ISO/TR 15608:2017 provides guidelines for a uniform system for grouping materials for welding purposes. It can also be applied for other purposes, such as heat treatment, forming and non-destructive testing.

It covers 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.