Alloy designations
SAE – Society of Automotive Engineers
UNS – Unified numbering system
Trade name
|
SAE designations |
Major alloying elements |
Type |
|
2xx |
Cr, Ni, Mn, N |
Austenitic |
|
3xx |
Cr, Ni |
Austenitic and duplex |
|
4xx |
Cr |
Ferritic and martensitic |