This document specifies a uniform system for grouping materials for welding purposes. This document can also be applied for other purposes, such as heat treatment, forming and non-destructive testing.

This document is applicable to grouping systems for the following standardized materials:

—    steels;

—    aluminium and its alloys;

—    copper and its alloys;

—    nickel and its alloys;

—    titanium and its alloys;

—    zirconium and its alloys;

—    cast irons;

—    cobalt alloys.