SIST EN 1677-6:2001
(Main)Components for slings - Safety - Part 6: Links - Grade 4
Components for slings - Safety - Part 6: Links - Grade 4
This part of EN 1677 specifies requirements for welded steel master-links, intermediate master-links, master-links assemblies and lower terminal links of grade 4 up to 67 t WLL, mainly for use in: chain slings according to EN 818-5; steel wire rope slings; textile slings according to prEN 1492-1, prEN 1492-2; intended for lifting objects, materials or goods. This Part of EN 1677 does not apply to hand forged links. The hazards covered by this Part of EN 1677 are identified in clause 4.
Einzelteile für Anschlagmittel - Sicherheit - Teil 6: Einzelglieder - Güteklasse 4
1 Anwendungsbereich
Dieser Teil von EN 1677 legt Anforderungen für geschweißte Aufhänge-, Zwischen- und Endglieder und Aufhänge-garnituren aus Stahl in Güteklasse 4 im Bereich bis 67 t Tragfähigkeit fest, die hauptsächlich Verwendung finden in:
3 Anschlagketten nach EN 818-5,
3 Anschlagseilen aus Stahldrahtseilen nach prEN 13414-1:1998 und
3 textilen Anschlagmitteln nach EN 1492-1 und EN 1492-2,
die zum Heben von Gegenständen, Materialien und Gütern vorgesehen sind.
Die Gefährdungen, die durch diesen Teil von EN 1677 abgedeckt werden, sind in Abschnitt 4 aufgeführt.
Accessoires pour élingues - Sécurité - Partie 6: Mailles - Classe 4
1 Domaine d'application
La présente partie de l'EN 1677 spécifie les prescriptions requises pour les mailles de tete soudée, mailles de tete intermédiaire soudées, assemblages de mailles de tete soudées et extrémités inférieures soudées de classe 4 de charge maximale d'utilisation inférieure ou égale a 67 tonnes principalement utilisés avec :
3 des élingues en chaînes selon l'EN 818-5 ;
3 des élingues en câbles d'acier selon l'EN 13414-1:1998 ;
3 des élingues textiles selon l'EN 1492-1 et l'EN 1492-2.
prévues pour le levage d'objets, de matériels ou de marchandises.
Les phénomenes dangereux couverts par la présente partie de l'EN 1677 sont identifiés dans l'article 4.
Sestavni deli obes - Varnost - 6. del: Členi - Kakovostni razred 4
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 1677-6:2001
01-december-2001
6HVWDYQLGHOLREHV9DUQRVWGHO ýOHQL.DNRYRVWQLUD]UHG
Components for slings - Safety - Part 6: Links - Grade 4
Einzelteile für Anschlagmittel - Sicherheit - Teil 6: Einzelglieder - Güteklasse 4
Accessoires pour élingues - Sécurité - Partie 6: Mailles - Classe 4
Ta slovenski standard je istoveten z: EN 1677-6:2001
ICS:
53.020.30 Pribor za dvigalno opremo Accessories for lifting
equipment
SIST EN 1677-6:2001 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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EUROPEAN STANDARD
EN 1677-6
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2001
ICS 53.020.30
English version
Components for slings - Safety - Part 6: Links - Grade 4
Accessoires pour élingues - Sécurité - Partie 6: Mailles - Einzelteile für Anschlagmittel - Sicherheit - Teil 6:
Classe 4 Einzelglieder - Güteklasse 4
This European Standard was approved by CEN on 18 February 2001.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, 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
© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1677-6:2001 E
worldwide for CEN national Members.
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EN 1677-6:2001
Contents
Page
Foreword 3
Introduction 4
1 Scope 4
2 Normative references 4
3 Terms and definitions 5
4 Hazards 6
5 Safety requirements 7
6 Verification of safety requirements 10
7 Marking 14
8 Manufacturer’s certificate 14
9 Instructions for use 14
Annex ZA (informative) Relationship of this document with EC Directives 15
Bibliography 16
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EN 1677-6:2001
Foreword
This European Standard has been prepared by Technical Committee CEN/TC 168 “Chains, ropes,
webbing, slings and accessories - Safety”, the Secretariat of which is held by BSI.
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 October 2001, and conflicting national standards shall
be withdrawn at the latest by October 2001.
This European Standard has been prepared under a mandate given to CEN by the European
Commission and the European Free Trade Association, and supports essential requirements of EC
Directive(s).
