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

• low-carbon steel
• medium-carbon steel
• high-carbon steel
• blister steel

Anotations

Scope note:

Steel that does not have specified minimum content levels of alloying elements. The term can also refer to steel that does not have more than 0.40% copper or to steel that has maximum content levels of the following: manganese 1.65%, silicon 0.60%, and copper 0.60%.