NF A50-420-1, NF EN 485-1+A1

Décembre 2009

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NF A50-420-1, NF EN 485-1+A1 : 2009-12
FE165588 ISSN 0335-3931

European standard NF EN 485-1+A1

December 2009

French standard Classification index: A 50-420-1

ICS: 77.150.10

Aluminium and aluminium alloys

Sheet, strip and plate
Part 1: Technical conditions for inspection and delivery

F : Aluminium et alliages d'aluminium — Tôles, bandes et tôles épaisses —

Partie 1 : Conditions techniques de contrôle et de livraison
D : Aluminium und Aluminiumlegierungen — Bänder, Bleche und Platten —
Teil 1: Technische Lieferbedingungen

French standard approved

© AFNOR 2009 — All rights reserved

by decision of the Director General of AFNOR on November 25, 2009 taking effect
on December 25, 2009.
Replaces the approved standard NF EN 485-1, dated May 2008.

Correspondence The European standard EN 485-1:2008+A1:2009 has the status of French standard.

Analysis This document specifies the technical conditions for inspection and delivery
of wrought aluminium and wrought aluminium alloy sheet, strip and plate for general
applications. It also includes a provision for ordering and testing.
It applies to products with a thickness of over 0,20 mm up to and including 400 mm.

Descriptors Technical International Thesaurus: iron-and steel products, metal plates, steel
strips, aluminium, aluminium alloys, delivery, orders: sales documents, inspection,
tests.

Modifications With respect to the replaced document, limited revision regarding the following main
points:
— Article 1: the scope specifies that EN 485-1 relates to a general application
and that, for special applications, specific European standards exist;
— Paragraph 6.3.1: addition of a new paragraph after 6.3.1;
— Paragraph 6.12.1: at the second indent, addition of the last sentence that
specifies the location of additional samples;
— New Annex A listing the European standards dealing with special applications.

Corrections

Published and distributed by Association Française de Normalisation (AFNOR — French standard institute) — 11, rue Francis de Pressensé —
93571 La Plaine Saint-Denis Cedex — Tel.: + 33 (0)1 41 62 80 00 — Fax: + 33 (0)1 49 17 90 00 — www.afnor.org

© AFNOR 2009 AFNOR 2009 1st issue 2009-12-P

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PERSONAL WEBPORT pour client ALSTOM POWER le 28/03/2013 à 05:46
NF A50-420-1, NF EN 485-1+A1 : 2009-12

EUROPEAN STANDARD EN 485-1:2008+A1

NORME EUROPÉENNE
EUROPÄISCHE NORM October 2009

ICS 77.150.10 Supersedes EN 485-1:2008

English Version

Aluminium and aluminium alloys - Sheet, strip and plate - Part 1:

Technical conditions for inspection and delivery

Aluminium et alliages d'aluminium - Tôles, bandes et tôles Aluminium und Aluminiumlegierungen - Bänder, Bleche
épaisses - Partie 1: Conditions techniques de contrôle et de und Platten - Teil 1: Technische Lieferbedingungen
livraison

This European Standard was approved by CEN on 19 January 2008 and includes Amendment 1 approved by CEN on 20 September 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 485-1:2008+A1:2009: E
worldwide for CEN national Members.
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EN 485-1:2008+A1:2009 (E)

Contents Page

Foreword ..............................................................................................................................................................3
1 Scope ......................................................................................................................................................5
2 Normative references ............................................................................................................................5
3 Terms and definitions ...........................................................................................................................6
4 Ordering information .............................................................................................................................6
5 Requirements .........................................................................................................................................8
6 Test methods..........................................................................................................................................9
7 Inspection documents ........................................................................................................................ 16
8 Marking of products ........................................................................................................................... 16
9 Packaging ............................................................................................................................................ 17
10 Complaints of non conformity........................................................................................................... 17
Annex A (normative) !European Standards for strip, sheet and plate of special form and for special
applications"" .................................................................................................................................... 18
Bibliography ..................................................................................................................................................... 19

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Foreword
This document (EN 485-1:2008+A1:2009) has been prepared by Technical Committee CEN/TC 132 “Aluminium
and aluminium alloys”, the secretariat of which is held by AFNOR.

