    {
      "@type": "PropertyValue",
      "name": "SBA size standard",
      "value": "1,500 employees",
      "unitText": "employees",
      "description": "13 CFR 121.201, as-of 2023-03-17"
    },
    {
      "@type": "PropertyValue",
      "name": "IRS PBA code",
      "value": "331110",
      "description": "IRS Principal Business Activity code (method: exact)"
    },
    {
      "@type": "PropertyValue",
      "name": "US establishments",
      "value": 359,
      "description": "Census County Business Patterns 2023"
    }
  ],
  "ec:crosswalk": [
    {
      "system": "SIC 1987",
      "code": "3312",
      "title": "Steel Works, Blast Furnaces",
      "confidence": "chain",
      "via": "SIC1987:3312\u2192NAICS1997:331111\u21922002:331111\u21922007:331111\u21922012:331110\u21922017:331110\u21922022:331110",
      "url": "https://entitycodes.org/sic/3312/"
    },
    {
      "system": "SIC 1987",
      "code": "3313",
      "title": "Electrometallurgical Products, Except Steel",
      "confidence": "chain",
      "via": "SIC1987:3313\u2192NAICS1997:331112\u21922002:331112\u21922007:331112\u21922012:331110\u21922017:331110\u21922022:331110",
      "url": "https://entitycodes.org/sic/3313/"
    }
  ],
  "ec:provenance": {
    "definition": {
      "source": "US Census 2022 NAICS Manual",
      "type": "US gov \u2014 public domain"
    },
    "crosswalk": {
      "source": "Census NAICS\u2194SIC concordance",
      "method": "transitive chain (NOT direct)"
    },
    "sba_size_standard": {
      "source": "SBA Table of Size Standards (13 CFR 121.201)",
      "as_of": "2023-03-17"
    },
    "establishments": {
      "source": "Census County Business Patterns",
      "year": 2023
    }
  },
  "license": "https://www.usa.gov/government-works",
  "dateModified": "2026-07-21",
  "isPartOf": {
    "@type": "DefinedTerm",
    "identifier": "3311",
    "name": "Iron and Steel Mills and Ferroalloy Manufacturing",
    "@id": "https://entitycodes.org/naics/3311/"
  }
}