# AK Steel Holding

> AK Steel Holding Corporation was a producer of flat-rolled carbon, stainless and
> electrical steel and of carbon and stainless tubular products, serving the
> automotive, infrastructure, manufacturing and electrical power markets. It was
> acquired by Cleveland-Cliffs Inc. on 2020-03-13 and no longer exists as an
> independent company.

<!--
generated: 2026-08-30
method: generated
source: api-evangelist all/ak-steel-holding/apis.yml and the repo artifacts listed
        below. No llms.txt is published by AK Steel Holding; none could be, because
        the company operates no web host. Probed 2026-08-30.
-->

## Status

AK Steel Holding has **no API, no developer portal and no machine-readable contract**,
and cannot acquire one: it is a retired entity.

- Acquired by Cleveland-Cliffs Inc., completed 2020-03-13.
- `aksteel.com`, `www.aksteel.com` and `ir.aksteel.com` publish no DNS address record
  as of 2026-08-30 — every HTTP probe fails to resolve. The domain is still registered
  by the successor and routes mail only.
- The successor site `www.clevelandcliffs.com` returns HTTP 404 for every
  `/.well-known/` path, `/openapi.json`, `/swagger.json`, `/api-docs` and `/llms.txt`.
- No first-party client library exists on npm, PyPI, RubyGems or crates.io.
- No OpenAPI, AsyncAPI, GraphQL, gRPC or WSDL contract was found on any host.

If you are an agent looking for a callable steel-industry interface, AK Steel is not one.

## Where to go instead

- [Cleveland-Cliffs Inc. — successor entity](https://www.clevelandcliffs.com): the company
  that acquired AK Steel and now operates its mills and product lines.
- [Cleveland-Cliffs Investor Relations](https://www.clevelandcliffs.com/investors): replaces
  the retired `ir.aksteel.com` investor portal.
- [Cleveland-Cliffs completes acquisition of AK Steel](https://www.clevelandcliffs.com/news/news-releases/detail/35/cleveland-cliffs-completes-acquisition-of-ak-steel):
  the primary source for the 2020-03-13 completion date.

## What this profile holds

- [apis.yml](../apis.yml): the API Evangelist provider index for AK Steel Holding.
- [lifecycle/ak-steel-holding-lifecycle.yml](../lifecycle/ak-steel-holding-lifecycle.yml):
  entity retirement record, successor, and the observed state of each former host.
- [well-known/ak-steel-holding-well-known.yml](../well-known/ak-steel-holding-well-known.yml):
  the `/.well-known/` probe log — a recorded absence, every path.
- [security/ak-steel-holding-domain-security.yml](../security/ak-steel-holding-domain-security.yml):
  TLS/DNSSEC/SPF/DMARC posture of the retained `aksteel.com` zone and the successor site.
- [plans/ak-steel-holding-plans-pricing.yml](../plans/ak-steel-holding-plans-pricing.yml):
  no published plans (`plan_count: 0`).
- [rate-limits/ak-steel-holding-rate-limits.yml](../rate-limits/ak-steel-holding-rate-limits.yml):
  no published rate limits (`limit_count: 0`).
- `blogs/`, `press/`, `search/`: archived industry coverage referencing AK Steel.

## Optional

- [AK Steel on LinkedIn](https://www.linkedin.com/company/ak-steel): the legacy company page.