prEN 10169

Continuously organic coated (coil coated) steel flat products - Technical delivery conditions

This document specifies requirements for continuously organic coated (coil coated) steel flat products. It particularly specifies the performance requirements.
The products covered are wide strip, sheet cut from wide strip, slit wide strip, strip rolled in widths less than 600 mm and cut lengths (from sheet or strip).
NOTE   National provisions can set up relationships between the performances of the coatings as required in this document and the outdoor atmospheres and ambiances required for a relevant building under study.
This document is not applicable to continuously organic coated flat products made of:
- tin mill products;
- electrical steels.

Kontinuierlich organisch beschichtete (bandbeschichtete) Flacherzeugnisse aus Stahl - Technische Lieferbedingungen

Dieses Dokument legt die Anforderungen an kontinuierlich organisch beschichtete (bandbeschichtete) Flacherzeugnisse aus Stahl fest, besonders im Hinblick auf die Gebrauchseigenschaften.
Bei den betroffenen Erzeugnissen handelt es sich um Breitband, aus Breitband geschnittenes Blech, längs geteiltes Breitband, gewalztes Band kleiner 600 mm Breite sowie (aus Band oder Blech) abgelängte Stäbe.
ANMERKUNG   Diese Europäische Norm gilt nicht für kontinuierlich beschichtete Flacherzeugnisse aus:
- Verpackungsblech;
- Elektroband und -blech.

Produits plats en acier revêtus en continu de matières organiques (prélaqués) - Conditions techniques de livraison

Le présent document spécifie les exigences relatives aux produits plats en acier revêtus en continu de matières organiques (prélaqués) et, en particulier, les exigences de performance.
Les produits concernés sont des larges bandes, des tôles découpées dans les larges bandes, des larges bandes refendues, des bandes laminées en largeurs inférieures à 600 mm et des feuilles et bandes coupées à longueur.
NOTE   Des réglementations nationales peuvent définir les relations entre les performances des revêtements telles qu’exigées dans le présent document et les atmosphères et ambiances extérieures requises pour un bâtiment étudié.
Le présent document n'est pas applicable aux produits plats revêtus en continu de matières organiques, fabriqués à l'aide de :
- produits étamés ;
- aciers pour applications électriques.

Z organskimi materiali kontinuirno prevlečeni ploščati jekleni izdelki v svitkih - Tehnični dobavni pogoji

General Information

• Status: Not Published
• ICS: 25.220.60 - Organic coatings
• ICS: 77.140.50 - Flat steel products and semi-products
• Technical Committee: ECISS/TC 109 - Coated and uncoated flat products to be used for cold forming
• Drafting Committee: ECISS/TC 109/WG 1 - Uncoated and coated flat products for cold forming and construction, except tin mill products
• Current Stage: 4599 - Dispatch of FV draft to CMC - Finalization for Vote
• Due Date: 09-Aug-2021
• Completion Date: 09-Aug-2021
• Ref Project: oSIST prEN 10169:2021 - Continuously organic coated (coil coated) steel flat products - Technical delivery conditions

RELATIONS

• Revised: EN 10169:2010+A1:2012 - Continuously organic coated (coil coated) steel flat products - Technical delivery conditions
• Effective Date: 19-Jul-2017

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN 10169:2021
01-maj-2021

Z organskimi materiali kontinuirno prevlečeni ploščati jekleni izdelki v svitkih -

Tehnični dobavni pogoji

Continuously organic coated (coil coated) steel flat products - Technical delivery

conditions

Kontinuierlich organisch beschichtete (bandbeschichtete) Flacherzeugnisse aus Stahl -

Technische Lieferbedingungen
Produits plats en acier revêtus en continu de matières organiques (prélaqués) -
Conditions techniques de livraison
Ta slovenski standard je istoveten z: prEN 10169
ICS:
25.220.60 Organske prevleke Organic coatings
77.140.50 Ploščati jekleni izdelki in Flat steel products and semi-
polizdelki products
oSIST prEN 10169:2021 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 10169:2021
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oSIST prEN 10169:2021
DRAFT
EUROPEAN STANDARD
prEN 10169
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2021
ICS 25.220.60; 77.140.50 Will supersede EN 10169:2010+A1:2012
English Version
Continuously organic coated (coil coated) steel flat
products - Technical delivery conditions

