EN ISO 4519:2016

SLOVENSKI STANDARD
01-julij-2016
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SIST ISO 4519:1999
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Electrodeposited metallic coatings and related finishes - Sampling procedures for
inspection by attributes (ISO 4519:1980)
Elektrolytisch abgeschiedene metallische Überzüge und verwandter Finishs -
Stichprobenverfahren zur Qualitätskontrolle (ISO 4519:1980)
Dépôts électrolytiques et finitions apparentées - Méthodes d'échantillonnage pour le
contrôle par attributs (ISO 4519:1980)
Ta slovenski standard je istoveten z: EN ISO 4519:2016
ICS:
25.220.40 Kovinske prevleke Metallic coatings
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 4519
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2016
EUROPÄISCHE NORM
ICS 25.220.40
English Version
Electrodeposited metallic coatings and related finishes -
Sampling procedures for inspection by attributes
(ISO 4519:1980)
Dépôts électrolytiques et finitions apparentées - Elektrolytisch abgeschiedene metallische Überzüge
Méthodes d'échantillonnage pour le contrôle par und verwandter Finishs - Stichprobenverfahren zur
attributs (ISO 4519:1980) Qualitätskontrolle (ISO 4519:1980)
This European Standard was approved by CEN on 2 April 2016.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, 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: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4519:2016 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO 4519:1980 has been prepared by Technical Committee ISO/TC 107 “Metallic and other
inorganic coatings” of the International Organization for Standardization (ISO) and has been taken over
as EN ISO 4519:2016 by 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 October 2016, and conflicting national standards shall
be withdrawn at the latest by October 2016.
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.
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, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 4519:1980 has been approved by CEN as EN ISO 4519:2016 without any modification.

International Standard
INTERNATIONAL ORkANlZATlON FOR STANDARDIZATlON.ME)I(LZYHAPOflHAR OPrAHM3Al#lfl IlO CTAH~APTI43A~WWORGANlSATlON INTERNATIONALE DE NORMALISATION
Electrodeposited metallic coatings and related finishes -
Sampling procedures for inspection by attributes
D&p6 ts Alec troly tiques et finitions apparent&es - M&bodes d%chanti!lonnage pour le cont&e par attributs
First edition 1980-07-15
U DC 669.056 : 621357.7 : 620.113 Ref. No. IS0 4519-1980 (E)
electrodeposited coatings, electrodeposition, definitions, sampling,
Descriptors : metal coatings, sampling tables (plans), quality control,
inspection by attributes.
Price based on 10 pages
Foreword
IS0 (the International Organization for Standardization) is a worldwide federation of
national standards institutes (IS0 member bodies). The work of developing Inter-
national Standards is carried out through IS0 technical committees. Every member
body interested in a subject for which a technical committee has been set up 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.
Draft International Standards adopted by the technical committees are circulated to
the member bodies for approval before their acceptance as International Standards by
the IS0 Council.
International Standard IS0 4519 was developed by Technical Committee ISO/TC 107,
Meta//ic and other non-organic coatings, and was circulated to the member bodies in
March 1979.
It has been approved by the member bodies of the following countries :
Bulgaria Israel South Africa, Rep. of
Canada Italy Spain
Czechoslovakia Japan Sweden
France Korea, Rep, of Switzerland
Germany, F. R. Libyan Arab Jamahiriya Turkey
Hungary
Poland United Kingdom
India Romania USA
The member body of the following disapproval of the document on
country expressed
technical grounds
Netherlands
0 International Organization for Standardization, 1980
Printed in Switzerland
INTERNATIONAL STANDARD IS0 4519-1980 (E)
Electro ’deposited metallic coatings and related finishes -
Sampling procedures for inspection by attributes
1 Scope and field of application 3 Definitions
This International Standard establishes sampling plans and
NOTE - Some of these definitions are not identical with those in
IS0 3534 but have been modified to make them easier to understand
procedures for inspection by attributes of electrodeposited
by non-statisticians and to make them more readily applicable to elec-
metallic coatings. It may be applied to related finishes by
troplated thems.
agreement between the supplier and the purchaser. It is based
on IS0 2859 (see also Addendum 1 to IS0 2859).
3.1 inspection : The process of measuring, examining,
The sampling plans in this International Standard are testing, or otherwise comparing the unit of product (see 3.4)
applicable, but not limited, to the inspection of end items, with the requirements.
components, materials in process and finished products in
storage. The plans are intended primarily to be used for a
3.2 attribute : A characteristic or property which is
continuing series of lots, but they may also be used for the
appraised in terms of whether it does or does not exist (for
inspection of isolated lots. However, the assurance given for
example go or no-go) with respect to a given requirement.
isolated lots is lower than that given for a continuing series of
lots.
33 inspection by attribute(s) : Inspection whereby either
the unit of product is simply classified as defective or non-
This International Standard is not applicable to the sampling
defective, or the number of defects in the unit of product is
and testing of mechanical fasteners having electrodeposited
counted, with respect to one or more given requirements.
metallic coatings or related finishes, in all the circumstances for
which procedures for these components are specified in
IS0 3269.
