EN ISO/ASTM 52911-2:2019

Additive manufacturing - Design - Part 2: Laser-based powder bed fusion of polymers (ISO/ASTM 52911-2:2019)

This document specifies the features of laser-based powder bed fusion of polymers (LB-PBF/P) and provides detailed design recommendations.
Some of the fundamental principles are also applicable to other additive manufacturing (AM) processes, provided that due consideration is given to process-specific features.
This document also provides a state-of-the-art review of design guidelines associated with the use of powder bed fusion (PBF) by bringing together relevant knowledge about this process and by extending the scope of ISO/ASTM 52910.

Additive Fertigung - Konstruktion - Teil 2: Laserbasierte Pulverbettfusion von Polymeren (ISO/ASTM 52911-2:2019)

Dieses Dokument legt die Merkmale der laserbasierten Pulverbettfusion von Polymeren (LB PBF P) fest und bietet detaillierte Konstruktionsempfehlungen.
Einige der grundlegenden Prinzipien gelten auch für andere additive Fertigungsverfahren (AM Verfahren), vorausgesetzt, dass die prozessspezifischen Merkmale berücksichtigt werden.
Dieses Dokument bietet eine Überprüfung von Konstruktionsleitfäden auf dem Stand der Technik im Zusammenhang mit pulverbettbasiertem Schmelzen (PBF), indem relevantes Wissen zu diesem Verfahren zusammengeführt und der Anwendungsbereich von ISO/ASTM 52910 erweitert wird.

Fabrication additive - Conception - Partie 2: Fusion laser sur lit de poudre polymère (ISO/ASTM 52911-2:2019)

Le présent document spécifie les caractéristiques de la fusion laser sur lit de poudre polymère (LB-PBF/P) et fournit des recommandations détaillées de conception.
Certains des principes fondamentaux sont également applicables à d'autres procédés de fabrication additive (FA), sous réserve que les caractéristiques spécifiques à un procédé soient dûment prises en compte.
Le présent document fournit également un État de l'Art des lignes directrices de conception associées à l'utilisation d'une fusion sur lit de poudre (PBF), en compilant des connaissances pertinentes sur ce procédé et en élargissant le domaine d'application de l'ISO/ASTM 52910.

Aditivna proizvodnja - Konstruiranje - 2. del: Selektivno lasersko sintranje polimerov (ISO/ASTM 52911-2:2019)

Ta standard podaja priporočila za izbiro materiala, zahteve za proizvodnjo in izdelavo, preskušanje in kvalifikacijo jeklenih struktur ter sestavnih delov za obrate za predelavo nafte in zemeljskega plina na morju in kopnem, ki delujejo v arktičnem okolju ter drugih hladnih okoljih. Ta dokument se uporablja kot dodatek k obstoječim standardom za jeklene strukture, za katere določeni obratovalni pogoji na arktičnem območju niso zadovoljivo obravnavani. Ta dokument podaja določene zahteve, ki zagotavljajo varno delovanje v zvezi z nevarnostjo lomov pri nizkih temperaturah. Te zahteve vplivajo na izbiro kakovostnega razreda materiala in razreda načrtovanja ter na tehnične dobavne pogoje za jeklo. Prav tako vplivajo na zahteve glede izdelave ter preskušanja in kvalifikacije. V tem dokumentu so tudi podana priporočila: – za ublažitev operacijskih in integracijskih vidikov, povezanih s kopičenjem snega in ledu na palubnih konstrukcijah; – za upoštevanje določenih obratovalnih pogojev v arktičnem območju pri ocenjevanju korozije in zahtev za korozijske zaščitne sisteme; – za določene obratovalne zahteve, ki zagotavljajo varno obratovanje v arktičnih območjih. Zahteve v tem dokumentu se uporabljajo pri vseh obratovalnih temperaturah, vendar posamezne zahteve, ki so povezane z zmanjšano zmogljivostjo (izguba moči) pri visokih temperaturah, niso obravnavane. Obstajajo lahko omejitve za ustrezne najnižje načrtovane temperature, ki jih povzroči zmožnost učinkovitosti materiala pri nizki temperaturi, vendar te omejitve ne predstavljajo omejitev za področje uporabe tega dokumenta. Za namene praktične uporabe tega dokumenta so nizke temperature opredeljene kot najnižje pričakovane temperature med obratovanjem (LAST) pod –10 °C.

