svensk standard ss-en iso 13919-1:2019

Språk: engelska / EnglishUtgåva: 2

SS-EN ISO 13919-1:2019SVENSK STANDARD

Svetsning – Elektronstråle- och lasersvetsade förband – Riktlinjer för kvalitetsnivåer för diskonti- nuiteter och formavvikelser – Del 1: Stål, nickel, titan och dess legeringar (ISO 13919-1:2019)

Electron and laser-beam welded joints – Requirements and recommendations on quality levels for imperfections – Part 1: Steel, nickel, titanium and their alloys (ISO 13919-1:2019)

This preview is downloaded from www.sis.se. Buy the entireThis preview is downloaded from www.sis.se. Buy the entireThis preview is downloaded from www.sis.se. Buy the entireThis preview is downloaded from www.sis.se. Buy the entirestandard via https://www.sis.se/std-80018314standard via https://www.sis.se/std-80018314standard via https://www.sis.se/std-80018314standard via https://www.sis.se/std-80018314

Fastställd: 2019-11-28ICS: 25.160.40

© Copyright/Upphovsrätten till denna produkt tillhör Svenska institutet för standarder, Stockholm, Sverige. Upphovsrätten och användningen av denna produkt regleras i slutanvändarlicensen som återfinns på sis.se/slutanvandarlicens och som du automatiskt blir bunden av när du använder produkten. För ordlista och förkortningar se sis.se/ordlista.

© Copyright Svenska institutet för standarder, Stockholm, Sweden. All rights reserved. The copyright and use of this product is governed by the end-user licence agreement which you automatically will be bound to when using the product. You will find the licence at sis.se/enduserlicenseagreement.

Upplysningar om sakinnehållet i standarden lämnas av Svenska institutet för standarder, telefon 08 - 555 520 00. Standarder kan beställas hos SIS som även lämnar allmänna upplysningar om svensk och utländsk standard.

Standarden är framtagen av kommittén för AGS 446 Kvalitetskrav för svetsade produkter, SIS / TK 134 / AG 06.

Har du synpunkter på innehållet i den här standarden, vill du delta i ett kommande revideringsarbete eller vara med och ta fram andra standarder inom området? Gå in på www.sis.se - där hittar du mer information.

Den här standarden kan hjälpa dig att effektivisera och kvalitetssäkra ditt arbete. SIS har fler tjänster att erbjuda dig för att underlätta tillämpningen av standarder i din verksamhet.

SIS AbonnemangSnabb och enkel åtkomst till gällande standard med SIS Abonnemang, en prenumerationstjänst genom vilken din orga-nisation får tillgång till all världens standarder, senaste uppdateringarna och där hela din organisation kan ta del av innehållet i prenumerationen.

Utbildning, event och publikationerVi erbjuder även utbildningar, rådgivning och event kring våra mest sålda standarder och frågor kopplade till utveckling av standarder. Vi ger också ut handböcker som underlättar ditt arbete med att använda en specifik standard.

Vill du delta i ett standardiseringsprojekt?Genom att delta som expert i någon av SIS 300 tekniska kommittéer inom CEN (europeisk standardisering) och/eller ISO (internationell standardisering) har du möjlighet att påverka standardiseringsarbetet i frågor som är viktiga för din organisation. Välkommen att kontakta SIS för att få veta mer!

KontaktSkriv till [email protected], besök sis.se eller ring 08 - 555 523 10

This preview is downloaded from www.sis.se. Buy the entire standard via https://www.sis.se/std-80018314

https://www.sis.se/slutanvandarlicens

https://www.sis.se/ordlista

https://www.sis.se/enduserlicenseagreement

https://www.sis.se

mailto:kundservice%40sis.se?subject=kontakt

https://www.sis.se

Europastandarden EN ISO 13919-1:2019 gäller som svensk standard. Detta dokument innehåller den officiella engelska versionen av EN ISO 13919-1:2019.

Denna standard ersätter SS-EN ISO 13919-1, utgåva 1.

The European Standard EN ISO 13919-1:2019 has the status of a Swedish Standard. This document contains the official version of EN ISO 13919-1:2019.

This standard supersedes the SS-EN ISO 13919-1, edition 1.


EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM

EN ISO 13919-1 November 2019

ICS 25.160.40 Supersedes EN ISO 13919-1:1996English Version Electron and laser-beam welded joints - Requirements and recommendations on quality levels for imperfections - Part 1: Steel, nickel, titanium and their alloys (ISO 13919-1:2019) Assemblages soudés par faisceau d'électrons et par faisceau laser - Exigences et recommandations sur les niveaux de qualité des défauts - Partie 1: Acier, nickel, titane et leurs alliages (ISO 13919-1:2019)

Elektronen- und Laserstrahl-Schweißverbindungen - Leitfaden für Bewertungsgruppen für Unregelmäßigkeiten - Teil 1: Stahl, Nickel, Titan und seine Legierungen (ISO 13919-1:2019) This European Standard was approved by CEN on 21 October 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 C O M I T É E U R O P É E N D E N O R M A L I S A T I O N E U R O P Ä I S C H E S K O M I T E E F Ü R N O R M U N 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 worldwide for CEN national Members. Ref. No. EN ISO 13919-1:2019 E


European foreword ..............................................................................................................................................................................................................ivIntroduction ..................................................................................................................................................................................................................................v1 Scope ................................................................................................................................................................................................................................. 12 Normative references ...................................................................................................................................................................................... 13 Termsanddefinitions ..................................................................................................................................................................................... 14 Symbols (and abbreviated terms) ...................................................................................................................................................... 25 Assessment of imperfections (adapted to ISO 5817 and ISO 12932) ............................................................ 2Annex A (informative) Examples of determination of percentage (%) porosity .................................................12Annex B (informative) Additional information for use of this document ...................................................................14Bibliography .............................................................................................................................................................................................................................15

iii

Contents Page

SS-EN ISO 13919-1:2019 (E)


EN ISO 13919-1:2019 (E)

iv

European foreword

This document (EN ISO 13919-1:2019) has been prepared by Technical Committee ISO/TC 44 "Welding and allied processes" in collaboration with Technical Committee CEN/TC 121 “Welding and allied processes” 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 May 2020, and conflicting national standards shall be withdrawn at the latest by May 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.

This document supersedes EN ISO 13919-1:1996.

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 13919-1:2019 has been approved by CEN as EN ISO 13919-1:2019 without any modification.


Introduction

This document is intended to be used as a reference in drafting application codes and/or other application standards. It contains a simplified selection of laser and electron beam welding imperfections based on the designations given in ISO 6520-1.

Limits on some of the individual imperfections described in ISO 6520-1 have been prescribed directly whereas some have been grouped together. The basic numerical referencing system from ISO 6520-1 has been used.

The quality levels given in this document provide basic reference data and are not specifically related to any particular application. They refer to the types of welded joint in fabrication and not to the complete product or component itself. Therefore, it is possible that different quality levels are applied to individual welded joints in the same product or component.

It would normally be expected that, for a particular welded joint, the dimensional limits for imperfections can all be covered by specifying one quality level. In some cases, it can be necessary to specify different quality levels for different imperfections in the same welded joint.

The choice of quality level for any application is expected to take account of design considerations, subsequent processing (e.g. surfacing), mode of stressing (e.g. static, dynamic), service requirements and conditions (e.g. temperature, pressure or vacuum levels, environment) and consequences of failure. These considerations may lead to the need to include additional requirements on weld quality outside of those referred to in this document. Economic factors are also important and are intended to include not only the cost of welding, but also of inspection, test and repair.

Although this document includes types of imperfection relevant to the beam welding processes given in the scope, only those which are applicable to the process and application in question need to be considered.

Imperfections are quoted in terms of their actual dimensions, and their detection and evaluation can require the use of one or more methods of non-destructive testing. The detection and sizing of imperfections are dependent on the inspection methods and the extent of testing specified in the application standard or contract.

The values given for imperfections are for welds produced using normal welding practice. More stringent requirements as stated in quality level B can include the need for additional manufacturing processes, e.g. grinding, dressing.

v

SS-EN ISO 13919-1:2019 (E)


Electron and laser-beam welded joints — Requirements and recommendations on quality levels for imperfections —

Part 1: Steel, nickel, titanium and their alloys

1 Scope

This document gives requirements and recommendations on levels of imperfections in electron and laser-beam welded joints in steel, nickel, titanium and their alloys. Three levels are given in such a way as to permit application for a wide range of welded fabrications. Quality level B corresponds to the highest requirement of the finished weld. The levels refer to production quality and not to the fitness-for-purpose of the product manufactured.

This document applies to electron and laser beam welding of:

— steel, nickel, titanium and their alloys;

— all types of welds welded with or without additional filler wire;

— materials equal to or above 0,5 mm thickness for electron and laser beam welding.

The purpose of this document is to define the dimensions of typical imperfections which can be expected in normal fabrication. It can be used within a quality system for the production of welded joints. It provides three sets of dimensional values from which a selection can be made for a particular application. The quality level necessary in each case is defined by the application standard or the responsible designer in conjunction with the manufacturer, user and/or other parties concerned. The quality level is expected to be prescribed prior to the start of production, preferably at the enquiry or order stage. For special purposes, additional details may need to be prescribed.

When significant deviations from the joint geometries and dimensions stated in this document are present in the welded product, it is necessary to evaluate to what extent the provisions of this document can apply.

Metallurgical aspects, e.g. grain size, hardness are not covered by this document.

