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.