EN ISO 1461:2009

SLOVENSKI STANDARD
01-julij-2009
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SIST EN ISO 1461:1999
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Hot dip galvanized coatings on fabricated iron and steel articles - Specifications and test
methods (ISO 1461:2009)
Durch Feuerverzinken auf Stahl aufgebrachte Zinküberzüge (Stückverzinken) -
Anforderungen und Prüfungen (ISO 1461:2009)
Revêtements par galvanisation à chaud sur produits finis en fonte et en acier -
Spécifications et méthodes d'essaii (ISO 1461:2009)
Ta slovenski standard je istoveten z: EN ISO 1461:2009
ICS:
25.220.40 Kovinske prevleke Metallic coatings
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 1461
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2009
ICS 25.220.40 Supersedes EN ISO 1461:1999
English Version
Hot dip galvanized coatings on fabricated iron and steel articles
- Specifications and test methods (ISO 1461:2009)
Revêtements par galvanisation à chaud sur produits finis Durch Feuerverzinken auf Stahl aufgebrachte Zinküberzüge
en fonte et en acier - Spécifications et méthodes d'essaii (Stückverzinken) - Anforderungen und Prüfungen (ISO
(ISO 1461:2009) 1461:2009)
This European Standard was approved by CEN on 30 April 2009.
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 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 1461:2009: E
worldwide for CEN national Members.

Contents Page
Foreword .3

Foreword
This document (EN ISO 1461:2009) has been prepared by Technical Committee ISO/TC 107 "Metallic and
other inorganic coatings" in collaboration with Technical Committee CEN/TC 262 “Metallic and other inorganic
coatings”, 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 November 2009, and conflicting national standards shall be withdrawn
at the latest by November 2009.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 1461:1999.
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, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 1461:2009 has been approved by CEN as a EN ISO 1461:2009 without any modification.

INTERNATIONAL ISO
STANDARD 1461
Third edition
2009-05-15
Hot dip galvanized coatings on fabricated
iron and steel articles — Specifications
and test methods
Revêtements par galvanisation à chaud sur produits finis en fonte et en
acier — Spécifications et méthodes d'essai

Reference number
ISO 1461:2009(E)
©
ISO 2009
ISO 1461:2009(E)
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ii © ISO 2009 – All rights reserved

ISO 1461:2009(E)
Contents Page
Foreword. iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 2
4 General requirements. 3
4.1 General. 3
4.2 Hot dip galvanizing bath . 3
4.3 Information to be supplied by the purchaser . 3
4.4 Safety . 4
5 Acceptance inspection and sampling . 4
6 Coating properties. 4
6.1 Appearance . 4
6.2 Thickness . 5
6.3 Renovation . 8
6.4 Adhesion. 8
6.5 Acceptance criteria. 8
7 Certificate of compliance . 9
Annex A (normative) Information to be supplied. 10
Annex B (normative) Safety and process requirements. 12
Annex C (informative) Renovation of uncoated or damaged areas . 13
Annex D (informative) Determination of thickness. 14
Annex E (informative) Corrosion resistance of hot dip galvanized coatings . 15
Bibliography . 16

ISO 1461:2009(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 1461 was prepared by Technical Committee ISO/TC 107, Metallic and other inorganic coatings,
Subcommittee SC 4, Hot dip coatings (galvanized, etc.).
This third edition cancels and replaces the second edition (ISO 1461:1999), which has been technically
revised. This revision reflects the experience gained in the use of ISO 1461 and includes a simplification of
procedures and presentation.
Significant changes to the text include the following:
⎯ further refining of the scope of application of the standard to exclude woven or welded mesh products that
are continuously galvanized;
⎯ adding a definition for weld seepage in Clause 3;
⎯ adding references to the availability of secondary zinc supply;
⎯ adding explanatory notes on coating finish;
⎯ simplifying requirements for sampling and testing;
⎯ adding references for the use of alternative renovation materials and for methods of adhesion testing;
⎯ moving much informative information on the influence of the basis metal on the hot dip galvanized
[8]
coatings produced and designed for galvanizing into the guidance document ISO 14713-2 .