Produits plats en acier revêtus en continu de matières Kontinuierlich organisch beschichtete

organiques (prélaqués) - Conditions techniques de (bandbeschichtete) Flacherzeugnisse aus Stahl -

livraison Technische Lieferbedingungen

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

CEN/TC 459/SC 9.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are

aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without

notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 10169:2021 E

worldwide for CEN national Members.
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oSIST prEN 10169:2021
prEN 10169:2021 (E)
Contents Page

European foreword ............................................................................................................................................ 3

1 Scope .......................................................................................................................................................... 4

2 Normative references .......................................................................................................................... 4

3 Terms and definitions ......................................................................................................................... 6

4 Designation ........................................................................................................................................... 12

5 Information to be supplied by the purchaser ........................................................................... 14

5.1 Mandatory information .................................................................................................................... 14

5.2 Options .................................................................................................................................................... 15

6 Requirements ....................................................................................................................................... 15

6.1 General.................................................................................................................................................... 15

6.2 General coating properties.............................................................................................................. 17

6.3 Special coating properties ............................................................................................................... 20

6.4 Freedom of defects ............................................................................................................................. 24

7 Inspection .............................................................................................................................................. 24

7.1 Types of inspection and inspection documents ....................................................................... 24

7.2 Test units ............................................................................................................................................... 25

7.3 Type and number of tests ................................................................................................................ 25

7.4 Sampling ................................................................................................................................................. 25

7.5 Test methods ........................................................................................................................................ 25

7.6 Retests ..................................................................................................................................................... 29

8 Marking .................................................................................................................................................. 30

9 Packing and dispatch ......................................................................................................................... 30

10 Storage .................................................................................................................................................... 30

Annex A (informative) Types of ambience.............................................................................................. 31

Annex B (informative) Coating materials................................................................................................ 34

Annex C (informative) Outdoor exposure sites ..................................................................................... 36

Annex D (informative) Storage ................................................................................................................... 38

Bibliography ....................................................................................................................................................... 39

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oSIST prEN 10169:2021
prEN 10169:2021 (E)
European foreword

This document (prEN 10169:2021) has been prepared by Technical Committee CEN/TC 459/SC 9

“Coated and uncoated flat products to be used for cold forming”, the secretariat of which is held by

AFNOR.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 10169:2010+A1:2012.
This document is currently submitted to the CEN Enquiry.

In comparison with the previous edition, the following technical modifications have been made:

— addition of the requirement about a maximum six-month duration between production and

processing of the coil coated product;

— addition of the corrosion resistance category RC5+ corresponding to very high corrosivity

category C5 combining RC5-I and RC5-M that have been removed from this document;
— addition of the UV resistance category Ruv5;

— addition of third party supervision for natural weathering tests if a certificate is required by the

purchaser;

— definition of a four-year test duration for corrosion resistance category RC5+;

— definition of requirements for natural outdoor UV radiation resistance tests;
— removal of Geleen from the list of corrosivity natural outdoor exposure sites;
— editorial improvements and updating of normative references.
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oSIST prEN 10169:2021
prEN 10169:2021 (E)
1 Scope

This document specifies requirements for continuously organic coated (coil coated) steel flat products. It

particularly specifies the performance requirements.

The products covered are wide strip, sheet cut from wide strip, slit wide strip, strip rolled in widths less

than 600 mm and cut lengths (from sheet or strip).

NOTE National provisions can set up relationships between the performances of the coatings as required in

this document and the outdoor atmospheres and ambiances required for a relevant building under study.