General Information

• Status: Published
• Publication Date: 22-Oct-2019
• Withdrawal Date: 29-Apr-2020
• ICS: 25.030 - Additive manufacturing
• Technical Committee: CEN/TC 438 - Additive Manufacturing
• Drafting Committee: CEN/TC 438 - Additive Manufacturing
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 23-Oct-2019
• Completion Date: 23-Oct-2019
• Ref Project: SIST EN ISO/ASTM 52911-2:2020 - Additive manufacturing - Design - Part 2: Laser-based powder bed fusion of polymers (ISO/ASTM 52911-2:2019)

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2020
Aditivna proizvodnja - Načrtovanje - 2. del: Laserska fuzija polimernih prahastih
plasti (ISO/ASTM 52911-2:2019)
Additive manufacturing - Design - Part 2: Laser-based powder bed fusion of polymers
(ISO/ASTM 52911-2:2019)
Additive Fertigung - Technische Konstruktionsrichtlinie für Pulverbettfusion - Teil 2:
Laserbasierte Pulverbettfusion von Polymeren (ISO/ASTM 52911-2:2019)
Fabrication additive - Conception - Partie 2: Fusion laser sur lit de poudre polymère
(ISO/ASTM 52911-2:2019)
Ta slovenski standard je istoveten z: EN ISO/ASTM 52911-2:2019
ICS:
25.030 3D-tiskanje Additive manufacturing
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO/ASTM 52911-2
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2019
EUROPÄISCHE NORM
ICS 25.030
English Version
Additive manufacturing - Design - Part 2: Laser-based
powder bed fusion of polymers (ISO/ASTM 52911-2:2019)
Fabrication additive - Conception - Partie 2: Fusion Additive Fertigung - Konstruktion - Teil 2:
laser sur lit de poudre polymère (ISO/ASTM 52911- Laserbasierte Pulverbettfusion von Polymeren
2:2019) (ISO/ASTM 52911-2:2019)
This European Standard was approved by CEN on 8 September 2019.

This European Standard was corrected and reissued by the CEN-CENELEC Management Centre on 6 November 2019.

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 NORMALISATIO N

EUROPÄISCHES KOMITEE FÜR NORMUN G

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO/ASTM 52911-2:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO/ASTM 52911-2:2019) 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 April 2020, and conflicting national standards shall be
withdrawn at the latest by April 2020.
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 52911-2:2019 has been approved by CEN as EN ISO/ASTM 52911-2:2019
without any modification.
INTERNATIONAL ISO/ASTM
STANDARD 52911-2
First edition
2019-09
Additive manufacturing — Design —
Part 2:
Laser-based powder bed fusion of
polymers
Fabrication additive — Conception —
Partie 2: Fusion laser sur lit de poudre polymère
Reference number
ISO/ASTM 52911-2:2019(E)
©
ISO/ASTM International 2019
ISO/ASTM 52911-2:2019(E)
© ISO/ASTM International 2019
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: [phone] Phone: [phone]
Fax: [phone] Fax: [phone]
Email: [e-mail] Email: [e-mail]
Website: www.iso.org Website: www.astm.org
Published in Switzerland
ii © ISO/ASTM International 2019 – All rights reserved

ISO/ASTM 52911-2:2019(E)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviated terms . 2
4.1 Symbols . 2
4.2 Abbreviated terms . 3
5 Characteristics of powder bed fusion (PBF) processes . 3
5.1 General . 3
5.2 Size of the parts . 3
5.3 Benefits to be considered in regard to the PBF process . 4
5.4 Limitations to be considered in regard to the PBF process . 4
5.5 Economic and time efficiency . 5
5.6 Feature constraints (islands, overhang, stair-step effect) . 5
5.6.1 General. 5
5.6.2 Islands . 5
5.6.3 Overhang . 6
5.6.4 Stair-step effect . 6
5.7 Dimensional, form and positional accuracy . 6
5.8 Data quality, resolution, representation . 6
6 Design guidelines for laser-based powder bed fusion of polymers (LB-PBF/P) .7
6.1 General . 7
6.2 Material and structural characteristics . 7
6.3 Anisotropy of the material characteristics. 8
6.4 Build orientation, positioning and arrangement . 9
6.4.1 General. 9
6.4.2 Powder coating . 9
6.4.3 Part location in the build chamber . 9
6.4.4 Oversintering . 9
6.4.5 Packing parts efficiently in the build chamber . 9
6.5 Surface roughness .10
6.6 Post-production finishing .10
6.7 Design considerations.11
6.7.1 Allowing for powder removal .11
6.7.2 Reducing warpage .11
6.7.3 Wall thickness .11
6.7.4 Gaps, cylinders and holes .11
6.7.5 Lattice structures .12
6.7.6 Fluid channels .12
6.7.7 Springs and elastic elements .13
6.7.8 Connecting elements and fasteners.13
6.7.9 Static assemblies .14
6.7.10 Movable assemblies .15
6.7.11 Bearings .15
6.7.12 Joints .
...

