EN 2133:2020

SLOVENSKI STANDARD
01-februar-2021
Nadomešča:
SIST EN 2133:2011
Aeronavtika - Kadmiranje jekla z določeno natezno trdnostjo ≤ 1450 MPa z bakrom,
bakrovimi in nikljevimi zlitinami
Aerospace series - Cadmium plating of steels with specified tensile strength ≤ 1 450
MPa, copper, copper alloys and nickel alloys
Luft- und Raumfahrt - Kadmieren von Stählen mit einer Zugfestigkeit ≤ 1 450 MPa, von
Kupfer, von Kupferlegierung und von Nickellegierungen
Série aérospatiale - Cadmiage électrolytique des aciers de résistance ≤ 1 450 MPa, du
cuivre, des alliages de cuivre et des alliages de nickel
Ta slovenski standard je istoveten z: EN 2133:2020
ICS:
49.040 Prevleke in z njimi povezani Coatings and related
postopki, ki se uporabljajo v processes used in aerospace
letalski in vesoljski industriji industry
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 2133
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2020
EUROPÄISCHE NORM
ICS 49.040 Supersedes EN 2133:2010
English Version
Aerospace series - Cadmium plating of steels with
specified tensile strength ≤ 1 450 MPa, copper, copper
alloys and nickel alloys
Série aérospatiale - Cadmiage électrolytique des aciers Luft- und Raumfahrt - Kadmieren von Stählen mit einer
de résistance ≤ 1 450 MPa, du cuivre, des alliages de Zugfestigkeit ≤ 1 450 MPa, von Kupfer, von
cuivre et des alliages de nickel Kupferlegierung und von Nickellegierungen
This European Standard was approved by CEN on 4 October 2020.

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
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 2133:2020 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Purpose of process . 7
5 Limitations of process use . 7
6 Coating thickness . 7
7 Symbols . 7
8 Information for the processor . 8
9 Condition of parts prior to the treatment . 8
10 Process schedule . 8
11 Post treatment . 9
12 Removal of the plating . 10
13 Required characteristics . 10
14 Test methods . 11
15 Periodic tests . 13
16 Quality assurance . 13
17 Designation . 15
Annex A (normative) Process flow . 16
Annex B (informative) Standard evolution form . 17

European foreword
This document (EN 2133:2020) has been prepared by the Aerospace and Defence Industries
Association of Europe — Standardization (ASD-STAN).
After enquiries and votes carried out in accordance with the rules of this Association, this document has
received the approval of the National Associations and the Official Services of the member countries of
ASD, prior to its presentation to CEN.
This document shall be given the status of a national standard, either by publication of an identical text
or by endorsement, at the latest by month year of DOP, and conflicting national standards shall be
withdrawn at the latest by month year of DOW.
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, 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.
The main changes with respect to the previous edition are listed in the following table.
prEN/EN Publication
Edition Modifications
number date
prEN 2133 1 02/2010 -
1 – Scope:
2 09/2020
This document specifies the electrolytic cadmium plating of
parts and fasteners (addition of "and fasteners").

2 – Normative references:
EN 9100 is not a normative reference anymore.
EN 9100 has been added in bibliography.
The reason is that according to CEN/CENELEC Internal
regulations Part 3 (February 2017) (see 33 – Aspects of
conformity assessment) "no document containing
requirements for products, processes, services, persons,
systems and bodies shall make conformity dependent on a
quality management systems standard, i.e. it shall not, for
example, make normative reference to ISO 9001".

3.1 – batch:
Addition of "Note 1 to entry: For mechanical parts, hydrogen
embrittlement relieved at the same time".

4 – Purpose of process:
Introduction of three types:
- Type 1: as plated,
- Type 2: with hexavalent chromium based post-treatment,
- Type 3: without hexavalent chromium.

8 – Information for the processor:
"Requirements for finishing operations other than
chromating, e.g. phosphating" has been replaced by
"Requirements for finishing operations other than Type 2 or
Type 3 post-treatment, e.g. phosphating".

Table 1 – Stress relief heat treatment of steel parts:
Removal of the tolerance of ± 10 °C.
Addition of the note b.
For 1 100 MPa < UTS ≤ 1 450 MPa: the duration is 4 h min.
(instead of 1 h min.) and stress relief heat treatment is now
from 175 °C to 215 °C (instead of 190 °C to 230 °C).
For carburized parts, stress relief heat treatment is now
from 130 °C to 160 °C (instead of 130 °C to 150 °C).

10 – Process schedule:
Addition of a process flow chart (see Annex A).

10.2 – Masking:
Editorial change: masking (instead of covering).

