EN 1677-5:2001
(Main)Components for slings - Safety - Part 5: Forged steel lifting hooks with latch - Grade 4
Components for slings - Safety - Part 5: Forged steel lifting hooks with latch - Grade 4
This Part of EN 1677 specifies requirements for forged steel lifting hooks of grade 4 having latch and eye up to 31,5 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 hooks. The hazards covered by this part of EN 1677 are identified in clause 4.
Einzelteile für Anschlagmittel - Sicherheit - Teil 5: Geschmiedete Haken mit Sicherungsklappe - Güteklasse 4
1 Anwendungsbereich
Dieser Teil von EN 1677 legt Anforderungen für geschmiedete Ösenhaken der Güteklasse 4 im Bereich bis 31,5 t Tragfähigkeit fest, die hauptsächlich Verwendung finden in:
¾ Anschlagketten nach EN 818-5,
¾ Anschlagseilen aus Stahldrahtseilen nach prEN 13414-1:1998 und
¾ textilen Anschlagmitteln nach EN 1492-1 und EN 1492-2,
die zum Heben von Gegenständen, Materialien und Gütern vorgesehen sind.
Dieser Teil von EN 1677 gilt nicht für handgeschmiedete Haken.
Die Gefährdungen, die durch diesen Teil von EN 1677 abgedeckt werden, sind in Abschnitt 4 aufgeführt.
Anhang A enthält Grundlagen für die Berechnung der Hakenmaße.
Anhang B enthält ein Beispiel eines Bezeichnungssystems für Haken der Güteklasse 4.
Accessoires pour élingues - Sécurité - Partie 5: Crochets de levage en acier forgé à linguet - Classe 4
1 Domaine d'application
La présente partie de l'EN 1677 spécifie les prescriptions requises pour les crochets en acier forgé de classe 4 avec linguet et ¿il, de charge maximale d'utilisation inférieure ou égale à 31,5 tonnes principalement utilisés avec :
¾ des élingues en chaînes selon l'EN 818-5 ;
¾ des élingues en câbles d'acier selon le prEN 13414-1:1998;
¾ des élingues textiles selon l'EN 1492-1 et l'EN 1492-2.
prévues pour le levage d'objets, de matériels ou de marchandises.
La présente Norme européenne ne s'applique pas aux crochets forgés à la main.
Les risques couverts par la présente partie de l'EN 1677 sont identifiés dans l'article 4.
L'annexe A indique les méthodes de calcul des dimensions des crochets.
L'annexe B donne un exemple de système de désignation des crochets de classe 4.
Sestavni deli obes - Varnost - 5. del: Kovani kavlji z varovalom - Kakovostni razred 4
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 1677-5:2001
01-december-2001
Sestavni deli obes - Varnost - 5. del: Kovani kavlji z varovalom - Kakovostni razred
4
Components for slings - Safety - Part 5: Forged steel lifting hooks with latch - Grade 4
Einzelteile für Anschlagmittel - Sicherheit - Teil 5: Geschmiedete Haken mit
Sicherungsklappe - Güteklasse 4
Accessoires pour élingues - Sécurité - Partie 5: Crochets de levage en acier forgé a
linguet - Classe 4
Ta slovenski standard je istoveten z: EN 1677-5:2001
ICS:
53.020.30 Pribor za dvigalno opremo Accessories for lifting
equipment
SIST EN 1677-5:2001 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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EUROPEAN STANDARD
EN 1677-5
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2001
ICS 53.020.30
English version
Components for slings - Safety - Part 5: Forged steel lifting
hooks with latch - Grade 4
Accessoires pour élingues - Sécurité - Partie 5: Crochets Einzelteile für Anschlagmittel - Sicherheit - Teil 5:
de levage en acier forgé à linguet - Classe 4 Geschmiedete Haken mit Sicherungsklappe - 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 1677-5:2001 E
worldwide for CEN national Members.
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EN 1677-5:2001
Contents
Page
Foreword 3
Introduction 4
1 Scope 4
2 Normative references 5
3 Terms and definitions 6
4 Hazards 6
5 Safety requirements 7
6 Verification of safety requirements 12
7 Marking 14
8 Manufacturer’s certificate 15
9 Instructions for use 15
Annex A (informative) Bases for the calculation of hook dimensions 16
Annex B (informative) Designation system for hooks - Grade 4 17
Annex ZA (informative) Relationship of this document with EC Directives 18
Bibliography 19
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EN 1677-5:2001
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 Directives, 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 6: Links - Grade 4
Annexes A and B of this European Standard are informative.
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 1677-5:2001
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 hooks 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 hook 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 forged steel lifting hooks of grade 4 having latch and eye
up to 31,5 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.
This Part of EN 1677 does not apply to hand forged hooks.
The hazards covered by this Part of EN 1677 are identified in clause 4.
