CEN ISO/TR 20173:2009

This Technical Report provides an American grouping system for materials for welding purposes, classified in accordance with the grouping system of ISO/TR 15608:2005[1]. It may also apply for other purposes, such as heat treatment, forming, and non-destructive testing. Types of steels are listed in accordance with the grouping system of ISO/TR 15608:2005[1], 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.