This document is not applicable to continuously organic coated flat products made of:

— tin mill products;
— electrical steels.
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 10020, Definition and classification of grades of steel
EN 10021, General technical delivery conditions for steel products

EN 10025-1, Hot rolled products of structural steels - Part 1: General technical delivery conditions

EN 10025-2, Hot rolled products of structural steels - Part 2: Technical delivery conditions for non-alloy

structural steels
EN 10048, Hot rolled narrow steel strip - Tolerances on dimensions and shape

EN 10051, Continuously hot-rolled strip and plate/sheet cut from wide strip of non-alloy and alloy steels -

Tolerances on dimensions and shape
EN 10079, Definition of steel products

EN 10111, Continuously hot rolled low carbon steel sheet and strip for cold forming - Technical delivery

conditions

EN 10130, Cold rolled low carbon steel flat products for cold forming - Technical delivery conditions

EN 10131, Cold rolled uncoated and zinc or zinc-nickel electrolytically coated low carbon and high yield

strength steel flat products for cold forming - Tolerances on dimensions and shape

EN 10139, Cold rolled uncoated mild steel narrow strip for cold forming — Technical delivery conditions

EN 10140, Cold rolled narrow steel strip - Tolerances on dimensions and shape

EN 10143, Continuously hot-dip coated steel sheet and strip - Tolerances on dimensions and shape

EN 10152, Electrolytically zinc coated cold rolled steel flat products for cold forming - Technical delivery

conditions
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oSIST prEN 10169:2021
prEN 10169:2021 (E)
EN 10204, Metallic products - Types of inspection documents

EN 10268, Cold rolled steel flat products with high yield strength for cold forming — Technical delivery

conditions

EN 10338, Hot rolled and cold rolled non-coated products of multiphase steels for cold forming - Technical

delivery conditions

EN 10346, Continuously hot-dip coated steel flat products for cold forming - Technical delivery conditions

EN 13523-1, Coil coated metals - Test methods - Part 1: Film thickness
EN 13523-2, Coil coated metals - Test methods - Part 2: Gloss

EN 13523-3, Coil coated metals - Test methods - Part 3: Colour difference - Instrumental comparison

EN 13523-4, Coil coated metals - Test methods - Part 4: Pencil hardness

EN 13523-5, Coil coated metals - Test methods - Part 5: Resistance to rapid deformation (impact test)

EN 13523-6, Coil coated metals - Test methods - Part 6: Adhesion after indentation (cupping test)

EN 13523-7, Coil coated metals - Test methods - Part 7: Resistance to cracking on bending (T-bend test)

EN 13523-8, Coil coated metals - Test methods - Part 8: Resistance to salt spray (fog)

EN 13523-10, Coil coated metals - Test methods - Part 10: Resistance to fluorescent UV radiation and water

condensation

EN 13523-12, Coil coated metals - Test methods - Part 12: Resistance to scratching

EN 13523-19, Coil coated metals - Test methods - Part 19: Panel design and method of atmospheric exposure

testing

EN 13523-21, Coil coated metals - Test methods - Part 21: Evaluation of outdoor exposed panels

EN 13523-26, Coil coated metals - Test methods - Part 26: Resistance to condensation of water

EN ISO 2815, Paints and varnishes - Buchholz indentation test (ISO 2815)
EN ISO 4618, Paints and varnishes - Terms and definitions (ISO 4618)

EN ISO 4628-2, Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and

size of defects, and of intensity of uniform changes in appearance - Part 2: Assessment of degree of blistering

(ISO 4628-2)

EN ISO 4628-4, Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and

size of defects, and of intensity of uniform changes in appearance - Part 4: Assessment of degree of cracking

(ISO 4628-4)

EN ISO 4628-5, Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and

size of defects, and of intensity of uniform changes in appearance - Part 5: Assessment of degree of flaking

(ISO 4628-5)
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oSIST prEN 10169:2021
prEN 10169:2021 (E)
EN ISO 8044, Corrosion of metals and alloys - Vocabulary (ISO 8044)

EN ISO 12944-2, Paints and varnishes - Corrosion protection of steel structures by protective paint systems

- Part 2: Classification of environments (ISO 12944-2)
ISO 4997, Cold-reduced carbon steel sheet of structural quality
3 Terms and definitions

For the purpose of this document, the terms and definitions given in EN 10020, EN 10021, EN 10079,

EN 10204, EN ISO 4618, EN ISO 8044, EN ISO 12944-2 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
accessibility

ease of access to the steel components for the purpose of inspection and maintenance without any work

over and above that concerned with routine inspection
3.2
ambience
environmental conditions which prevail in the interior of the building

Note 1 to entry: These conditions determine the corrosivity category of the ambience and include different

parameters such as the air temperature, the relative humidity, the operating conditions in the building (e.g. use of

aggressive chemical products, refrigerated areas).

