EN ISO/ASTM 52941:2020

SLOVENSKI STANDARD
01-januar-2021
Dodajalna izdelava - Zmogljivost in zanesljivost sistema - Preskusi sprejemljivosti
za stroje za spajanje kovinskega prahu na podlagi z laserskim žarkom za letalsko
in vesoljsko industrijo (ISO/ASTM 52941:2020)
Additive manufacturing - System performance and reliability - Acceptance tests for laser
metal powder-bed fusion machines for metallic materials for aerospace application
(ISO/ASTM 52941:2020)
Additive Fertigung - Systemleistung und Betriebssicherheit - Abnahmeprüfung von
pulverbettbasierten Laserstrahlanlagen für metallische Werkstoffe für Luft- und
Raumfahrtanwendungen (ISO/ASTM 52941:2020)
Fabrication additive - Performance et fiabilité du système - Essais de réception pour
machines de fusion laser sur lit de poudre pour les matériaux métalliques pour
l’application aérospatiale (ISO/ASTM 52941:2020)
Ta slovenski standard je istoveten z: EN ISO/ASTM 52941:2020
ICS:
25.030 3D-tiskanje Additive manufacturing
49.025.01 Materiali za letalsko in Materials for aerospace
vesoljsko gradnjo na splošno construction in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO/ASTM 52941
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2020
EUROPÄISCHE NORM
ICS 25.030
English Version
Additive manufacturing - System performance and
reliability - Acceptance tests for laser metal powder-bed
fusion machines for metallic materials for aerospace
application (ISO/ASTM 52941:2020)
Fabrication additive - Performance et fiabilité du Additive Fertigung - Systemleistung und
système - Essais de réception pour machines de fusion Betriebssicherheit - Abnahmeprüfung von
laser sur lit de poudre pour les matériaux métalliques pulverbettbasierten Laserstrahlanlagen für metallische
pour l'application aérospatiale (ISO/ASTM Werkstoffe für Luft- und Raumfahrtanwendungen
52941:2020) (ISO/ASTM 52941:2020)
This European Standard was approved by CEN on 21 November 2020.

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-CENELEC 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-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO/ASTM 52941:2020 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO/ASTM 52941:2020) has been prepared by Technical Committee ISO/TC 261
"Additive manufacturing" in collaboration with Technical Committee CEN/TC 438 “Additive
Manufacturing” the secretariat of which is held by AFNOR.
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 May 2021, and conflicting national standards shall be
withdrawn at the latest by May 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
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,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO/ASTM 52941:2020 has been approved by CEN as EN ISO/ASTM 52941:2020 without
any modification.
INTERNATIONAL ISO/ASTM
STANDARD 52941
First edition
2020-11
Additive manufacturing — System
performance and reliability —
Acceptance tests for laser metal
powder-bed fusion machines for
metallic materials for aerospace
application
Fabrication additive — Performance et fiabilité du système — Essais
de réception pour machines de fusion laser sur lit de poudre pour les
matériaux métalliques pour l’application aérospatiale
Reference number
ISO/ASTM 52941:2020(E)
©
ISO/ASTM International 2020
ISO/ASTM 52941:2020(E)
© ISO/ASTM International 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be
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Published in Switzerland
ii © ISO/ASTM International 2020 – All rights reserved

ISO/ASTM 52941:2020(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Equipment . 2
5 Environmental and operational conditions . 2
6 Qualification testing . 2
6.1 General . 2
6.2 Laser beam tests . 2
6.2.1 Testing the laser power for continuous wave lasers . 2
6.2.2 Testing the laser power stability for continuous wave lasers . 3
6.2.3 Testing of pulsed wave lasers . 3
6.2.4 Evaluation of the laser beam characteristics . 3
6.2.5 Evaluation of the minimum laser beam waist position in different working
plane locations . 3
6.2.6 Evaluation of the thermal stability of the minimum beam waist position . 3
6.2.7 Testing the laser beam position . 4
6.2.8 Trajectory accuracy . 4
6.2.9 Scanning speed . 4
6.2.10 Requirements for equipment with multiple laser beam sources . 4
6.3 Mechanical function test . 5
6.3.1 General. 5
6.3.2 Build platform positioning . 5
6.3.3 Feeding platform positioning . 5
6.3.4 Other powder feed processing mechanics. 5
6.3.5 Movement of the powder spreading device . 5
6.4 Heating system . 5
6.5 Atmosphere inside the working space . 5
6.6 Data recording . 6
6.7 Safety systems . 6
6.8 Optional tests . 6
6.8.1 Demonstrators and test artifacts . 6
6.8.2 Build area assessment . 6
6.8.3 Gas flow test by hot wire anemometer . 7
6.9 Requalification . 8
7 Test report . 8
Annex A (informative) Example of a test report .10
Annex B (informative) Geometric pattern for the trajectory accuracy test .11
Bibliography .12
© ISO/ASTM International 2020 – All rights reserved iii

ISO/ASTM 52941:2020(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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
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. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by ISO/TC 261, Additive manufacturing, in cooperation with ASTM F 42,
Additive Manufacturing Technologies, on the basis of a partnership agreement between ISO and ASTM
International with the aim to create a common set of ISO/ASTM standards on additive manufacturing.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO/ASTM International 2020 – All rights reserved

INTERNATIONAL STANDARD ISO/ASTM 52941:2020(E)
Additive manufacturing — System performance and
reliability — Acceptance tests for laser metal powder-
bed fusion machines for metallic materials for aerospace
application
1 Scope
This document specifies requirements and test methods for the qualification and re-qualification of
laser beam machines for metal powder bed fusion additive manufacturing for aerospace applications.
It can also be used to verify machine features during periodic inspections or following maintenance
and repair activities.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 11146 (all parts), Lasers and laser-related equipment — Test methods for laser beam widths, divergence
angles and beam propagation ratios
ISO 11554, Optics and photonics — Lasers and laser-related equipment — Test methods for laser beam
power, energy and temporal characteristics
ISO/ASTM 52900, Additive manufacturing — General principles — Part 1: Fundamentals and vocabulary
ISO/ASTM 52921, Standard terminology for additive manufacturing — Coordinate systems and test
methodologies
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/ASTM 52900, ISO/ASTM 52921
and the
...