ISO/TR 17671-1:2002

Welding — Recommendations for welding of metallic materials — Part 1: General guidance for arc welding

ISO/TR 17671-1 gives general guidance for fusion welding of metallic materials in all forms of product (e.g. cast, wrought, extruded, forged). The processes and techniques referred to in this part of ISO/TR 17671 may not all be applicable to all materials.

Soudage — Recommandations pour le soudage des matériaux métalliques — Partie 1: Lignes directrices générales pour le soudage à l'arc

General Information

• Status: Published
• Publication Date: 30-Jan-2002
• ICS: 25.160.10 - Welding processes
• Technical Committee: ISO/TC 44/SC 10 - Quality management in the field of welding
• Drafting Committee: ISO/TC 44/SC 10 - Quality management in the field of welding
• Current Stage: 9093 - International Standard confirmed
• Start Date: 14-Apr-2016
• Completion Date: 12-Feb-2026

Overview

ISO/TR 17671-1:2002 - "Welding - Recommendations for welding of metallic materials - Part 1: General guidance for arc welding" is an informative Technical Report from ISO that provides general guidance for fusion (arc) welding of metallic materials in all product forms (cast, wrought, extruded, forged). It is intended as practical, non‑normative advice to support satisfactory production and control of welding operations and to describe common detrimental phenomena and ways to avoid them. This part covers arc welding processes commonly used in industry and complements material‑specific parts (e.g., ferritic steels, stainless steels, aluminium).

Key topics and requirements

The report addresses core practical topics for arc welding and quality control. Key technical areas include:

• Scope of arc welding processes covered (examples: MMA/manual metal‑arc, MIG/MAG, TIG, submerged arc, plasma; ISO 4063 process references).
• Welding consumables: selection, designation to standards, storage and handling, and handling of damaged consumables.
• Equipment and measurement: ensuring adequate welding plant capacity, earthing, return connections, and measuring parameters (arc voltage, current, wire feed rate, welding speed, gas flow, temperature).
• Fabrication practices: protection from weather and drafts, surface cleanliness, purge/backing gas for oxidation prevention (see ISO 14175).
• Joint preparation and assembly: butt weld details, run‑on/run‑off plates, tack welds, temporary attachments.
• Thermal control: definitions and practical control of preheat temperature, interpass temperature, heat input and thermal efficiency.
• Quality provisions and traceability: contract information, welding procedure specification (WPS), traceability and inspection/testing guidance.
• Post‑weld operations: peening, post‑weld heat treatment, post‑weld cleaning, correction of non‑conformities and distortion control.

Practical applications and users

ISO/TR 17671-1 is useful for:

• Welding engineers and supervisors developing welding procedures and WPS for arc welding.
• Fabricators and production managers implementing good welding practice on structural and pressure components.
• Quality managers and inspectors referencing guidance for storage, handling, inspection and traceability.
• Design engineers and specifiers who need to define fabrication requirements and interface with application standards.
• Training organizations and welding personnel as a companion to welder approval standards.

Keywords: ISO/TR 17671-1, arc welding guidance, fusion welding, welding consumables, welding procedures, preheat interpass temperature, welding quality.

Related standards

• ISO 4063 (welding process nomenclature), ISO 3834 series (quality requirements for welding), ISO 9606 (welder approval), ISO 9956-2 (WPS for arc welding), ISO 14175 (shielding gases), ISO 13916 (preheat/interpass measurement), ISO 14732, ISO 2553.