Note 2 to entry: The atmosphere surrounding the building can influence the ambience.

Note 3 to entry: Annex A gives an example of classification of types of ambience.

3.3
building interior application

application in buildings for which the concerned construction products (i.e. components of the building

fabric) are submitted to the influence of interior ambiences without significant exposure of any side of

the product to the influence of exterior atmospheres

Note 1 to entry: Building products include, for example: liner trays, ribbed profiles for roofing and cladding, curved

profiles, brake-pressed profiles, interior wall panels for partitions, ceiling panels, suspended frames (for suspended

ceilings), factory foamed (or mineral wool) sandwich panels for cold rooms or rooms with controlled ambience,

interior door frames, interior metal doors, interior metal windows and for ceilings.

Note 2 to entry: Some coil coated products can be used for interior applications having special performance

requirements, e.g. lighting. In such cases, these particular requirements should also be considered in consultation

with the manufacturer.

Note 3 to entry: For interior building elements, it is important to consider the risk of corrosive attack on the reverse

side of the element. This can be especially important in double-skin assemblies (e.g. built up insulated cladding)

where the reverse side of the interior element is not easily accessible for maintenance and/or in situations where

the interior element is expected to provide long-term durability.
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prEN 10169:2021 (E)

Note 4 to entry: Besides the requirements written in this document, there can be other international or national

requirements or regulations regarding fire, safety, food contact etc. that can be considered at the time of enquiry

and order.
3.4
building exterior application

application in buildings for which the concerned products are submitted to the influence of exterior

atmospheres

Note 1 to entry: Building products include, for example, ribbed profiles for roofing and cladding, curved profiles,

brake-pressed profiles, concealed fix roofing and cladding, standing seam roofing, corrugated sheeting, cladding

goods, sandwich panels for roofing and cladding, roof tiles, accessories (flashings, trims), rainwater goods (gutters,

down pipes), metal doors and garage doors.

Note 2 to entry: For exterior building elements, it is important to consider the risk of corrosive attack on internal,

i.e. reverse side surfaces. In particular, buildings with wet or chemically polluted internal environments can require

a reverse side organic coating selected to provide enhanced corrosion protection.

Note 3 to entry: This can be especially important in double-skin assemblies (e.g. built-up insulated cladding) where

the reverse side of the exterior element is not easily accessible for maintenance and/or in situations where the

exterior element is expected to provide long-term durability.

Note 4 to entry: Besides the requirements written in this document, other international or national requirements

regarding reaction to fire, safety etc. can be agreed on at the time of enquiry and order.

3.5
coating flexibility

ability of a coating to follow without damaging the deformation of the substrate to which it is applied

Note 1 to entry: The flexibility is determined during cold forming of the coated product by the T-bend test.

Note 2 to entry: Cold forming is the process where the main forming is done without heating the working piece.

3.6
coating material

material comprising organic polymers, i.e. synthetic resin or plastics, to which pigments, additives and

solvents (if required) have generally been added, suitable for coil coating

Note 1 to entry: These can be paints (in liquid or powder form) that when applied form an opaque film or plastic

film providing protective, decorative and/or specific properties.
3.7
coating systems
3.7.1
coating system

combination of the coatings applied on either the top side or the reverse side consisting of one or more

coats of one or more coating materials, the designation of which is derived from the relevant coating

material
3.7.2
multiple-coat system

system comprising a priming coat, possibly intermediate coat(s) and a top coat with particular

requirements on appearance, corrosion protection, formability, etc
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prEN 10169:2021 (E)
3.8
nominal organic coating thickness
thickness of the organic coating system either on top side or on reverse side
3.9
coil coated product

metal substrate including metallic coating and excluding thickness of organic coating system

