EN ISO 14175:2008
(Main)Welding consumables - Gases and gas mixtures for fusion welding and allied processes (ISO 14175:2008)
Welding consumables - Gases and gas mixtures for fusion welding and allied processes (ISO 14175:2008)
ISO 14175:2008 specifies requirements for the classification of gases and gas mixtures used in fusion welding and allied processes including, but not limited to:
tungsten arc welding (Process 141);
gas-shielded metal arc welding (Process 13);
plasma arc welding (Process 15);
plasma arc cutting (Process 83);
laser welding (Process 52);
laser cutting (Process 84);
arc braze welding (Process 972).
Process numbers are in accordance with ISO 4063.
The purpose of ISO 14175:2008 is to classify and designate shielding, backing, process and assist gases in accordance with their chemical properties and metallurgical behaviour as the basis for correct selection by the user and to simplify the possible qualification procedures.
Schweißzusätze - Gase und Mischgase für das Lichtbogenschweißen und verwandte Prozesse (ISO 14175:2008)
Diese Internationale Norm legt Anforderungen für die Einteilung von Gasen und Mischgasen fest, die zum Verbindungsschweißen und für verwandte Prozesse verwendet werden; sie sind jedoch nicht auf folgende Anwendungsgebiete begrenzt:
Wolfram-Inertgasschweißen (Prozess 141);
Metall-Schutzgasschweißen (Prozess 13);
Plasmaschweißen (Prozess 15);
Plasmaschneiden (Prozess 83);
Laserstrahlschweißen (Prozess 52);
Laserstrahlschneiden (Prozess 84);
Lichtbogenlöten (Prozess 972).
ANMERKUNG Die Prozessnummern entsprechen ISO 4063.
Es ist der Zweck dieser Internationalen Norm, Schutzgase, Gase zum Unternahtschutz, Prozessgase und Hilfsgase entsprechend ihren chemischen Eigenschaften und ihrem metallurgischen Verhalten als Grundlage für eine korrekte Auswahl durch den Anwender einzuteilen und zu bezeichnen und für mögliche Zulas¬sungsverfahren zu vereinfachen.
Gasreinheiten und Mischgenauigkeiten gelten für den Anlieferungszustand durch den Lieferanten (Hersteller) und nicht für den Zeitpunkt des Verbrauchs.
Gase und Mischgase können entweder in flüssigem oder gasförmigem Zustand geliefert werden; zum Schweißen und für verwandte Prozesse werden die Gase jedoch immer gasförmig verwendet.
Brenngase wie Acetylen, Erdgas, Propan usw. und Lasergase (Resonatorgase) werden von dieser Inter¬nationalen Norm nicht erfasst.
Transport und Gebrauch der Gase und der Gasbehälter müssen nach den vorgeschriebenen örtlichen, nationalen und regionalen Normen und Verordnungen erfolgen.
Produits consommables pour le soudage - Gaz et mélanges gazeux pour le soudage par fusion et les techniques connexes (ISO 14175:2008)
L'ISO 14175:2008 spécifie les exigences qui s'appliquent à la classification des gaz et mélanges gazeux utilisés dans le soudage par fusion et les techniques connexes, y compris de façon non exhaustive ce qui suit:
le soudage TIG (procédé 141);
le soudage à l'arc avec électrode fusible sous protection gazeuse (procédé 13);
le soudage plasma (procédé 15);
le coupage plasma (procédé 83);
le soudage laser (procédé 52);
le coupage laser (procédé 84);
le soudobrasage à l'arc (procédé 972).
La numérotation des procédés est conforme à l'ISO 4063.
L'objet de l'ISO 14175:2008 est de classer et de désigner les gaz de protection, de protection envers, de transformation et d'assistance en fonction de leurs caractéristiques chimiques et de leur comportement métallurgique, afin de faciliter le choix de l'utilisateur et de simplifier d'éventuelles procédures de qualification.
