AK Steel Holding Corporation
E705868
AK Steel Holding Corporation is a major American steel manufacturer known for producing flat-rolled carbon, stainless, and electrical steel products for automotive, appliance, construction, and other industrial markets.
All labels observed (4)
| Label | Occurrences |
|---|---|
| AK Steel Holding Corporation canonical | 2 |
| AK Steel | 1 |
| AK Steel Corporation | 1 |
| AK Steel Holding Corp. | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7854574 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: AK Steel Holding Corporation Context triple: [Middletown, Ohio, notableCompanyHistory, AK Steel Holding Corporation]
-
A.
Armco Steel
Armco Steel was a major American steel manufacturing company historically significant for its large integrated mill operations and role in the industrial development of Middletown, Ohio.
-
B.
Kaiser Steel
Kaiser Steel was a major American steel-producing company that played a significant role in U.S. industrial and wartime production in the mid-20th century.
-
C.
Ace Steel
Ace Steel is an American professional wrestler and trainer best known for mentoring top stars like CM Punk and working behind the scenes in major wrestling promotions.
-
D.
United States Steel International
United States Steel International is a global engineering and construction arm of the U.S. steel industry that has been involved in designing major infrastructure projects worldwide.
-
E.
United States Steel Corporation
United States Steel Corporation is a major American steel-producing company formed in 1901 through the consolidation of several steel businesses, becoming the world’s first billion-dollar corporation.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: AK Steel Holding Corporation Target entity description: AK Steel Holding Corporation is a major American steel manufacturer known for producing flat-rolled carbon, stainless, and electrical steel products for automotive, appliance, construction, and other industrial markets.
-
A.
Armco Steel
Armco Steel was a major American steel manufacturing company historically significant for its large integrated mill operations and role in the industrial development of Middletown, Ohio.
-
B.
Kaiser Steel
Kaiser Steel was a major American steel-producing company that played a significant role in U.S. industrial and wartime production in the mid-20th century.
-
C.
Ace Steel
Ace Steel is an American professional wrestler and trainer best known for mentoring top stars like CM Punk and working behind the scenes in major wrestling promotions.
-
D.
United States Steel International
United States Steel International is a global engineering and construction arm of the U.S. steel industry that has been involved in designing major infrastructure projects worldwide.
-
E.
United States Steel Corporation
United States Steel Corporation is a major American steel-producing company formed in 1901 through the consolidation of several steel businesses, becoming the world’s first billion-dollar corporation.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
manufacturing company
ⓘ
steel company ⓘ |
| acquiredBy |
Cleveland-Cliffs Inc.
ⓘ
linked to:
Cleveland-Cliffs Iron Company
|
| acquisitionAnnounced | 2019 ⓘ |
| acquisitionCompleted | 2020 ⓘ |
| businessModel | vertically integrated steel production ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| foundedBy |
Armco Inc.
ⓘ
linked to:
Armco Steel
|
| hasSubsidiary |
AK Steel Corporation
ⓘ
linked to:
AK Steel Holding Corporation
|
| headquartersCountry |
United States
ⓘ
linked to:
United States of America
|
| headquartersLocation | West Chester, Ohio ⓘ |
| industry |
metals industry
ⓘ
steel industry ⓘ |
| isListedAs |
AK Steel Holding Corp.
ⓘ
linked to:
AK Steel Holding Corporation
|
| market | North America ⓘ |
| materialType |
carbon steel
ⓘ
electrical steel ⓘ stainless steel ⓘ |
| notableProductCategory |
automotive-grade steel
ⓘ
grain-oriented electrical steel ⓘ high-strength steel ⓘ non-grain-oriented electrical steel ⓘ |
| operatesFacilityType |
finishing plant
ⓘ
steel mill ⓘ |
| parentCompany |
Cleveland-Cliffs Inc.
ⓘ
linked to:
Cleveland-Cliffs Iron Company
|
| predecessor |
Armco Inc.
ⓘ
linked to:
Armco Steel
|
| product |
electrical steel
ⓘ
flat-rolled carbon steel ⓘ flat-rolled steel ⓘ stainless steel ⓘ |
| regionServed |
Canada
ⓘ
Mexico ⓘ United States ⓘ
linked to:
United States of America
|
| servesIndustry |
appliance industry
ⓘ
automotive industry ⓘ construction industry ⓘ industrial equipment industry ⓘ |
| stockExchange | New York Stock Exchange ⓘ |
| tickerSymbol | AKS ⓘ |
| usedFor |
automotive body panels
ⓘ
automotive structural components ⓘ construction components ⓘ household appliances ⓘ industrial machinery components ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: AK Steel Holding Corporation Description of subject: AK Steel Holding Corporation is a major American steel manufacturer known for producing flat-rolled carbon, stainless, and electrical steel products for automotive, appliance, construction, and other industrial markets.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: AK Steel Holding Corporation
linked to: AK Steel Holding Corporation
linked to: AK Steel Holding Corporation