3.10
coating types
3.10.1
backing coat

coating of any type on reverse side with no particular requirements on appearance, corrosion protection,

formability, etc
Note 1 to entry In the case of particular requirements, see 3.7.2.
3.10.2
film coating

plastic film applied to the substrate to which generally an adhesive and, if appropriate, a priming coat has

been applied beforehand
3.10.3
temporary film coating

strippable plastic film applied to the coated surface in order to afford a temporary protection against

mechanical damage (see also 6.1.2.3)
3.10.4
intermediate coat
coat between the priming coat and the top coat
3.10.5
priming coat
first coat of a multiple-coat system
Note 1 to entry In the case of particular requirements, see 3.7.2 and 3.7.3.
3.10.6
top coat
finishing coat
final (uppermost) coat of a multiple-coat system
3.11
coil coating

process in which an (organic) coating material is applied on rolled metal strip in a continuous process

which includes cleaning, if necessary, and chemical pre-treatment of the metal surface and either:

— one-side or two-side, single or multiple application of (liquid) paints or coating powders which are

subsequently cured or/and
— laminating with permanent plastic films

Note 1 to entry: Curing processes include those by convective or inductive heating or by radiation.

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Note 2 to entry: Laminating with metal strip resulting in a sandwich system is possible.

Note 3 to entry: A one-coat chemical pre-treatment and priming coat is possible.

3.12
colour

sensation resulting from the visual perception of radiation of a given composition (related to

EN 13523-22)

Note 1 to entry: A colour is uniquely characterized for a defined observer and a defined light source as well as

illuminating and viewing geometry by the coordinates of a point in a space (colorimetric specification with

tristimulous values).
3.13
colour difference

magnitude and character of the visually perceived, i.e. qualitative, difference between two colours under

daylight and artificial light respectively, or the magnitude and direction of the (instrumentally) measured

and calculated difference of two colours (related to EN 13523-3)
3.14
corrosion protection (interior) category
CPI

category of coating which presents a certain level of corrosion protection, the choice of which depends

on the corrosivity category, the period of protection and the accessibility
3.15
corrosion resistance (outdoor) category

category of product which presents a certain level of corrosion resistance, the choice of which depends

on the corrosivity category, the period of resistance and the accessibility

Note 1 to entry: Different categories of organic coil coated products for outdoor application classified following

their level of corrosion resistance are defined. Criteria of classification are related to their level of natural and

artificial outdoor corrosion resistance

Note 2 to entry: These conditions determine the corrosivity category and include both meteorological and

pollution parameters [EN ISO 12944-2]

Note 3 to entry: Environmental conditions can apply which are not typical of the region as a whole, e.g. in a rural

atmosphere close to a fossil fuel burning power generation plant, areas immediately downwind of the prevailing

wind direction can be subjected to an environment closer to urban or even industrial atmospheres. Such special

cases should be considered when organic coatings are chosen
3.16
corrosivity category

category which indicates the corrosivity of the environment taking into account both atmospheric

conditions prevailing around a constituent element of a structure, and micro-environmental effects and

shall be used for the selection of the appropriate product (related to EN ISO 12944-2)

Note 1 to entry: The relationship between corrosivity categories and types of atmospheres is given in Table 6.

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3.17
gloss

optical property of a surface, characterized by its ability to reflect light (related to EN 13523-2)

Note 1 to entry: For qualitative purposes, gloss ranges are often described by the terms “matt”, “low gloss” or

“semi-matt”, “satin”, “semi-gloss”, “gloss” and “high gloss”.
3.18
specular gloss

ratio of the luminous flux from an object in the specular direction for a specified source and receptor

angle to the luminous flux from polished black glass (related to EN 13523-2)
3.19
master coil
coil from which sheets, cut lengths or two or more smaller coils are produced
3.20
organic coating

dry paint film of the coated product or the plastic film of the film/metal laminate

