ISO TR 20173-2018 PDF

Full title and description

Welding — Grouping systems for materials — American materials. This technical report provides an American-style grouping system for materials used in welding, classified in accordance with the grouping system of ISO/TR 15608. It lists ferrous and non‑ferrous materials commonly used in North America and includes selected Canadian, Australian and New Zealand specifications; it is intended to support material selection, classification and compatibility for welding and related processes.

Abstract

The report presents American grouping identifiers mapped to the ISO/TR 15608 grouping system for a range of standardized materials — steel; aluminium and its alloys; nickel and its alloys; copper and its alloys; titanium and its alloys; zirconium and its alloys; and cast irons. It is informational and can also be used for purposes such as heat treatment, forming and non‑destructive testing. Tables list material types and their group assignments to aid compatibility and selection.

General information

• Status: Published (current).
• Publication date: 20 July 2018.
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 25.160.20 (Welding consumables and related processes).
• Edition / version: Edition 3 (ISO/TR 20173:2018).
• Number of pages: 106 pages (official ISO listing).

Key bibliographic details above are taken from the ISO record and recognized national distributors.

Scope

ISO/TR 20173:2018 defines an American grouping system for materials for welding purposes, mapped to the ISO/TR 15608 grouping framework. The scope covers standardized steels and non‑ferrous materials (aluminium, nickel, copper, titanium, zirconium and cast irons) commonly used in North America, with additional entries for some Canadian, Australian and New Zealand specifications. The report is informational (technical report) and intended to help with classification, material selection and compatibility rather than to prescribe test methods.

Key topics and requirements

• American material grouping identifiers mapped to ISO/TR 15608 groups.
• Comprehensive tables of ferrous and non‑ferrous materials and alloys used in North America.
• Guidance for using group assignments for welding, heat treatment, forming and non‑destructive testing.
• Inclusion of select Canadian, Australian and New Zealand material specifications for North American practice alignment.
• Informational (no normative test methods); intended as a cross‑reference and classification aid.

These topics summarize the technical content and intended use of the tables and mapping within the report.

Typical use and users

Used by welding engineers, materials engineers, fabricators, inspectors, standards committees and procurement/specification teams to classify materials, verify material compatibility for welding procedures and to translate between American material identifiers and ISO grouping codes. Also useful for training, quality assurance and documenting weld procedure specifications where material grouping is required.

Related standards

Directly related to ISO/TR 15608 (material grouping system used as the classification framework) and supersedes earlier editions of ISO/TR 20173 (for example ISO/TR 20173:2009). It is commonly used alongside other welding standards and guidance on qualification and procedure (for example standards covering welder qualification, welding procedure specification and filler materials).

Keywords

welding; material grouping; American materials; ISO/TR 20173; ISO/TR 15608; steel; aluminium; nickel; copper; titanium; zirconium; cast iron; material classification; welding consumables.

FAQ

Q: What is this standard?

A: ISO/TR 20173:2018 is a technical report titled "Welding — Grouping systems for materials — American materials" that provides an American-style grouping system for materials used in welding and maps those groupings to the ISO/TR 15608 framework.

Q: What does it cover?

A: It covers grouping tables and cross‑references for standardized steels and non‑ferrous alloys (aluminium, nickel, copper, titanium, zirconium and cast irons) commonly used in North America, plus selected Canadian, Australian and New Zealand specifications, and guidance on applying the groupings for welding and related processes.

Q: Who typically uses it?

A: Welding and materials engineers, fabricators, inspectors, procurement/specification writers, standards committees and anyone needing to classify or cross‑reference material designations for welding applications.

Q: Is it current or superseded?

A: ISO/TR 20173:2018 is the current published edition (published July 2018) and replaces the earlier ISO/TR 20173:2009. It is listed as published and in force in ISO records.

Q: Is it part of a series?

A: It is part of a family of ISO technical reports and standards addressing material grouping and welding practice; specifically it references and maps to ISO/TR 15608 (the ISO grouping system for materials) and complements other ISO welding standards and technical reports.

Q: What are the key keywords?

A: Welding, material grouping, American materials, material classification, alloys, ISO/TR 15608, compatibility, welding consumables.