This document does not address the methods used for the detection of imperfections. This document is directly applicable to visual examination of welds and does not include details of recommended methods of detection or sizing by other non-destructive means. There are difficulties in using these limits to establish appropriate criteria applicable to non-destructive testing methods, such as ultrasonic, radiographic and penetrant testing, and they can need to be supplemented by additional requirements for inspection, examination and testing.

2 Normative references

There are no normative references in this document.

3 Termsanddefinitions

No terms and definitions are listed in this document.

1

SS-EN ISO 13919-1:2019 (E)


ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https: //www .iso .org/obp

— IEC Electropedia: available at http: //www .electropedia .org/

4 Symbols (and abbreviated terms)

For the purposes of this document, the following symbols apply.

∆L distance between two imperfections (pore, cavity)

b width of weld

b1 required width of weld

d maximum size of an imperfection (pore, cavity)

f projected areas of pores or cavities

h size of the imperfection (height, width)

h1 deviation from the required weld penetration

l length of imperfection (measured in maximum size direction)

L weld length under consideration (weld length examined)

Lc length of combined porosity (affected weld length)

s weld penetration

s1 weld penetration in T-joint

t workpiece thickness

β angle of angular misalignment

5 Assessment of imperfections (adapted to ISO 5817 and ISO 12932)

Limits to imperfections are given in Table 1. These limits apply to the finished weld and may also be applied to an intermediate stage of fabrication.

A welded joint should normally be assessed separately for each individual type of imperfection.

Any two adjacent imperfections separated by a distance less than the major dimension of the smaller imperfection shall be considered a single imperfection.

For joints made of base materials having different thicknesses, the evaluation of the defects shall be based on the thickness of the thinnest base material. For stake welds made in parallel joints and lap joints, the evaluation of the defects shall be based on the sum of the thickness of the base materials for full penetration welds, and on the designed fusion penetration for partial penetration welds.

Annexes A and B include examples and additional informations for using this document.

2

SS-EN ISO 13919-1:2019 (E)


https://www.iso.org/obp/ui

http://www.electropedia.org/

Tabl

e 1

— Im

perf

ecti

ons

No.

ISO

652

0-1

refe

renc

eIm

perf

ecti

on

desi

gnat

ion

Rem

arks

t m

mLi

mit

s fo

r im

perf

ecti

ons

for

qual

ity

leve

lsD

CB

1 Su

rfac

e im

perf

ecti

ons

1.1

100

Crac

kAl

l typ

es o

f cra

cks e

xcep

t cra

ter c

rack

s (m

agni

ficat

ion

less

than

10×

)≥

0,5

Not

per

mit

ted

Not

per

mit

ted

Not

per

mit

ted

1.2

104

Crat

er c

rack

Mag

nific

atio

n le

ss th

an 1

0×≥

0,5

Perm

itte

dN

ot p

erm

itte

dN

ot p

erm

itte

d1.

320

17

516

Surf

ace

pore

Root

por

osit

y

Max

imum

dim

ensi

on o

f a si

ngle

por

e fo

r

Spon

gy fo

rmat

ion

at th

e ro

ot o

f a w

eld

due

to

bubb

ling

of th

e w

eld

met

al a

t the

mom

ent o

f so

lidifi

catio

n (e

.g. l

ack

of g

as b

acki

ng)

≥ 0,

5d

≤ 0,

3 s,

but m

ax.

3 m

mN

ot p

erm

itte

dN

ot p

erm

itte

d

1.4

2025

End

crat

er p

ipe

(lon

gitu

dina

l sec

tion)

≥0

,5

≤ 3

h ≤

0,4

th

≤ 0,

3 t

h ≤

0,2

t

>3

h ≤

0,3

t + 0

,3 m

mh

≤ 0,

2 t +

0,3

mm

h ≤

0,1

t + 0

,3 m

m

1.5

401

Lack

of f

usio

n (i

ncom

plet

e fu

sion

)

All t

ypes

of l

ack

of fu

sion

s (m

agni

ficat

ion

less

than

10×

)≥

0,5

l ≤ 0

,25

s or 1

mm

, w

hich

ever

is sm

alle

rN

ot p

erm

itte

dN

ot p

erm

itte

d

1.6

4021

Inco

mpl

ete

root

pe

netr

atio

n—

≥ 0,

5Sh

ort i

mpe

rfec

tions

: l ≤

0,2

5 s o

r 1 m

m,

whi

chev

er is

smal

ler

Not

per

mit

ted

Not

per

mit

ted

1.7

5011

5012

Cont

inuo

us

unde

rcut

Inte

rmit

tent

un

derc

ut

This

is n

ot re

gard

ed a

s a s

yste

mat

ic im

perf

ectio

n.

≥ 0,

5h

≤ 0,

15 t,

bu

t max

. 1 m

mh

≤ 0,

1 t,

but m

ax. 0

,5 m

mh

≤ 0,

05 t,

bu

t max

. 0,5

mm

3

SS-EN ISO 13919-1:2019 (E)


svensk standard ss-en iso 13919-1:2019

Documents