3.21
period of protection

time between the first exposure of the steel component and the moment at which maintenance works

need to be carried out to restore corrosion protection

Note 1 to entry: The need to restore corrosion protection is deemed to arise when failure of the coating has

occurred to the point where a significant amount (for example 5 %) of the component surface exhibits corrosion of

the substrate.
3.22
reverse side
opposite side of the top side (see 3.26)
3.23
saturated colour
colour with Chroma C* ≥ 40
Note 1 to entry: Chroma C* is defined by CIE 15:2004.
3.24
substrate
base material from rolled steel flat products, with or without metallic coating
3.25
time of wetness

period during which a coated surface is covered by a film of electrolyte that is capable of causing

atmospheric corrosion (see EN ISO 12944-2)

Note 1 to entry: Guidance value for time of wetness can be calculated from the temperature and humidity relative

by summing the hours where the humidity relative is above 80 % and, at the same time, the temperature is above

0 °C.
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3.26
top side

side of the strip with the highest decorative demand and/or corrosion protection and which, in normal

production, is uppermost, respectively the exterior side of a coil
3.27
uncoated

condition in which parts of the surface of the substrate (e.g. one side of the strip) remain uncoated

3.28
UV resistance category

category of coating which presents a certain level of resistance to degradation by UV radiation

Note 1 to entry: Different categories of organic coil coated products for outdoor application classified following

their level of UV resistance are defined. Criteria of classification are related to their level of natural and artificial

outdoor UV resistance with relation to the cumulative solar energy of the outdoor exposure site.

3.29
test specimen
sample produced on a full scale production line with the complete paint system
3.30
rural atmosphere

atmosphere prevailing in rural areas and small towns, without significant contamination by corrosive

agents such as sulphur dioxide and/or chlorides
Note 1 to entry: See also EN ISO 12944-2.
3.31
urban atmosphere

contaminated atmosphere prevailing in densely populated areas without significant industry

Note 1 to entry: See also EN ISO 12944-2.

Note 2 to entry: It has moderate concentrations of pollutants such as sulphur dioxide and/or chlorides.

3.32
industrial atmosphere

atmosphere contaminated by corrosive pollutants from local and regional industry (mainly sulphur

dioxide)
Note 1 to entry: See also EN ISO 12944-2.
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prEN 10169:2021 (E)
3.33
marine atmosphere
atmosphere over and near the sea
Note 1 to entry: See also EN ISO 12944-2.

Note 2 to entry: A marine atmosphere will extend along a certain distance inland, depending on topography and

prevailing wind direction. It has a high content of sea-salt aerosols (mainly chlorides).

Note 3 to entry: The following explanations can be used for guidance:

— Low salinity is typical of areas located between 10 km and 20 km from the seashore.

— Moderate salinity is typical of areas located between 3 km and 10 km from the seashore.

— High salinity is typical of areas located from the seashore to 3 km inland.

Note 4 to entry: A distinction can be made between seashore and seafront. Seafront is defined as the place which is

submitted to direct attack by seawater and sea-salt aerosols
3.34
industrial and marine atmosphere

atmosphere which combines industrial atmosphere (3.32) and marine atmosphere (3.33) conditions

Note 1 to entry: See also EN ISO 12944-2.

Note 2 to entry: In a given type of atmospheric environment, various corrosivity categories can be registered

depending on the location, i.e.:

— open air: both climatic influences and corrosive agents can act on metallic materials,

— under shelter: except rain, sunlight irradiation and solar gain, other climatic influences and corrosive

agents can act on metallic materials.
4 Designation

For the steel substrates covered by this document (see 6.1.1), the steel names are allocated in accordance

with EN 10027-1, the steel numbers are allocated in accordance with EN 10027-2.

The products covered by this document shall be designated as follows in the order given:

a) type of product (e.g. strip, sheet or cut length, see EN 10079);
b) reference to this document (prEN 10169:2021);
c) complete designation of the substrate, i.e.:
1) steel name or number,
2) type and nominal mass of the metal coating,
3) n
...