Pomožni materiali za varjenje - Plini in plinske mešanice za obločno varjenje in sorodne postopke (ISO 14175:2008)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2008
1DGRPHãþD
SIST EN 439:1995
3RPRåQLPDWHULDOL]DYDUMHQMH3OLQLLQSOLQVNHPHãDQLFH]DREORþQRYDUMHQMHLQ
VRURGQHSRVWRSNH ,62
Welding consumables - Gases and gas mixtures for fusion welding and allied processes
(ISO 14175:2008)
Schweißzusätze - Gase und Mischgase für das Lichtbogenschweißen und verwandte
Prozesse (ISO 14175:2008)
Produits consommables pour le soudage - Gaz et mélanges gazeux pour le soudage par
fusion et les techniques connexes (ISO 14175:2008)
Ta slovenski standard je istoveten z: EN ISO 14175:2008
ICS:
25.160.20 Potrošni material pri varjenju Welding consumables
71.100.20 Industrijski plini Gases for industrial
application
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 14175
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2008
ICS 25.160.20; 71.100.20 Supersedes EN 439:1994
English Version
Welding consumables - Gases and gas mixtures for fusion
welding and allied processes (ISO 14175:2008)
Produits consommables pour le soudage - Gaz et Schweißzusätze - Gase und Mischgase für das
mélanges gazeux pour le soudage par fusion et les Lichtbogenschweißen und verwandte Prozesse (ISO
techniques connexes (ISO 14175:2008) 14175:2008)
This European Standard was approved by CEN on 7 February 2008.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14175:2008: E
worldwide for CEN national Members.
Contents Page
Foreword.3
Foreword
This document (EN ISO 14175:2008) has been prepared by Technical Committee ISO/TC 44 "Welding and
allied processes" in collaboration with Technical Committee CEN/TC 121 “Welding” the secretariat of which is
held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by September 2008, and conflicting national standards shall be
withdrawn at the latest by September 2008.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 439:1994.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 14175:2008 has been approved by CEN as a EN ISO 14175:2008 without any modification.
INTERNATIONAL ISO
STANDARD 14175
Second edition
2008-03-01
Welding consumables — Gases and gas
mixtures for fusion welding and allied
processes
Produits consommables pour le soudage — Gaz et mélanges gazeux
pour le soudage par fusion et les techniques connexes
Reference number
ISO 14175:2008(E)
©
ISO 2008
ISO 14175:2008(E)
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ii © ISO 2008 – All rights reserved
ISO 14175:2008(E)
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 2.
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.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 14175 was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee
SC 3, Welding consumables.
This second edition cancels and replaces the first edition (ISO 14175:1997) which has been technically
revised.
Requests for official interpretations of any aspect of this International Standard should be directed to the
Secretariat of ISO/TC 44/SC 3 via your national standards body, a complete listing of which can be found at
www.iso.org.
INTERNATIONAL STANDARD ISO 14175:2008(E)
Welding consumables — Gases and gas mixtures for fusion
welding and allied processes
1 Scope
This International Standard specifies requirements for the classification of gases and gas mixtures used in
fusion welding and allied processes including, but not limited to:
⎯ tungsten arc welding (Process 141);
⎯ gas-shielded metal arc welding (Process 13);
⎯ plasma arc welding (Process 15);
⎯ plasma arc cutting (Process 83);
⎯ laser welding (Process 52);
⎯ laser cutting (Process 84);
⎯ arc braze welding (Process 972).
NOTE Process numbers are in accordance with ISO 4063.
The purpose of this International Standard is to classify and designate shielding, backing, process and assist
gases in accordance with their chemical properties and metallurgical behaviour as the basis for correct
selection by the user and to simplify the possible qualification procedures.
Gas purities and mixing tolerances are specified as delivered by the supplier (manufacturer) and not at the
point of use.
Gases or gas mixtures may be supplied in either liquid or gaseous form, but when used for welding and allied
processes, the gases are always used in the gaseous form.
Fuel gases, such as acetylene, natural gas, propane, etc., and resonator gases, as used in gas lasers, are not
covered by this International Standard.
