Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by composition]
6. inorganic material
7. metal
8. [metal by composition or origin]
9. [iron and iron alloy]
10. iron alloy
11. steel (alloy)

Narrower term/s

• chrome steel[+]
  • chrome-vanadium steel
  • stainless steel [+]
    • austenitic stainless steel
    • martensitic stainless steel
• high-strength low-alloy steel[+]
  • Cor-Ten steel (TM)
• nickel steel
• steel-aluminum alloy
• titanium steel
• structural steel [NP]

Anotations

Scope note:

A general name for steel that owes its distinctive properties to elements other than carbon; types of alloy steel typically take the name of the element or elements that are most influential on their character. Usually used for toolmaking and building.