For relationship with EC Directive(s), see informative Annex ZA, which is an integral part of this standard.
The other Parts of EN 1677 for components for slings are:
Part 1: Forged steel components - Grade 8
Part 2: Forged steel lifting hooks with latch - Grade 8
Part 3: Forged steel self-locking hooks - Grade 8
Part 4: Links - Grade 8
Part 5: Forged steel lifting hooks with latch - Grade 4
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Czech
Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg,
Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.
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EN 1677-6:2001
Introduction
This European Standard has been prepared to be a harmonized standard providing one means of
complying with the essential safety requirements of the Machinery Directive and associated EFTA
regulations.
The links covered by this Part of EN 1677 are normally supplied to be part of a sling, but they may also be
used for other applications. In such instances it is important that the link design is checked to ensure its
fitness for the intended use.
The extent to which hazards are covered is indicated in the scope . In addition, lifting equipment shall
conform as appropriate to EN 292 for hazards that are not covered by this standard.
1 Scope
This part of EN 1677 specifies requirements for welded steel master links, intermediate master links,
master link assemblies and lower terminal links of grade 4 up to 67 t WLL, mainly for use in:
– chain slings according to EN 818-5
– steel wire rope slings according to prEN 13414-1:1998
– textile slings according to EN 1492-1, EN 1492-2 .
intended for lifting objects, materials or goods.
The hazards covered by this Part of EN 1677 are identified in clause 4.
2 Normative references
This European Standard incorporates, by dated or undated reference, provisions from other publications.
These normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to, or revisions of, any of these publications
apply to this European Standard only when incorporated in it by amendment or revision. For undated
references the latest edition of the publication referred to applies (including amendments).
EN 292-1 Safety of machinery - Basic concepts - General principles for design
Part 1: Basic terminology, methodology
EN 292-2:1991 Safety of machinery - Basic concepts - General principles for design
/A1:1995 Part 2: Technical principles and specifications (Amendment 1: 1995)
EN 818-5:1999 Short link chain for lifting purposes – Safety - Part 5: Chain slings - Grade 4
EN 818-6 Short link chain for lifting purposes - Safety
Part 6: Chain slings - Specification for information for use and maintenance to be
provided by the manufacturer
EN 1050:1996 Safety of machinery - Principles for risk assessment
EN 1492-1 Textile slings – Safety - Part 1: Flat woven webbing slings made of man-made
fibres.
EN 1492-2 Textile slings – Safety - Part 2: Round slings made of man-made fibres
EN 10002-2:1991 Metallic materials - Tensile test - Part 2: Verification of the force measuring system
of the tensile testing machine
EN 10025:1990 Hot rolled products of non-alloy structural steels — Technical delivery conditions
+A1:1993
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EN 1677-6:2001
prEN 13414-1:1998 Steel wire ropes for slings – Safety - Part 1: Wire rope slings
EN 45012 General requirements for bodies operating assessment and certification/registration
of quality systems (ISO/IEC Guide 62:1996)
EN ISO 9002:1994 Quality systems - Model for quality assurance in production, installation and
servicing
ISO 643:1983 Steels - Micrographic determination of the ferritic or austenitic grain size
3 Terms and definitions
For the purposes of this Part of EN 1677, the following terms and definitions apply.
3.1
working load limit (WLL)
maximum mass that a link is authorized to sustain in general lifting service
NOTE This term has the same meaning as the term maximum working load used in the amendment
to EN 292-2:1991/A1: 1995.
3.2
manufacturing proof force (MPF)
force applied to the link during the manufacturing proof test
3.3
breaking force (BF)
maximum force reached during the static tensile test of the link at which the link fails to retain the load
3.4
sling
assembly consisting of chain, wire rope or textile joined to upper and lower terminals suitable for
attaching loads to the hook of a crane or other lifting machine
3.5
master link
link forming the upper terminal of a sling by means of which the sling is attached to the hook of a
crane or other lifting machine
3.6
intermediate master link
link used to connect one or two legs of a sling to a master link
3.7
master link assembly
assembly consisting of a master link together with two intermediate master links
3.8
lower terminal
link, hook or other device fitted at the end of a leg of a sling, remote from the master link or upper
terminal
3.9
traceability code
series of letters and/or numbers marked on a link that enable its manufacturing history, including the
identity of the cast of steel used, to be traced
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EN 1677-6:2001
3.10
lot
specified number of links from which samples are selected for testing purposes, and that have been
manufactured from the same cast of steel and subjected to the same heat treatment process
3.11
total ultimate elongation
total extension at the point of fracture of the link expressed as a percentage of the internal length of
the test sample
3.12
competent person
designated person, suitably trained, qualified by knowledge and practical experience, and with the
necessary instruction to enable the required test and examination to be carried out
NOTE 4.18 of EN ISO 9002:1994 gives guidance on training
4 Hazards
Accidental release of a load, or release of a load due to failure of a link puts at risk, either directly or
indirectly, the safety or health of those persons within the danger zone.