Annex A gives the bases for calculation of hook dimensions.
Annex B gives an example of a designation system for hooks of grade 4.
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EN 1677-5:2001
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
A.1 :1995 Part 2 : Technical principles and specifications
(Amendment A.1 : 1995)
EN 818-5 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 testing
Part 2: Verification of the force measuring system of the tensile testing machines
EN 10025:1990 Hot rolled products of non-alloy structural steels - Technical delivery
+A1:1993 conditions
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 quallity 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
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EN 1677-5:2001
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 hook is authorized to sustain in general lifting service, expressed as a code
NOTE This term has the same meaning as the term maximum working load used in annex A of
EN 292-2: 1991/A1: 1995.
3.2
manufacturing proof force (MPF)
force applied to the hook during the manufacturing proof test
3.3
breaking force (BF)
maximum force reached during the static tensile test of the hook, at which the hook fails to retain the
load
3.4
traceability code
series of letters and/or numbers marked on a hook that enables its manufacturing history, including the
identity of the cast of steel used, to be traced
3.5
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.
3.6
lot
specified number of hooks 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
4 Hazards
Accidental release of a load or, release of a load due to failure of a hook 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 hooks, 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 hooks 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 hook, this Part of
EN 1677 also gives requirements for marking and the manufacturer’s certificate.
Errors of 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.
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EN 1677-5:2001
Table 1 contains those hazards, that require action to reduce risk identified by risk assessment as being
specific and significant for forged steel hooks of grade 4.
Table 1 - Hazards and associated requirements
Hazards identified in annex Relevant clause of annex A of Relevant clause/subclause of
A of EN 1050: 1996 EN 292-2 : 1991/A.1 : 1995 this Part of EN 1677
1.e Mechanical 1.3.2 5
hazard due to 4.1.2.3 5
inadequacy of 4.1.2.5 5
strength 4.2.4 5
1.7.3 7
1.3 Cutting hazard 1.3.4 5.4
1.8 Friction or abrasion 1.3.4 5.4
hazard
15 Errors of fitting 1.5.4 5.2
hazard
17 Falling objects 1.3.3 5.6
hazard
5 Safety requirements
5.1 Design
The form of the upper end shall be of the eye type as indicated in Figure 1.
The dimensions shall be such as to ensure articulation so that the force imposed is transmitted in the
intended direction.
NOTE The form of the hook is not specified in detail. For example, a minimum value of dimension F (see
Figure 1) as measured in any direction is specified so that the eye of the hook can accommodate a pin,
but the eye of the hook need not be circular.
Each hook shall have a spring loaded latch conforming to 5.6. to ensure that the load cannot become
accidentally unhooked.
5.2 Dimensions
The principal dimensions of the hooks shall conform to Table 2, in which the hook dimensions are related
to the working load limit.
NOTE For direct use in wire rope slings and/or textile slings, dimension F should be larger than the
minimum value given in Table 2
In addition, the following requirements shall be met:
a) the ac tual point height B shall be equal to or greater than the full throat opening, O,
(see Figure 1);
b) the f ull throat opening O shall not exceed 95% of the actual seat diameter D;
c) the hook latch shall be capable of closing over the maximum diameter of bar A, as indicated in
Figure 1, that can be admitted through the actual throat opening O .
1
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EN 1677-5:2001
Key
1 Maximum diameter of bar
Figure 1 - Dimensions of hook
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EN 1677-5:2001
Table 2 - Dimensions of hooks (see Figure 1)
Code Working load limit D O O FH L
1
number
(WLL) min. min. min. min. max. max.
t mmmm mmmm mm mm
6 0,56 2217 1612 25 17
7 0,75 2620 1814 29 20
8 1 30 23 21 16 35 23
9 1,25 3426 2418 38 26
10 1,6 38 29 27 20 43 29
11 2 4232 3023 48 32
13 2,65 49 37 35 26 55 37
14 3 5240 3728 59 40
16 4 6046 4332 68 46
18 5 6751 4836 76 51
19 5,6 71 54 51 38 80 54
20 6,3 75 57 53 40 85 57
22 7,5 82 63 58 44 93 63
23 8 8565 6046 96 65
25 10 95 72 68 51 107 72
26 10,6 98 75 70 52 111 75
28 12,5 106 81 76 57 120 81
32 16 119 91 85 64 135 91
36 20 134 102 96 72 152 102
40 25 150 115 107 80 170 115
45 31,5 168 129 120 90 190 129
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 hooks, when suitably heat-treated conform 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.
5.3.1.4 Chemical composition
To ensure that hooks 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 3.
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EN 1677-5:2001
Table 3 - Sulfur and phosphorus content
Element Maximum mass content as determined by
Cast analysis Check analysis
%%
Sulfur 0,025 0,030
Phosphorus 0,025 0,030
The silicon content of the steel shall be as specified in Table 4.
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
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