iv © ISO 2009 – All rights reserved

INTERNATIONAL STANDARD ISO 1461:2009(E)

Hot dip galvanized coatings on fabricated iron and steel
articles — Specifications and test methods
1 Scope
This International Standard specifies the general properties of coatings and test methods for coatings applied
by dipping fabricated iron and steel articles (including certain castings) in a zinc melt (containing not more
than 2 % of other metals). It does not apply to the following:
a) sheet, wire and woven or welded mesh products that are continuously hot dip galvanized;
b) tube and pipe that are hot dip galvanized in automatic plants;
c) hot dip galvanized products (e.g. fasteners) for which specific standards exist and which might include
additional requirements or requirements which are different from those of this International Standard.
NOTE Individual product standards can incorporate this International Standard for the coating by quoting its number,
or can incorporate it with modifications specific to the product. Different requirements can also be made for galvanized
coatings on products intended to meet specific regulatory requirements.
After-treatment/over-coating of hot dip galvanized articles is not covered by this International Standard.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 752, Zinc ingots
ISO 1460, Metallic coatings — Hot dip galvanized coatings on ferrous materials — Gravimetric determination
of the mass per unit area
ISO 2064, Metallic and other inorganic coatings — Definitions and conventions concerning the measurement
of thickness
ISO 2178, Non-magnetic coatings on magnetic substrates — Measurement of coating thickness — Magnetic
method
ISO 2808, Paints and varnishes — Determination of film thickness
ISO 2859-1, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by
acceptance quality limit (AQL) for lot-by-lot inspection
ISO 2859-2, Sampling procedures for inspection by attributes — Part 2: Sampling plans indexed by limited
quality (LQ) for isolated lot inspection
ISO 2859-3, Sampling procedures for inspection by attributes — Part 3: Skip-lot sampling procedures
ISO 1461:2009(E)
ISO 3549, Zinc dust pigments for paints — Specifications and test methods
ISO 3882, Metallic and other inorganic coatings — Review of methods of measurement of thickness
ISO 10474, Steel and steel products — Inspection documents
EN 1179, Zinc and zinc alloys — Primary zinc
EN 13283, Zinc and zinc alloys — Secondary zinc
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 2064 and the following apply.
3.1
hot dip galvanizing
formation of a coating of zinc and/or zinc iron alloys on iron and steel products by dipping prepared steel or
cast iron in a zinc melt
3.2
hot dip galvanized coating
coating obtained by hot dip galvanizing
NOTE The term “hot dip galvanized coating” is subsequently referred to as the “coating”.
3.3
coating mass
total mass of zinc and/or zinc alloys per area of surface
NOTE The coating mass is expressed in grams per square metre, g/m .
3.4
coating thickness
total thickness of zinc and/or zinc alloys
NOTE The thickness is expressed in micrometres, µm.
3.5
significant surface
part of the article covered or to be covered by the coating and for which the coating is essential for
serviceability and/or appearance
3.6
control sample
article or group of articles from a lot that is selected for sampling
3.7
reference area
area within which a specific number of single measurements are made
3.8
local coating thickness
mean value of coating thickness obtained from the specific number of measurements within a reference area
for a magnetic test or the single value from a gravimetric test
3.9
mean coating thickness
average value of the local thicknesses
2 © ISO 2009 – All rights reserved