SLOVENSKI STANDARD
01-januar-2020
Aditivna proizvodnja - Konstruiranje - 2. del: Selektivno lasersko sintranje
polimerov (ISO/ASTM 52911-2:2019)
Additive manufacturing - Design - Part 2: Laser-based powder bed fusion of polymers
(ISO/ASTM 52911-2:2019)
Additive Fertigung - Technische Konstruktionsrichtlinie für Pulverbettfusion - Teil 2:
Laserbasierte Pulverbettfusion von Polymeren (ISO/ASTM 52911-2:2019)
Fabrication additive - Conception - Partie 2: Fusion laser sur lit de poudre polymère
(ISO/ASTM 52911-2:2019)
Ta slovenski standard je istoveten z: EN ISO/ASTM 52911-2:2019
ICS:
25.030 3D-tiskanje Additive manufacturing
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO/ASTM 52911-2
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2019
EUROPÄISCHE NORM
ICS 25.030
English Version
Additive manufacturing - Design - Part 2: Laser-based
powder bed fusion of polymers (ISO/ASTM 52911-2:2019)
Fabrication additive - Conception - Partie 2: Fusion Additive Fertigung - Konstruktion - Teil 2:
laser sur lit de poudre polymère (ISO/ASTM 52911- Laserbasierte Pulverbettfusion von Polymeren
2:2019) (ISO/ASTM 52911-2:2019)
This European Standard was approved by CEN on 8 September 2019.

This European Standard was corrected and reissued by the CEN-CENELEC Management Centre on 6 November 2019.

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 NORMALISATIO N

EUROPÄISCHES KOMITEE FÜR NORMUN G

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO/ASTM 52911-2:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO/ASTM 52911-2:2019) 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 April 2020, and conflicting national standards shall be
withdrawn at the latest by April 2020.
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 52911-2:2019 has been approved by CEN as EN ISO/ASTM 52911-2:2019
without any modification.
INTERNATIONAL ISO/ASTM
STANDARD 52911-2
First edition
2019-09
Additive manufacturing — Design —
Part 2:
Laser-based powder bed fusion of
polymers
Fabrication additive — Conception —
Partie 2: Fusion laser sur lit de poudre polymère
Reference number
ISO/ASTM 52911-2:2019(E)
©
ISO/ASTM International 2019
ISO/ASTM 52911-2:2019(E)
© ISO/ASTM International 2019
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: [phone] Phone: [phone]
Fax: [phone] Fax: [phone]
Email: [e-mail] Email: [e-mail]
Website: www.iso.org Website: www.astm.org
Published in Switzerland
ii © ISO/ASTM International 2019 – All rights reserved

ISO/ASTM 52911-2:2019(E)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviated terms . 2
4.1 Symbols . 2
4.2 Abbreviated terms . 3
5 Characteristics of powder bed fusion (PBF) processes . 3
5.1 General . 3
5.2 Size of the parts . 3
5.3 Benefits to be considered in regard to the PBF process . 4
5.4 Limitations to be considered in regard to the PBF process . 4
5.5 Economic and time efficiency . 5
5.6 Feature constraints (islands, overhang, stair-step effect) . 5
5.6.1 General. 5
5.6.2 Islands . 5
5.6.3 Overhang . 6
5.6.4 Stair-step effect . 6
5.7 Dimensional, form and positional accuracy . 6
5.8 Data quality, resolution, representation . 6
6 Design guidelines for laser-based powder bed fusion of polymers (LB-PBF/P) .7
6.1 General . 7
6.2 Material and structural characteristics . 7
6.3 Anisotropy of the material characteristics. 8
6.4 Build orientation, positioning and arrangement . 9
6.4.1 General. 9
6.4.2 Powder coating . 9
6.4.3 Part location in the build chamber . 9
6.4.4 Oversintering . 9
6.4.5 Packing parts efficiently in the build chamber . 9
6.5 Surface roughness .10
6.6 Post-production finishing .10
6.7 Design considerations.11
6.7.1 Allowing for powder removal .11
6.7.2 Reducing warpage .11
6.7.3 Wall thickness .11
6.7.4 Gaps, cylinders and holes .11
6.7.5 Lattice structures .12
6.7.6 Fluid channels .12
6.7.7 Springs and elastic elements .13
6.7.8 Connecting elements and fasteners.13
6.7.9 Static assemblies .14
6.7.10 Movable assemblies .15
6.7.11 Bearings .15
6.7.12 Joints .
...