EN ISO/ASTM 52925:2022

SLOVENSKI STANDARD
01-marec-2023
Aditivna proizvodnja polimerov - Surovine - Kvalifikacija materialov za lasersko
spajanje prahu v postelji (ISO/ASTM 52925:2022)
Additive manufacturing of polymers - Feedstock materials - Qualification of materials for
laser-based powder bed fusion of parts (ISO/ASTM 52925:2022)
Additive Fertigung von Polymeren - Qualifizierungsgrundsätze - Klassifizierung von
Teileigenschaften (ISO/ASTM 52925:2022)
Fabrication additive de polymères - Matières premières - Qualification des matériaux
pour la fusion laser de pièces sur lit de poudre (ISO/ASTM 52925:2022)
Ta slovenski standard je istoveten z: EN ISO/ASTM 52925:2022
ICS:
25.030 3D-tiskanje Additive manufacturing
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO/ASTM 52925
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2022
EUROPÄISCHE NORM
ICS 25.030
English Version
Additive manufacturing of polymers - Feedstock materials
- Qualification of materials for laser-based powder bed
fusion of parts (ISO/ASTM 52925:2022)
Fabrication additive de polymères - Matières Additive Fertigung von Polymeren
premières - Qualification des matériaux pour la fusion Qualifizierungsgrundsätze - Klassifizierung von
laser de pièces sur lit de poudre (ISO/ASTM Teileigenschaften (ISO/ASTM 52925:2022)
52925:2022)
This European Standard was approved by CEN on 5 April 2022.

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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO/ASTM 52925:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO/ASTM 52925:2022) 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 November 2022, and conflicting national standards
shall be withdrawn at the latest by November 2022.
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.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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 52925:2022 has been approved by CEN as EN ISO/ASTM 52925:2022 without
any modification.
INTERNATIONAL ISO/ASTM
STANDARD 52925
First edition
2022-04
Additive manufacturing of polymers —
Feedstock materials — Qualification of
materials for laser-based powder bed
fusion of parts
Fabrication additive de polymères — Matières premières —
Qualification des matériaux pour la fusion laser de pièces sur lit de
poudre
Reference number
ISO/ASTM 52925:2022(E)
© ISO/ASTM International 2022
ISO/ASTM 52925:2022(E)
© ISO/ASTM International 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester. In the United States, such requests should be sent to ASTM International.
ISO copyright office ASTM International
CP 401 • Ch. de Blandonnet 8 100 Barr Harbor Drive, PO Box C700
CH-1214 Vernier, Geneva West Conshohocken, PA 19428-2959, USA
Phone: +41 22 749 01 11 Phone: +610 832 9634
Fax: +610 832 9635
Email: copyright@iso.org Email: khooper@astm.org
Website: www.iso.org Website: www.astm.org
Published in Switzerland
ii
© ISO/ASTM International 2022 – All rights reserved

ISO/ASTM 52925:2022(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviations .1
4.1 Symbols . 1
4.2 Abbreviations . 2
5 Sampling . 2
5.1 General . 2
5.2 Characterisation of virgin powder and powder blends . 2
5.3 Characterisation of used powder . 2
6 Factory test report . 3
6.1 General . 3
6.2 Particle size distribution . 3
6.3 Residual monomer content/extract content . 3
6.4 Supplementary data . 3
7 Factors influencing processability .4
7.1 General . 4
7.2 Spreadability of the powder . 4
7.3 Relative humidity of the powder (surface moisture) . 4
7.4 Particle size distribution . 5
8 Factors affecting part quality . 5
8.1 General . 5
8.2 Melting behaviour, melt flow and MVR. 6
8.2.1 General . 6
8.2.2 Laboratory methods . 6
8.2.3 Melt volume-flow rate (MVR) . 6
8.3 Melting temperature and recrystallisation temperature . 7
Annex A (informative) Hausner ratio, H . 9
R
Annex B (informative) Determination of the melt volume-flow rate (MVR) .12
Annex C (informative) Round robin MVR test .15
Bibliography .18
iii
© ISO/ASTM International 2022 – All rights reserved

ISO/ASTM 52925:2022(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 O
...