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 April 2010, and conflicting national standards shall be withdrawn at the latest by
April 2010.

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 includes Amendment 1, approved by CEN on 2009-09-20.

This European Standard supersedes !EN 485-1:2008".

The start and finish of text introduced or altered by amendment is indicated in the text by tags ! ".

Within its programme of work, Technical committee CEN/TC 132 entrusted CEN/TC 132/WG 7 "Sheets, strips and
plates" to revise EN 485-1:1993.

EN 485 comprises the following parts under the general title "Aluminium and aluminium alloys — Sheet, strip and
plate":

 Part 1: Technical conditions for inspection and delivery

 Part 2: Mechanical properties

 Part 3: Tolerances on dimensions and form for hot-rolled products

 Part 4: Tolerances on shape and dimensions for cold-rolled products

Besides very slight additional adjustments in the text and update of normative references, the following technical
changes have been made:

 Clause 1: thickness increased to 400 mm;

 addition of Clause 6 (previously in EN 485-2);

 Clause 7 amended;

 addition of Claude 10;

 addition of Bibliography.

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.

CEN/TC 132 affirms it is policy that in the case when a patentee refuses to grant licences on standardised standard
products under reasonable and not discriminatory condition, then this product shall be removed from the
corresponding document.

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,

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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.

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1 Scope
This document specifies the technical conditions for inspection and delivery of wrought aluminium and wrought
aluminium alloy sheet, strip and plate for !general applications". It also includes !provisions" for ordering
and testing.

It applies to products with a thickness over 0,20 mm up to and including 400 mm.

!deleted text"

!For many special applications of aluminium strip, sheet and plate, specific European Standards exist, where
different or additional requirements are formulated and the appropriate alloys and tempers are selected: see
Annex A. Most of these special European Standards refer to provisions of this document.

The selection of the relevant special European Standards is under the responsibility of the purchaser.

Whenever the application involves special properties, such as corrosion resistance, toughness, fatigue strength,
surface appearance and welding properties, the user should consult the supplier and consider the relevant special
European Standard, as applicable. "

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.

!EN 485-2:2008", Aluminium and aluminium alloys — Sheet, strip and plate — Part 2: Mechanical properties

EN 485-3, Aluminium and aluminium alloys — Sheet, strip and plate — Part 3: Tolerances on dimensions and form
for hot-rolled products

EN 485-4, Aluminium and aluminium alloys — Sheet, strip and plate — Part 4: Tolerances on shape and
dimensions for cold-rolled products

EN 515, Aluminium and aluminium alloys — Wrought products — Temper designations

EN 573-3, Aluminium and aluminium alloys — Chemical composition and form of wrought products — Part 3:
Chemical composition and form of products

EN 1669, Aluminium and aluminium alloys — Test methods — Earing test for sheet and strip

EN 2004-1, Aerospace series — Test methods for aluminium and aluminium alloy products — Part 1:
Determination of electrical conductivity of wrought aluminium alloys

EN 10002-1, Metallic materials — Tensile testing — Part 1: Method of test at ambient temperature

EN 10204, Metallic products — Type of inspection documents

EN 12258-1:1998, Aluminium and aluminium alloys — Terms and definitions — Part 1: General terms

EN 14242, Aluminium and aluminium alloys — Chemical analysis — Inductively coupled plasma optical emission
spectral analysis

EN 14361, Aluminium and aluminium alloys — Chemical analysis — Sampling from metal melts

EN ISO 7438, Metallic materials — Bend test (ISO 7438:2005)

