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ISO/FDIS 4948-1

Steels — Classification — Part 1: Classification of steels based on chemical composition ISO/FDIS 4948-1

General information

50.20   Proof sent to secretariat or FDIS ballot initiated: 8 weeks   Aug 26, 2026

ISO

ISO/TC 17 Steel

International Standard

77.080.20   Steels

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.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 4948-1:1982

NOW

IN_DEVELOPMENT
ISO/FDIS 4948-1
50.20 Proof sent to secretariat or FDIS ballot initiated: 8 weeks
Aug 26, 2026




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