ISO TR 20174-2020 PDF

Full title and description

ISO/TR 20174:2020 — Welding — Grouping systems for materials — Japanese materials. This technical report provides a Japanese grouping system for materials used in welding, listing types of steels, aluminium and aluminium alloys, and titanium and titanium alloys classified in accordance with the grouping system of ISO/TR 15608.

Abstract

ISO/TR 20174:2020 describes material-grouping tables and guidance for Japanese standardized materials intended primarily for welding purposes. It is informative and may also be used for related activities such as heat treatment, forming and non‑destructive testing. The document aligns its tables with the grouping system referenced in ISO/TR 15608.

General information

• Status: Published (current technical report).
• Publication date: 19 June 2020 (edition 2, 2020‑06).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 25.160.20 (welding — welding consumables / materials grouping).
• Edition / version: Edition 2 (2020).
• Number of pages: 26 pages (ISO published version).

Key bibliographic and lifecycle details are given in the ISO bibliographic record; this 2020 edition replaces the earlier ISO/TR 20174:2005.

Scope

Provides a Japanese-specific materials grouping system for use in welding contexts, organised to match the grouping approach of ISO/TR 15608. The document covers standardized steels, aluminium and its alloys, and titanium and its alloys; it is intended to help classify these materials for welding procedure selection, compatibility assessment and related processes (including heat treatment, forming and NDT).

Key topics and requirements

• Material grouping tables for Japanese standardized steels, aluminium alloys and titanium alloys mapped to the ISO/TR 15608 grouping scheme.
• Classification criteria and identifiers used to place materials into groups for welding compatibility and procedure selection.
• Guidance on application of the grouping system for welding, heat treatment, forming and non‑destructive testing contexts.
• Informative recommendations (technical report) rather than normative requirements — intended as a reference to harmonize material grouping practices.

Typical use and users

Used by welding engineers, metallurgists, procedure writers, manufacturers, fabricators, inspection and testing laboratories, standards developers, and national bodies that adopt ISO and CEN deliverables. It is typically referenced when preparing welding procedure specifications, selecting filler materials and assessing cross‑compatibility between Japanese material designations and international grouping systems.

Related standards

Directly linked to ISO/TR 15608 (guidelines for a metallic materials grouping system) which defines the grouping framework used by ISO/TR 20174. ISO/TR 20174:2020 replaces ISO/TR 20174:2005. National/adopted versions (PD CEN / national bodies) exist for regional application and may include national forewords or translations. Also used alongside other welding and materials standards produced by ISO/TC 44 and CEN/TC 121.

Keywords

welding; material grouping; Japanese materials; steels; aluminium alloys; titanium alloys; ISO/TR 20174; ISO/TR 15608; material classification; welding procedure selection.

FAQ

Q: What is this standard?

A: ISO/TR 20174:2020 is a technical report that provides a Japanese grouping system for standardized materials as used in welding, aligning those groupings with the ISO/TR 15608 framework.

Q: What does it cover?

A: It covers grouping tables and guidance for steels, aluminium and aluminium alloys, and titanium and titanium alloys (Japanese standardized grades), and gives guidance on applying those groupings for welding, heat treatment, forming and non‑destructive testing.

Q: Who typically uses it?

A: Welding engineers, materials and metallurgical engineers, fabricators, manufacturers, NDT and quality personnel, and standards/technical committees that need harmonized material group classifications.

Q: Is it current or superseded?

A: The 2020 edition (edition 2) is the current published technical report and it supersedes the earlier ISO/TR 20174:2005. National adopted versions may have separate effective dates.

Q: Is it part of a series?

A: It is part of ISO/TC 44/SC 10’s suite of documents on welding materials and grouping systems and is explicitly linked to ISO/TR 15608 (the general grouping guidelines). It is also maintained alongside other welding-related TRs and standards for material classification and welding practice.

Q: What are the key keywords?

A: Welding, material grouping, Japanese materials, steels, aluminium alloys, titanium alloys, grouping tables, ISO/TR 15608.