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EN ISO 20482, Metallic materials — Sheet and strip — Erichsen cupping test (ISO 20482:2003)

ISO 9591, Corrosion of aluminium alloys — Determination of resistance to stress corrosion cracking

ASTM G34, Standard Test Method for Exfoliation Corrosion Susceptibility in 2XXX and 7XXX Series Aluminum
Alloys (EXCO Test)

ASTM G47, Standard Test Method for Determining Susceptibility to Stress-Corrosion Cracking of 2XXX and 7XXX
Aluminum Alloy Products

ASTM G66, Standard Test Method for Visual Assessment of Exfoliation Corrosion Susceptibility of 5XXX Series
Aluminum Alloys (ASSET Test)

ASTM G67, Standard Test Method for Determining the Susceptibility to Intergranular Corrosion of 5XXX Series
Aluminum Alloys by Mass Loss After Exposure to Nitric Acid (NAMLT Test)

3 Terms and definitions

For the purposes of this document, the terms and definitions given in EN 12258-1:1998 and the following apply.

3.1
sheet/plate
flat rolled product of rectangular cross-section with uniform thickness between 0,20 mm and 6 mm for sheet or
above 6 mm for plate, supplied in straight lengths (i.e. flat) usually with trimmed or sawn edges

NOTE 1 For sheet, the thickness does not exceed one-tenth of the width.

NOTE 2 Corrugated, embossed (with patterns, for example grooves, ribs, checkers, tears, buttons, lozenges), coated, edge
conditioned and perforated products in this general form when derived from sheet as defined above are classified as sheet.

NOTE 3 Flat sheets and plates material between 3 mm and 15 mm are sometimes called “shate".

3.2
strip
flat rolled product of rectangular cross-section with uniform thickness over 0,20 mm, supplied in coils usually with
trimmed edges

NOTE 1 The thickness does not exceed one-tenth of the width.

NOTE 2 Corrugated, embossed (with patterns, for example grooves, ribs, checkers, tears, buttons, lozenges), coated, edge
conditioned and perforated products in this general form when derived from sheet as defined above are classified as sheet.

NOTE 3 "Strip" is sometimes called "coil".

3.3
order document
document or set of documents agreed between supplier and purchaser at the time of ordering

NOTE An order document can be an order of the purchaser confirmed by the supplier or a quotation of the supplier
confirmed by the purchaser.

4 Ordering information
The order document shall contain the following:

a) form and type of product:

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 form of the product (sheet, strip, plate, etc.);

 designation of the aluminium or aluminium alloy;

b) temper of the material for delivery according to EN 515 and, if different, the temper for use;

c) reference to this European Standard;

d) specification of mechanical properties, if additional to or different from !EN 485-2";

e) reference to the standard for tolerances of form and dimensions (EN 485-3 or EN 485-4);

f) dimensions and shape of the product:

 thickness;

 width;

 length of sheet and plate, as applicable (in the rolling direction);

 internal and external diameters of the coil, or dimension and type of the core, as applicable.

NOTE 1 Unless otherwise agreed, the length is the largest dimension of the sheet or plate and corresponds to the rolling
direction.

g) specification or tolerances, if additional to or different from EN 485-3 or EN 485-4;

h) quantity:

 mass or number of pieces;

 quantity tolerances if required;

i) any requirements for inspection documents;

j) any other test, in addition to chemical analysis and tensile testing;

k) any additional requirements, such as:

 quality assurance;

 specific inspection schemes;

 marking of products;

 references of drawing, etc.;

 special packing requirements;

l) for products intended for decorative anodizing by the purchaser, the order document shall also contain the
following:

 statement that the product is intended to be anodized;

 intended particular surface treatment (according to the relevant European Standard);

 whether a decorative appearance after anodizing is required for both sides and, if only one side, its
position with respect to the strip (inside or outside of the coil) or the sheet or plate (upside or downside).