34 . unit of product : The object inspected either to deter-
mine its classification as defective or non-defective, or to count
The sampling plans given in this International Standard are
the number of defects. It may be a single article, a pair, a set, a
based on AQLsl) of 1,5 and 4,0 %. Other AQLs may be used if
length, an area, an operation, a volume, a component of an
specified in the product specification, in which case reference
end item or the end product itself. The unit of product may or
should be made to IS0 2859 and its Addendum 1.
may not be the same as the unit of purchase, supply, produc-
tion, or shipment.
It is also possible to formulate sampling plans based on
inspection by variables.
3.5 acceptance number : The maximum number of defects
or defective units in the sample that will permit acceptance of
the inspection lot.
2 References
3.6 rejection number : The minimum number of defects or
defective units in the sample that will cause rejection of the in-
I S 0 2859, Sampling procedures and tables for inspection by at-
spection lot.
tributes.
. inspection lot : A collection of coated articles that-are
IS0 2859lAdd. 1, Genera/information on sampling inspection, 37
and guide to the c/se of the /SO 28s tables. of the same kind, that’ have been produced to the same
specifications, that have been coated by a single supplier at one
IS0 3269, Fasteners - Acceptance inspection. 2) time, or at approximately the same time, under essentially iden-
tical conditions and that are submitted for acceptance or rejec-
- Vocabulary and symbols. tion as a group.
IS0 3534, Statistics
1) AQL = Acceptable Quality Level.
2) At present at the stage of draft.
IS0 45194980 (E)
3.8 Classification of defects and defectives
defective units of product divided by the total number of units
of product inspected, i.e.
3.8.1 method of classifying defects : The enumeration of
number of units inspected
possible defects of the unit of product classified according to
Percent defective = x 100
number of defectives
their seriousness. A defect is any non-conformance of the unit
of product to the specified requirements.
Defects are normally grouped into one or more of the following 4 Product submission
classes; however, defects may be grouped into other classes or
into sub-classes within these classes. 4.1 Lot
An inspection lot shall be a collection of items from which a
3.8.1.1 critical defect : A defect that judgement and ex-
sample shall be randomly drawn and inspected to determine
perience indicate is likely to result in hazardous or unsafe con-
conformance with the acceptance criteria. It may differ from a
ditions for the individual using, maintaining, or depending upon
collection of units of product designated as a lot for other pur-
the unit of product which has an electrodeposited metallic
poses, such as production, shipment, and storage.
coating or related finish. It may also be a defect in the coating
that judgement and experience indicate is likely to prevent per-
formance of the primary function of a major end item. 4.2 Formation of lots
The product shall be assembled into identifiable lots, sub-lots,
3.8.1.2 major defect : A defect, other than critical, that is
or in such manner as may be prescribed (see 6.3). Each lot
likely to result in failure of the finish, or to reduce materially the
shall, as far as practicable, consist of units of product or
usability of the unit of product for its intended purpose.
separate specimens of the same basic material composition, of
a single type, grade or class of the coating or finish, and ap-
3.8.1.3 minor defect : A defect that is not likely to reduce
proximately the same size and shape, processed under essen-
materially the usability of the unit of product for its intended
tially the same conditions, and at essentially the same time (see
purpose, or is a departure from established standards having
7.2.2).
little or no bearing on the effective use or operation of the item
which has an electrodeposited coating or related finish.
4.3 Lot size
NOTE - Inspection for detection of critical defects may require non-
The lot size is the number of units of product in a lot.
destructive examination of every unit of product in the lot. In this Inter-
national Standard, all defects not conforming to the specified re-
quirements in the product item specifications for electrodeposited
4.4 Presentation of lots
coatings and related finishes are considered to be major. If specified by
the purchaser, the maximum number of defects per hundred items, or
Unless specified by the purchaser in the contract or order, the
the maximum percent defective laid down in this International Stan-
formation of lots, the lot size and the manner in which the lot is
dard can be increased for the purpose of sampling inspection of minor
to be presented and identified shall be designated by the sup-
defects.
plier.
3.8.2 method of classifying defectives : A defective is a
unit of product which contains one or more defects. 5 Acceptance and rejection
Defectives are usually classified as follows : 5.1 Responsibility for tests
Unless otherwise specified in the contract or purchase order,
3.8.2.1 critical defective : A defective which contains one
the supplier shall be responsible for performing all the required
or more critical defects, and which may contain major or minor
tests for compliance with the specified inspection re-
defects.
quirements, and the supplier may use his own or any other
laboratory facilities suitable for performance of the inspection
3.8.2.2 major defective : A defective which contains one or
requirements. The purchaser shall have the right to perform
more major defects, and which may contain minor defects but
any of the inspections detailed in the material document, when
no critical defects.
such action is deemed necessary to ensure that the elec-
trodeposited metallic coating or the related finish conforms to
the prescribed requirements. Reports of the test results shall be
3.8.2.3 minor defective : A defective which contains one or
available for examination by the purchaser for 1 year from the
more minor defects, but no critical or major defects.
date of acceptance of the material by him. Copies of the test
reports and test details shall be furnished when required by the
contract or purchase order.
