{
 "id": "10.03",
 "slug": "grain-oriented-electrical-steel-and-amorphous-cores-transformers",
 "url": "/parts/materials-and-upstream-inputs/grain-oriented-electrical-steel-and-amorphous-cores-transformers",
 "name": "Grain-oriented electrical steel & amorphous cores",
 "qualifiers": "transformers",
 "layer": {
  "id": 10,
  "name": "Materials & upstream inputs"
 },
 "parent_id": null,
 "children": [],
 "summary": "Grain-oriented electrical steel and amorphous metal alloy used to build the laminated cores inside power, distribution and instrument transformers.",
 "description_md": "The core of a transformer is a stack of thin steel or amorphous-alloy laminations that carries the magnetic flux linking the primary and secondary windings; the grade of that material sets the transformer's efficiency and, increasingly, how long it takes to build one. Grain-oriented electrical steel (GOES) is the standard material for larger power and distribution transformers; amorphous alloy cores are used where no-load losses matter most. This sits directly upstream of every transformer in the power chain — utility and substation transformers, unit substations and pad-mounted transformers feeding the building, and the smaller transformers inside power distribution equipment (Layer 6).\nProduction is concentrated among a small number of specialty steel mills that run dedicated GOES lines, and a shift toward amorphous cores draws on an even narrower alloy-supply base. Utilities and data-center developers have been buying transformers years ahead of need, and the taxonomy identifies GOES supply itself — not transformer manufacturing capacity — as the binding constraint behind those lead times. For investors, the questions are mill capacity additions (GOES lines are slow and capital-intensive to build), the pace of qualification for new suppliers, and exposure to Cleveland-Cliffs, named in the taxonomy as the sole US GOES producer, versus the larger number of international mills.",
 "ai_delta": "GOES supply is the input constraint behind transformer lead times.",
 "bottleneck_status": "tight",
 "scale_tiers": [
  "enterprise",
  "hyperscale_building",
  "ai_campus",
  "gw_class"
 ],
 "density_modes": [
  "any"
 ],
 "scale_notes": "Applies from enterprise scale up, wherever a dedicated power or distribution transformer is used; material draw grows sharply with transformer size and count toward hyperscale, campus and gigawatt-class sites.",
 "flow": [
  "supply"
 ],
 "companies": [
  {
   "company_id": "arcelormittal",
   "name": "ArcelorMittal",
   "role": "manufacturer",
   "confidence": "inferred",
   "ownership_type": "public",
   "ticker": "MT",
   "product_note": null,
   "note": null,
   "source_url": null
  },
  {
   "company_id": "baosteel",
   "name": "Baosteel",
   "role": "manufacturer",
   "confidence": "inferred",
   "ownership_type": "public",
   "ticker": "600019.SS",
   "product_note": null,
   "note": null,
   "source_url": null
  },
  {
   "company_id": "cleveland-cliffs",
   "name": "Cleveland-Cliffs",
   "role": "manufacturer",
   "confidence": "inferred",
   "ownership_type": "public",
   "ticker": "CLF",
   "product_note": null,
   "note": "sole US GOES producer",
   "source_url": null
  },
  {
   "company_id": "jfe",
   "name": "JFE",
   "role": "manufacturer",
   "confidence": "inferred",
   "ownership_type": "public",
   "ticker": "5411.T",
   "product_note": null,
   "note": null,
   "source_url": null
  },
  {
   "company_id": "nippon-steel",
   "name": "Nippon Steel",
   "role": "manufacturer",
   "confidence": "inferred",
   "ownership_type": "public",
   "ticker": "5401.T",
   "product_note": null,
   "note": "Nippon Steel / US Steel",
   "source_url": null
  },
  {
   "company_id": "posco",
   "name": "POSCO",
   "role": "manufacturer",
   "confidence": "inferred",
   "ownership_type": "public",
   "ticker": "005490.KS",
   "product_note": null,
   "note": null,
   "source_url": null
  },
  {
   "company_id": "shougang",
   "name": "Shougang",
   "role": "manufacturer",
   "confidence": "inferred",
   "ownership_type": "public",
   "ticker": "000959.SZ",
   "product_note": null,
   "note": null,
   "source_url": null
  },
  {
   "company_id": "thyssenkrupp",
   "name": "thyssenkrupp",
   "role": "manufacturer",
   "confidence": "inferred",
   "ownership_type": "public",
   "ticker": "TKA.DE",
   "product_note": "Electrical Steel",
   "note": null,
   "source_url": null
  },
  {
   "company_id": "proterial",
   "name": "Proterial",
   "role": "manufacturer",
   "confidence": "inferred",
   "ownership_type": "private",
   "ticker": null,
   "product_note": null,
   "note": "amorphous",
   "source_url": null
  }
 ]
}