Standards Content (Sample)

TECHNICAL ISO/TR
REPORT 17671-1
First edition
2002-02-01
Welding — Recommendations for welding
of metallic materials —
Part 1:
General guidance for arc welding
Soudage — Recommandations pour le soudage des matériaux
métalliques —
Partie 1: Lignes directrices générales pour le soudage à l'arc

Reference number
©
ISO 2002
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ii © ISO 2002 – All rights reserved

Contents Page
Foreword.iv
Introduction.v
1 Scope .1
2 References .1
3 Terms and definitions .2
4 Symbols and abbreviated terms .3
5 Provision of quality requirements .3
6 Storage and handling of parent materials.3
7 Fusion welding processes.4
8 Welding consumables.4
9 Equipment .5
10 Fabrication .5
11 Preparation of joint.6
12 Assembly for welding.6
13 Preheat and interpass temperature .6
14 Tack welds.6
15 Temporary attachments.7
16 Run-on and run-off plates.7
17 Arcing.7
18 Inter-run cleaning and treatment .7
19 Heat input .8
20 Welding procedures .8
21 Traceability.8
22 Peening.8
23 Inspection and testing.9
24 Quality requirements.9
25 Correction of non-conformity.9
26 Distortion.9
27 Post-weld heat treatment.9
28 Post-weld cleaning .9
Annex A Information to be supplied prior to the start of fabrication and to be defined in the design
specification.10

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
member bodies). The work of preparing International Standards is normally carried out through ISO technical
committees. Each member body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, governmental and non-governmental, in
liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
The main task of technical committees is to prepare International Standards. Draft International Standards adopted
by the technical committees are circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting a vote.
In exceptional circumstances, when a technical committee has collected data of a different kind from that which is
normally published as an International Standard (“state of the art”, for example), it may decide by a simple majority
vote of its participating members to publish a Technical Report. A Technical Report is entirely informative in nature
and does not have to be reviewed until the data it provides are considered to be no longer valid or useful.
Attention is drawn to the possibility that some of the elements of this part of ISO/TR 17671 may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO/TR 17671-1 was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee
SC 10, Unification of requirements in the field of metal welding.
ISO/TR 17671 consists of the following parts, under the general title Welding — Recommendations for welding of
metallic materials:
 Part 1: General guidance for arc welding
 Part 2: Arc welding of ferritic steels
 Part 3: Arc welding of stainless steels
 Part 4: Arc welding of aluminium and aluminium alloys

iv © ISO 2002 – All rights reserved

Introduction
ISO/TR 17671 is being issued in several parts in order that it may be extended to cover the different types of metallic
materials which will be produced to all International Standards for weldable metallic materials.
This part of ISO/TR 17671 gives general guidance for the satisfactory production and control of welding, and details
some of the possible detrimental phenomena which may occur, with advice on methods by which they may be avoided. It
is generally applicable to fusion welding of metallic materials and is appropriate regardless of the type of fabrication
involved, although the application standard or design specification can have additional requirements. More information is
contained in other parts of ISO/TR 17671. Permissible design stresses in welds, methods of testing and acceptance
levels are not included because they depend on the service conditions of the fabrication. These details should be
obtained from the relevant application standard or design specification.
It has been assumed in the drafting of this part of ISO/TR 17671 that the execution of its provisions is entrusted to
appropriately qualified, trained and experienced personnel.

TECHNICAL REPORT ISO/TR 17671-1:2002(E)