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Products intended to form a specific area after anodizing (such as a façade) should be ordered in a single batch.

The order document should indicate the intended application.

NOTE 2 The codification scheme specified in EN 573-5 should be used.

5 Requirements

5.1 Responsibilities of the supplier and manufacturer

The supplier shall be responsible that all inspections and tests required by the relevant standard and/or the
particular specification have been performed, prior to shipment of the product.

Unless otherwise specified in the order document, the production and manufacturing processes shall be left to the
discretion of the manufacturer. Unless it is explicitly stated in the order document, no obligation shall be placed on
the manufacturer to use the same processes for similar and subsequent orders.

5.2 Requirements on product properties

5.2.1 Chemical composition

The chemical composition shall comply with the requirements as specified in EN 573-3.

If the purchaser requires content limits for elements not specified in the above standard, these limits shall be stated
in the order document.

5.2.2 Mechanical properties

The mechanical properties determined by the tensile test shall be in conformity with those specified in
!EN 485-2", if not otherwise stated in the order document. Other properties such as hardness, bending ability,
isotropy, etc. can be specified in the order document.

5.2.3 Corrosion behaviour

Products made of 5xxx alloys with nominal magnesium content equal to or higher than 3 % in the H116 and H321
tempers shall be capable of exhibiting no evidence of exfoliation corrosion when subjected to ASTM G66
accelerated exfoliation corrosion susceptibility test and/or Intergranular corrosion susceptibility according to
ASTM G67.

Plate exhibit made of alloys EN AW-7010 and EN AW-7075 in the T73 and T7351 tempers and over 25 mm in
thickness, shall exhibit no evidence of stress-corrosion cracking when tested in accordance with ASTM G47 or in
ISO 9591.

Products made of alloys EN AW-7010 and EN AW-7075 in the tempers T76 and T7651 shall be capable of
exhibiting no evidence of exfoliation corrosion in excess of grade EB, as defined in ASTM G34, when subjected to
the test specified in 6.10.2.

5.2.4 Freedom from defects

The product shall be free from defects prejudicial to its suitable and proper use.

It shall have a smooth and clean surface. However small surface imperfections such as light scratches,
indentations, laminations, stripes, roll marks, discolorations and non-uniform surface appearance resulting from
heat-treatment, etc., which cannot always be totally avoided, are generally permitted on both sides of the product.

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Whilst an operation designed to mask a defect is not permitted, superficial defects may be eliminated, provided that
the dimensional tolerances and material properties continue to meet the specifications.

For products intended for decorative anodizing, the superficial imperfections (discolouration, mechanical or
structural imperfections) may not be so extensive as to impair the decorative appearance after the agreed surface
treatment. Limiting samples can be agreed between supplier and purchaser.

5.2.5 Tolerances on dimensions and form

!The dimensions and form tolerances shall be in conformity with EN 485-3 and EN 485-4, unless otherwise
agreed upon between supplier and purchaser and stated in the order document. Unless otherwise agreed upon,
the purchaser may reject only those products having dimensions not complying with the specified tolerances."

6 Test methods

6.1 General

If the purchaser wishes to inspect the product at the supplier's works, he shall notify the supplier at the time of
placing the order.

6.2 Chemical analysis

Sampling shall be carried out at the time of casting according to EN 14361. The average content accuracy to each
sample shall be within the specification for the chemical composition.

NOTE 1 EN 14361 includes criteria how to determine number, volume and shape of sample, about time and location of
sampling and about the design and maintenance of the tools, in order to make sure that the average chemical composition of
the sample is representative of the average chemical composition of the whole melt.

The range of application and accuracy of the test procedure used shall be validated and proved by the supplier.

In case of dispute concerning the chemical composition, referee analysis shall be carried out in accordance with
EN 14242.

NOTE 2 For the fast determination of the chemical composition different spectral analysis methods are used (e.g. S-OES,
XRF, GDOES). For S-OES see EN 14726.

