This Technical Report provides an American grouping system for materials for welding purposes, classified in
accordance with the grouping system of ISO/TR 15608.
It may also apply for other purposes, such as heat treatment, forming and non-destructive testing. The types
of steels are in accordance with the grouping system of ISO/TR 15608:2000, Table 1.
This Technical Report covers grouping systems for the following standardized materials:
steel;
aluminium and its alloys;
nickel and its alloys;
copper and its alloys;
titanium and its alloys;
zirconium and its alloys;
cast irons.
ISO/TR 20173:2005 history
2018ISO/TR 20173:2018 Welding - Grouping systems for materials - American materials
2009ISO/TR 20173:2009 Welding - Grouping systems for materials - American materials
2005ISO/TR 20173:2005 Welding - Grouping systems for materials - American materials