Welding — Recommendations for welding of metallic materials —
Part 1:
General guidance for arc welding
1 Scope
This part of ISO/TR 17671 gives general guidance for fusion welding of metallic materials in all forms of product
(e.g. cast, wrought, extruded, forged).
The processes and techniques referred to in this part of ISO/TR 17671 may not all be applicable to all materials.
Additional information relevant to specific materials is given in the relevant parts of ISO/TR 17671.
2 References
ISO 2553, Welded, brazed and soldered joints — Symbolic representation on drawings
ISO 3834-1, Quality requirements for welding — Fusion welding of metallic materials — Part 1: Guidelines for
selection and use
ISO 3834-2, Quality requirements for welding — Fusion welding of metallic materials — Part 2: Comprehensive
quality requirements
ISO 3834-3, Quality requirements for welding — Fusion welding of metallic materials — Part 3: Standards quality
requirements
ISO 3834-4, Quality requirements for welding — Fusion welding of metallic materials — Part 4: Elementary quality
requirements
ISO 4063, Welding and allied processes — Nomenclature of processes and reference numbers
ISO 9606-1, Approval testing of welders — Fusion welding — Part 1: Steels
ISO 9606-2, Approval testing of welders — Fusion welding — Part 2: Aluminium and aluminium alloys
ISO 9606-3, Approval testing of welders — Fusion welding — Part 3: Copper and copper alloys
ISO 9606-4, Approval testing of welders — Fusion welding — Part 4: Nickel and nickel alloys
ISO 9606-5, Approval testing of welders — Fusion welding — Part 5: Titanium and titanium alloys, zirconium and
zirconium alloys
ISO 9956-2, Specification and approval of welding procedures for metallic materials — Part 2: Welding procedure
specification for arc welding
ISO 13916, Welding — Guidance for the measurement of preheating temperature, interpass temperature and
preheat maintenance temperature
ISO 14175, Welding consumables — Shielding gases for arc welding and cutting
ISO 14732, Welding personnel — Approval testing of welding operators for fusion welding and for resistance weld
setters for fully mechanized and automatic welding of metallic materials
3 Terms and definitions
For the purposes of this part of ISO/TR 17671, the following terms and definitions apply.
3.1
arc welding current
I
current passing through the electrode
3.2
arc voltage
U
electrical potential between contact tip or electrode holder and workpiece
3.3
interpass temperature
T
i
temperature in a multi-run weld and adjacent parent metal immediately prior to the application of the next run
3.4
heat input
Q
energy introduced into the weld region during welding per unit run length
3.5
preheat temperature
T
p
temperature of the workpiece in the weld zone immediately prior to any welding operation
3.6
thermal efficiency
k
ratio of heat energy introduced into the weld to the electrical energy consumed by the arc
3.7
welding speed
v
travel speed of the weld pool
3.8
detrimental effect
imperfections and other harmful influences in the welded area
3.9
run-on plate
piece of metal so placed as to enable the full section of weld metal to be obtained at the beginning of a joint
3.10
run-off plate
piece of metal so placed as to enable the full section of weld metal to be maintained up to the end of a joint
2 © ISO 2002 – All rights reserved

3.11
wire feed rate
w
f
length of wire consumed per unit time
3.12
welding consumables
materials consumed in the making of a weld, including filler metals, fluxes and gases
4 Symbols and abbreviated terms
See Table 1.
Table 1 — Symbols of the terms used
Abbreviations
Term Unit
and symbols
I Arc welding current A
k Thermal efficiency factor 1
l
Length of a run mm
Q Heat input kJ/mm
d Material thickness mm
T
Interpass temperature °C
i
T
Preheat temperature °C
p
U
Arc voltage V
v Welding speed mm/s
w
Wire feed rate mm/min or m/min
f
WPS Welding procedure specification —

5 Provision of quality requirements
The contract gives the information necessary for the execution of the welding. If the manufacturer chooses to have
a quality system, the information should be in accordance with the appropriate part of ISO 3834 (see annex A for
further information).
6 Storage and handling of parent materials
Storage and handling is carried out so that the parent material is not adversely affected.
7 Fusion welding processes
This part of ISO/TR 17671 covers welds made by one of the following welding processes in accordance with
ISO 4063 or by a combination of those processes:
111 manual metal-arc welding with covered electrode;
114 flux-cored wire metal-arc welding without gas shield;
12 submerged arc welding;
131 metal-arc inert gas welding; MIG welding;
135 metal-arc active gas welding; MAG welding;
136 flux-cored wire metal-arc welding with active gas shield;
137 flux-cored wire metal-arc welding with inert gas shield;
138 metal-cored wire metal-arc welding with active gas shield;
139 metal-cored wire metal-arc welding with inert gas shield;
141 tungsten inert gas arc welding; TIG welding;
15 plasma arc welding;
other fusion welding processes by agreement.
8 Welding consumables
8.1 General
Welding consumables should be designated in accordance with the relevant International Standard. Consumables
are selected with regard to the particular application, e.g. joint design, welding position and the properties required
to meet the service conditions. Any special recommendations given by the manufacturer/supplier should be
observed.
In some cases it may be possi
...