6.3 Tensile test

6.3.1 General

The tensile test shall be carried out in accordance with EN 10002-1.

Specimens shall be taken from the sample after completion of all the mechanical and thermal treatments that the
product has to undergo prior to delivery, and which can influence the mechanical properties of the metal. In cases
where this is not possible, the specimens may be taken at an earlier stage, but they shall be subjected to the same
treatment as that to which it is intended to submit the product concerned.

Cutting shall be carried out in such a manner that it does not change the characteristics of the part of the specimen
from which the test pieces are to be prepared. Thus, the dimensions of the specimens shall provide an adequate
machining allowance to permit removal at the zone affected by cutting.

Specimens shall not be machined or treated in any way by which their mechanical properties can be altered. Any
straightening required shall be carried out with great care, preferably by hand.

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!If the purchaser intends to convert the material to a final temper which is different from the "as supplied" temper,
then additional testing should be agreed between supplier and purchaser, in order to ensure that the material is
capable to meet the specified properties of the final temper.

It is only necessary for the supplier to confirm that selected samples, heat-treated using supplier laboratory
conditions, meet the properties specified for the final temper required by the purchaser."

6.3.2 Number of specimens

Unless otherwise specified in the order document, one specimen shall be taken from each inspection lot of
10 000 kg or part thereof or from each treatment batch or lot.

For single plates or for coils weighing more than 10 000 kg each, only one specimen per plate or coil shall be
taken.

6.3.3 Location and size of specimens

Specimens shall be taken from samples in such a way that it is possible to orientate the test pieces in relation to
the product.

The specimens shall be large enough to allow the manufacture of sufficient test pieces for the required tests in the
specified orientation, and for any retests which can be required.

In the case of solution heat treated plate, the specimens shall be taken after having cut off the quenched end of the
plate. The cut off distance on length shall be at least one half of the thickness or 150 mm, whichever is smaller, e.g.
a 300 mm thick plate would require 150 mm to be cut off the length before the specimen is taken.

In the case of stretched sheet or plate, a sufficient length has to be cut off before the specimen is taken, in order to
avoid bias due to inhomogeneous deformation during stretching.

Specimens shall be taken from the half-width or one-third-width position on the strip, sheet or plate. The first and
the following specimens shall be taken at same location.

6.3.4 Identification

Each test pieces and specimens shall be marked in such a manner that, after removal, it is always possible to
identify the product from which it is taken and its location and orientation. If, during the course of subsequent
operations, removal of the markings cannot be avoided, new markings, marked envelopes label shall be made
before the originals are removed.

Each test piece shall be marked in such a manner that it is possible to identify the inspection lot from which it was
taken and, if required, its location and orientation in the product.

If a test piece is marked by stamping, this shall not be in a place or manner which can interfere with subsequent
testing.

Where it is not convenient to mark a test piece, an identification tag may be attached1).

6.3.5 Shape, dimensions and orientation of test pieces

Normally the test pieces shall be taken with their length transverse (or long transverse) to the principal direction of
rolling. If the width of the product is less than 300 mm, then test in the longitudinal direction is permitted. In both
cases the mechanical property limits specified in Tables 1 to 46 of !EN 485-2:2008" shall apply.

1) Alternative methods, such as specially designed boxes, may be used for the purpose of test piece identification.

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For specified thicknesses up to and including 10 mm the test piece shall have a rectangular (or square) cross
section (flat test piece). Its reduced section shall be 12,5 mm wide and its thickness equal to the full thickness of
the product. The test piece shall be prepared so that both rolled surfaces are included undisturbed.

For specified thicknesses from 10 mm up to and including 12,5 mm the test piece may have a circular or a
rectangular cross-section.

For specified thicknesses exceeding 12,5 mm the test piece shall have a circular cross section with a
recommended diameter of 10 mm for its reduced section (round test piece).

