Abstract / scope
This part of ISO 4948 defines steel and gives 2.0 % carbon as the usual dividing line between steel and cast iron. The classification based on the specified values for the ladle analyses of the elements given in the table.
ISO 4948-1:1982Published
Steels — Classification — Part 1: Classification of steels into unalloyed and alloy steels based on chemical composition
Aciers — Classification — Partie 1: Classification en aciers alliés et en aciers non alliés basée sur la composition chimique
A new edition is under development: ISO 4948-1.