In order to provide the necessary strength and durability of links, this Part of EN 1677 gives requirements
for the design, manufacture and testing to ensure that specified levels of performance are met.
Fatigue failure has not been identified as a hazard when grade 4 links having the specified levels of
performance given in this standard are used for general lifting purposes.
Since failure can be caused by the incorrect choice of grade and specification of link, this standard also
gives requirements for marking and the manufacturer's certificate.
Errors in fitting can also lead to failure and this Part of EN 1677 contains dimensional requirements to
allow correct fit.
Risk of injury due to sharp edges, sharp angles or rough surfaces when handling is also covered by this
standard.
Those aspects of safe use associated with good practice are given in EN 818-6.
Table 1 contains those hazards, that require action to reduce risk identified by risk assessment as being
specific and significant for links of grade 4.
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EN 1677-6:2001
Table 1 - Hazards and associated requirements
Hazards identified in annex A of Relevant clause of annex A of Relevant clause/subclause of
EN 1050: 1996 EN 292-2: 1991/A1: 1995 this Part of EN1677
1e Mechanical hazard 1.3.2 5
due to inadequacy 4.1.2.3 5
of strength 4.1.2.5 5
4.2.4 5
1.7.3 7
1.7.4 9
1.3 Cutting hazard 1.3.4 5.4
1.8 Friction or abrasion 1.3.4 5.4
hazard
15 Errors of fitting hazard 1.5.4 5.2
9
5 Safety requirements
5.1 Design
Links shall be parallel-sided links produced by welding.
5.2 Dimensions
The internal dimensions of links covered by this Part of EN 1677 shall be such as to ensure effective
articulation so that the load is transmitted axially.
The cross-section of links shall be so as to conform to 5.5.
NOTE This requirement permits a varying shape and area of cross-section.
The internal length of master links shall be 58 WLL minimum (in millimetres) and the internal width
minimum (in millimetres) where the WLL is given in tonnes.
31,W5 LL
5.3 Materials and heat treatment
5.3.1 Quality of material
5.3.1.1 General
Within the limitations given in 5.3.1.2 to 5.3.1.4, the manufacturer shall select the type of steel to be used
so that the finished links, when suitably heat-treated conforms to the mechanical properties specified in
this Part of EN 1677.
5.3.1.2 Type of steel
The steel shall be produced by an electric process or by an oxygen blown process.
5.3.1.3 Deoxidation
The steel shall be fully killed as defined in EN 10025:1990+A1:1993 stabilized against strain age
embrittlement, and have an austenitic grain size of 5 or finer when tested in accordance with
ISO 643 : 1983
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EN 1677-6:2001
5.3.1.4 Chemical composition
To ensure that links are stabilized against strain age embrittlement during service, the steel shall contain
at least 0,025 % aluminium.
The steel shall contain no more sulfur and phosphorus than the limits given in Table 2.
Table 2 - Sulfur and phosphorus content
Element
Maximum mass content as determined by
Cast analysis Check analysis
%%
Sulfur 0,025 0,030
Phosphorous 0,025 0,030
The silicon content of the steel shall be as specified in Table 3.
NOTE The purpose of this requirement is to limit the detrimental effect on the hook as part of a chain
sling when used for lifting in galvanizing baths.
Table 3 - Silicon content
Element
Mass content as determined by
Cast analysis Check analysis
%%
Silicon 0,12 to 0,30 0,15 to 0,35
5.3.2 Heat treatment
Each link shall either be hardened from a temperature above the AC point and tempered, or normalized
3
from a temperature above the AC point, before being subjected to the manufacturing proof force. The
3
tempering temperature shall be a minimum of 475 °C.
The tempering conditions shall be at least as effective as a temperature of 475 °C maintained for a
period of 1 h.
NOTE
...
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