Transportation and handling of gases and containers shall be in accordance with local, national and regional
standards and regulations as required.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 31-0:1992, Quantities and units — Part 0: General principles
ISO 14175:2008(E)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
base gas
major or only component of a pure or mixed gas
3.2
classification
number of this International Standard, followed by the symbol for the gas or gas mixture (main group and sub-
group)
3.3
component
gaseous substance that is essential to the performance of the gas mixture
EXAMPLE In a mixture containing 11 % of CO in argon, CO is considered a component while argon is the base
2 2
gas.
3.4
container
vessel used for the shipment and/or storage of pure or mixed gases in a gaseous or liquid state
3.5
designation
classification plus the symbols for all chemical components plus the nominal composition in volume percent
NOTE Symbols for chemical components are given in 5.2.
EXAMPLE A mixture of argon containing 11 % CO is designated as ISO 14175-M20-ArC-11.
3.6
impurity
gaseous substance with chemical composition different from the base gas, component or gas mixture
3.7
mixture
gas consisting of two or more components
3.8
nominal value
percentage value of a component, quoted by the manufacturer or supplier, which corresponds to the general
composition given by the designation
3.9
symbol
main-group and sub-group of a gas mixture
NOTE Symbols are given in Table 2 (see also 5.1).
EXAMPLE The symbol for a mixture of argon containing 11 % CO is M20.
2 © ISO 2008 – All rights reserved
ISO 14175:2008(E)
4 Properties of gases
4.1 General
Relevant physical and chemical properties of the gases considered in this International Standard are given in
Table 1.
Table 1 — Properties of gas components
Relative Boiling point
a
Density
a Reactivity
at 0,101 MPa
density
Chemical
(air = 1,293)
Type of gas during
to air
symbol
welding
3 °C
kg/m
Argon Ar 1,784 1,380 − 185,9 Inert
Helium He 0,178 0,138 Inert
− 268,9
b
CO
Carbon dioxide 1,977 1,529 Oxidizing
− 78,5
O
Oxygen 1,429 1,105 − 183,0 Oxidizing
c
N
Nitrogen 1,251 0,968 − 195,8 Low reactive
H
Hydrogen 0,090 0,070 − 252,8 Reducing
a
Specified at 0 °C and 0,101 MPa (1,013 bar).
b
Sublimation temperature (solid to gas transition temperature).
c
The behaviour of nitrogen varies with different materials and applications. Possible influences must be
considered by the user.
4.2 Rounding-off procedure
For purposes of determining compliance with the requirements of this International Standard, the actual test
values obtained shall be subjected to the rounding-off rules of ISO 31-0:1992, Annex B, Rule A. If the
measured values are obtained by equipment calibrated in units other than those of this International Standard,
the measured values shall be converted to the units of this International Standard before rounding off. If an
average value is to be compared to the requirements of this International Standard, rounding off shall be done
only after calculating the average. In the case where the testing standard cited in the normative references of
this International Standard contains instructions for rounding off that conflict with the instructions of this
International Standard, the rounding-off requirements of the testing standard shall apply. The rounded-off
results shall fulfill the requirements of the appropriate table for the classification under test.
5 Classification and designation
5.1 Classification
5.1.1 General
Gases and gas mixtures shall be classified by the number of this International Standard, followed by the
symbol for the gas in accordance with Table 2.
NOTE The classification is based on the reactivity of the gas or gas mixture.
ISO 14175:2008(E)
5.1.2 Main group
The letter codes and numbers used for the main groups are:
⎯ I: inert gases and inert gas mixtures;
⎯ M1, M2 and M3: oxidising mixtures containing oxygen and/or carbon dioxide;
⎯ C: highly oxidising gas and highly oxidising mixtures;
⎯ R: reducing gas mixtures;
⎯ N: low reactive gas or reducing gas mixtures, containing nitrogen;
⎯ O: oxygen;
⎯ Z: gas mixtures containing components not listed or mixtures outside the composition ranges listed in
Table 2.
5.1.3 Sub-group
The main groups, except Z, are divided into sub-groups based on the presence and level of different
components having an influence on the reactivity (see Table 2). The values indicated in Table 2 are nominal
values.
5.1.4 Classification examples
EXAMPLE 1 For a gas mixture containing 6 % carbon dioxide, 4 % oxygen in argon:
Classification: ISO 14175 – M
...
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