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:

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steels;

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aluminium and its alloys;

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copper and its alloys;

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nickel and its alloys;

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titanium and its alloys;

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zirconium and its alloys;

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cast irons;

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cobalt alloys.