10.4 – Nickel strike:
Nickel strike is mandatory on corrosion resisting steels and
is necessary on other type of steels.

10.5 – Cadmium plating:
If brighteners are used, absence of hydrogen embrittlement
shall be verified in accordance with ASTM F519.

11.1 – Hydrogen-embrittlement-relief heat treatment:
Editorial change: hydrogen-embrittlement-relief (instead of
de-embrittlement).
Table 2 – Hydrogen-embrittlement-relief of steel parts:
Removal of the tolerance of ± 10 °C.
Addition of the note b.
For 1 100 MPa < UTS ≤ 1 450 MPa: the hydrogen-
embrittlement–relief heat treatment is now from 175 °C to
215 °C (instead of 190 °C to 230 °C).
For carburized or nitrited parts, the hydrogen-
embrittlement –relief heat treatment is now from 130 °C to
160 °C (instead of 130 °C to 150 °C).

11.2 – Post-treatment:
The term "Post-treatment" is used instead of "chromating".
Introduction of Types 1, 2 and 3 within this subclause.

13.1 – Appearance:
New requirements depending on the type.

13.4 – Hydrogen embrittlement of steels:
Requirements are now detailed for parts and for fasteners.
13.5 – Corrosion resistance:
New requirements depending on the type.
14.1.2 – Adhesion:
Addition of other test description.
Requirements are now detailed for burnishing test and for
grid test.
14.1.4 – Hydrogen embrittlement:
Full revision of the requirements of this subclause.

14.1.5 – Corrosion resistance:
Requirements are now detailed for parts and for fasteners.

14.2.3 – Coating thickness:
Addition of requirements regarding the measurement of the
thickness in the hard-to-reach areas.

15 – Periodic tests:
Addition of this clause.
Table 3 – Minimum periodic tests requirements:
Addition of this table.
16.3 – Acceptance:
Unless otherwise specified, the appearance test shall be
performed on the whole batch.
16.5 – Periodic chemical analysis:
Addition of this subclause.
17 – Designation:
Addition of the Type in the designation.

Annex A (normative) – Process flow:
Addition of this annex.
***
Note from the writers of this revision of this document:
New requirements for sampling plan are currently under
investigation and may be changed in the next revision.

1 Scope
This document specifies the electrolytic cadmium plating of parts and fasteners in steel of tensile strength
UTS  1 450 MPa, copper, copper alloys and nickel alloys, whose temperature in service does not exceed
235 °C.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
EN 2828, Aerospace series — Adhesion test for metallic coatings by burnishing
EN 2831, Aerospace series — Hydrogen embrittlement of steels — Test by slow bending
EN 2832, Aerospace series — Hydrogen embrittlement of steels — Notched specimen test
EN ISO 1463:2004, Metallic and oxide coatings — Measurement of coating thickness — Microscopical
method (ISO 1463:2003)
EN ISO 2082:2017, Metallic and other inorganic coatings — Electroplated coatings of cadmium with
supplementary treatments on iron or steel (ISO 2082:2017)
EN ISO 2177:2004, Metallic coatings — Measurement of coating thickness — Coulometric method by
anodic dissolution (ISO 2177:2003)
EN ISO 2178:2016, Non-magnetic coatings on magnetic substrates — Measurement of coating
thickness — Magnetic method (ISO 2178:2016)
EN ISO 2409:2013, Paints and varnishes — Cross-cut test (ISO 2409:2013)
EN ISO 2819: 2018, Metallic coatings on metallic substrates — Electrodeposited and chemically deposited
coatings — Review of methods available for testing adhesion (ISO 2819:2017)
EN ISO 3497:2001, Metallic coatings — Measurement of coating thickness — X-ray spectrometric
methods (ISO 3497:2000)
EN ISO 9227:2017, Corrosion tests in artificial atmospheres — Salt spray tests (ISO 9227:2017)
ISO 2859-1: 1999, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed
by acceptance quality limit (AQL) for lot-by-lot inspection
ISO 4520: 1981, Chromate conversion coatings on electroplated zinc and cadmium coatings
1)
ASTM B117, Standard Practice for Operating Salt Spray (Fog) Apparatus
ASTM F519, Standard test method for mechanical hydrogen embrittlement — Evaluation of
1)
plating/coating process and service environment
2)
NASM 1312-5, Fastener Test Methods — Method 5 — Stress Durability
2)
NASM 1312-14, Fastener Test Methods — Method 14 — Stress Durability, Internally Threaded Fasteners

1)
Published by: ASTM National (US) American Society for Testing and Materials, http://www.
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