3.9 expression of non-conformance : The extent of non-
conformance of a product expressed either in terms of percent
defective, or in terms of defects per hundred items.
5.2 Acceptability of lots
determi ned by the use of a sampl-
Acceptabi lity of a lot shall be
3.10 percent defective : One hundred times the number of
ing plan.
IS0 45194980 (El
5.3 Defective items 6.4 Time of sampling
The purchaser shall have the right to reject any unit of product Samples may be drawn after all the units comprising the lot
found defective during inspection, whether that unit of product have been assembled, or during assembly of the lot.
,
forms part of a sample or not, and whether the lot as a whole is
accepted or rejected. With the approval of, and in the manner
specified by the purchaser, rejected items may be repaired or
corrected and resubmitted for inspection.
7 Sampling plans
The supplier may be required at the discretion of the responsi-
7.1 Sampling plan
ble authority to inspect every unit of the lot for critical defects.
The right is reserved to inspect every unit submitted by the sup-
A sampling plan shall indicate the number of units of product
plier for critical defects and to reject the lot immediately when a
from each lot which are to be inspected (sample size or series of
critical defect is found. The right is reserved also to sample, for
sample sizes) and the criteria for determining the acceptability
critical defects, every lot submitted by the supplier and to reject
of the lot (acceptance and rejection numbers). Unless other-
any lot if a sample drawn therefrom is found to contain one or
wise directed by the purchaser, the sampling plans shall be
more critical defects.
considered as normal inspection procedures and shall be used
from the start of inspection.
5.4 Resubmitted lots
Lots found unacceptable may be resubmitted for reinspection 7.2 Types of sampling plan
only after all items are re-examined or retested and all defec-
tives are removed or the defects corrected. The purchaser shall Three sampling plans for normal inspection are given in
tables 1, 2 and 3.
state whether reinspection shall include all types or classes of
defect, or only the particular type or class of defect which
caused initial rejection.
7.2.1 Sampling for visual and di mensional examinations
and for all non-dest ructive tests
Sampling for visual examination, dimensional tolerance exam-
6 Selection of samples (sampling)
ination, non-destructive thickness test, and all other non-
in accordance with
destructive procedures, shall be conducted
61 . Sample
table 1, unless the units of product were produced by barrel
electroplating, in which case, table 2 shall be used as the
A sample shall consist of one or more units of product selected
sampling plan. Unless a need can be demonstrated, separately
at random from a lot submitted for inspection without taking
prepared specimens shall not be used in lieu of production
into account their quality. The number of units of product in
items for non-destructive examinations and tests.
the sample is the sample size. Defective units shall be neither
deliberately included, nor excluded, from the random sample.
When selecting the samples, the supplier shall identify all units 7.2.2 Sampling for all destructive tests
which are observed to be defective, in order to dispose of or
rework them after completion of inspection. Sampling for each destructive test, such as hydrogen embrittle-
ment, adhesion, corrosion resistance, solderability, etc., shall
be conducted for each test in accordance with table 3. If the
6.2 Representative sampling
electroplated or coated articles are of such form,* shape, size or
value, as to prohibit the use thereof, or are not readily adap-
When appropriate, the number of units in the sample shall be
table to the test specified in the contract, purchase order or ap-
selected in proportion to the size of sub-lots, or parts of lots,
plicable standard, or if destructive tests of small lot sizes are re-
identified by some rational criterion. If representative sampling
quired, sampling for tests shall be permitted by use of separate
is used, the units from each part of the lot shall be selected at
specimens processed concurrently with the articles they repre-
random. See the annex for methods of drawing samples.
sent, as detailed in the purchase document or in 4.2. Unless a
need can be demonstrated, separately prepared specimens
6.3 Lot size
shall not be used in lieu of the production items for thickness
measurements.
The supplier and purchaser shall agree on a figure which is
mutually convenient and which takes into account the nature
of the production process. From the point of view of inspection 7.2.3 Alternative sampling plans
costs there is an advantage in large lots since the sample is a
smaller proportion of the lot and discrimination improves. If specified in the contract or purchase order, alternative sampl-
However, large lots should not be formed where to do so would ing plans may be substituted for those of tables 1, 2 and 3.
hold up the flow of production and smaller lots could have been There are a vast number of different types of sampling plan
sampled separately to maintain the flow. Also, small lots should
other than those detailed herein, and, in many instances, any
not be combined if there is doubt that they are of similar number of alternative sampling schemes may be used for a
quality. Lots should consist of units of product produced under specific situation involving electrodeposited metallic coatings
essentially the same conditions. and related finishes. The selection of a particular type of alter-
IS0 4519-1980 (E)
sampling plan is not an easy task, because selection
native 7.2.5 Isolated lots
should actually be based upon the following factors
The sampling plans in tables 1 to 5 are designed for continuing
a) properties of the sampling plan; series of lots produced over a period and the safeguard is pro-
vided by the switchi
...