ISO 1461:2009(E)
3.10
local coating mass
value of coating mass obtained from a single gravimetric test
3.11
mean coating mass
average value of the coating masses determined either by using a control sample selected in accordance with
Clause 5 using tests in accordance with ISO 1460 or by conversion of the mean coating thickness (3.9)
3.12
minimum value of the coating thickness
lowest single measurement in a gravimetric test or lowest mean obtained from the specified number of
measurements in a magnetic test within a reference area
3.13
inspection lot
single order or single delivery load
3.14
acceptance inspection
inspection of an inspection lot at the hot dip galvanization works, unless otherwise specified
3.15
uncoated area
areas on the iron or steel articles that do not react with the molten zinc
3.16
zinc melt
molten mass containing primarily zinc
3.17
weld seepage
emission of previously retained pretreatment solutions from narrow spaces between two closely contacting
surfaces that have been subject to intermittent welding or from very small cavities (pinholes) in the welds of a
galvanized article
4 General requirements
4.1 General
This International Standard sets out requirements for the contents of the zinc melt used to apply a galvanized
coating to articles (see 4.2). The chemical composition and the surface condition (finish and roughness) of the
basis metal, the mass of the parts and the galvanizing conditions may affect the appearance, thickness,
texture and physical/mechanical properties of the coating. This International Standard does not define any
[8]
requirements regarding these points. Guidance on these parameters can be found in ISO 14713-2 .
4.2 Hot dip galvanizing bath
The hot dip galvanizing bath shall primarily contain molten zinc. The total of the other elements (as identified
in ISO 752, EN 1179 or EN 13283, excluding tin and iron) in the molten zinc shall not exceed 1,5 % by mass.
4.3 Information to be supplied by the purchaser
The information listed in Annex A (Clauses A.1 and A.2) shall be supplied by the purchaser.
ISO 1461:2009(E)
4.4 Safety
Venting and draining shall be provided for in accordance with Annex B.
5 Acceptance inspection and sampling
Acceptance inspection can be undertaken by, or on behalf of, the purchaser and shall be undertaken before
the products leave the hot dip galvanizers custody, unless otherwise specified at the time of ordering by the
purchaser. Acceptance inspection involves assessment of the appearance of the coated product and testing
of the zinc coating thickness. Adhesion tests are normally not carried out and are only tested by agreement.
If the customer requires this, a control sample for thickness testing shall be taken randomly from each
inspection lot (3.13) selected for testing. The minimum number of articles from each inspection lot that forms
the control sample shall be in accordance with Table 1.
Table 1 — Control sample size related to lot size
Minimum number of articles
Number of articles in lot
in the control sample
1 to 3 All
4 to 500 3
501 to 1 200 5
1 201 to 3 200 8
3 201 to 10 000 13
> 10 000 20
6 Coating properties
6.1 Appearance
At acceptance inspection, the significant surface(s) of all the hot dip galvanized article(s), when first examined
by normal or corrected vision from a distance of not less than 1 m, shall be free from nodules, blisters
(i.e. raised areas without solid metal beneath), roughness and sharp points (if either can cause injury) and
uncoated areas.
The primary purpose of the galvanized coating is to protect the underlying iron or steelwork against corrosion.
Considerations related to aesthetics or decorative features should be secondary. Where these secondary
features are also of importance, it is highly recommended that the galvanizer and customer agree upon the
standard of finish that is achievable on the iron or steelwork (in total or in part), given the range of materials
used to form the article. This is of particular importance where the required standard of finish is beyond that
set out in this subclause. It should be noted that “roughness” and “smoothness” are relative terms and the
roughness of coatings on articles galvanized after fabrication differs from that of mechanically wiped products,
such as galvanized sheet, tube and wire. In practice, it is not possible to establish a definition of appearance
and finish covering all requirements.
The occurrence of darker or lighter areas (e.g. cellular pattern or dark grey areas) or some surface
unevenness shall not be a cause for rejection. The development of wet storage staining, primarily basic zinc
oxide (formed during storage in humid conditions after hot dip galvanizing), shall not be a cause for rejection,
providing the coating thickness remains above the specified minimum value.
4 © ISO 2009 – All rights reserved

ISO 1461:2009(E)
NOTE In certain circumstances, for example, where the galvanized article is to receive a further treatment or
application of additional coatings, the purchaser might ask the galvanizer
a) not to quench the article, and/or
b) to take measures to prevent the formation of corrosion products on the surface of the galvanized coating during
storage and transport.
Flux residues shall not be permitted. Lumps and zinc ash shall not be permitted where they might affect the
[7]
intended use of the hot dip galvanized article or its corrosion resistance requirement (see ISO 14713-1 for
corrosion protection performance data).
Aesthetic ef
...