For specified thicknesses up to and including 40 mm, the longitudinal axis of the round test pieces shall be located
at a distance from the surface equal to half the thickness.

For specified thicknesses over 40 mm, the longitudinal axis of the round test pieces shall be located at a distance
from one of the surfaces equal to one quarter of the thickness.

Machined test pieces of rectangular or circular cross-section (as applicable) shall be used.

Recommended shapes for rectangular and round test pieces are shown in Figures 1 and 2 and further specified in
EN 10002-1.

NOTE The properties measured in the longitudinal direction are different from those measured in the transverse direction.

6.3.6 Machining of test pieces

Any machining necessary shall be carried out in such a manner that it does not change the characteristics of the
metal in the test piece.

6.3.7 Number of test pieces

One test piece shall be taken from each specimen.

6.3.8 Procedure

During a test to determine proof stress, the rate of stress application shall not exceed 12 MPa/s. After removal of
the extensometer the rate of straining may be increased but it shall not exceed 50 % of the length of the reduced
section per minute.

For determination of compliance, proof stress and tensile strength values shall be rounded to the nearest 1 MPa
and elongation values to the nearest 1 % using the rounding rules specified in !EN 485-2".

Elongation for rectangular (or square) test pieces shall be measured using an original gauge length of 50 mm.

Elongation for round test pieces shall be measured using an original gauge length equal to 5 D where D is the
diameter of the reduced section.

6.4 Bend test

Sheet, strip and plate shall be capable of being bent cold through an angle of 90° or 180°, as applicable, around a
pin having a radius equal to k times the thickness t of the sheet, strip or plate (e.g. 2,5 t) without cracking.
Recommended values of the minimum bend radii for different alloys, tempers and thicknesses are given in
Tables 1 to 46 of !EN 485-2:2008". Compliance with these values and/or conduct of the test is only required
when so specified on the order.

The test shall be carried out in accordance with EN ISO 7438, particular attention being paid to the following:

 bend test shall be carried out on a specimen taken adjacent to the tensile test specimen;

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 test piece shall be taken in the transverse direction, the bend axis being parallel to the rolling direction. For
material less than 150 mm wide, the test piece may be taken in the rolling direction;

 width of the test piece shall be at least 20 mm and preferably 40 mm to 50 mm. For material less than 20 mm
wide, the width of the test piece shall be the full width of the material;

 edges of the test piece may be machined when practical. They may be rounded to a radius of approximately
2 mm.

Dimensions in millimetres

Standard test piece

Key
Nominal width 12,5
G - gauge length 50,0 ± 0,5
W – width 12,5 ± 0,10
t – thickness thickness of material
R - radius of fillet, min. 12,5
L - overall length, min. 200
A - length of reduced section, min. 57
B - length of grip section, min. 50
C - width of grip section, approximate 20

Figure 1 — Standard rectangular tensile test piece

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Dimensions in millimetres

Standard test piece Small-size test pieces proportional to standard

Nominal diameter 10 8 6 4
G - gauge length 50,0 ± 0,5 40,0 ± 0,5 30,0 ± 0,5 20,0 ± 0,5
D - diameter 10,0 ± 0,10 8,0 ± 0,10 6,0 ± 0,10 4,0 ± 0,05
R - radius of fillet, min. 9 8 6 4
A - length of reduced section, min. 60 48 36 24

Figure 2 — Standard 10 mm tensile test piece with 50 mm gauge length and examples of small size
proportional test pieces

6.5 Hardness test

Hardness test can be a convenient means for checking the homogeneity of a lot; it can also be used for a quick
semi-quantitative check of the thermal treatment to which the material has been submitted or, as a first approach,
for material identification purpose. However its accuracy is generally less than can be expected from a tensile test
which it cannot replace.

NOTE Hardness can be measured at different locations, e.g. on the surface of the product or on the tensile specimen. For
some materials, results can be different.

The values in Tables 1 to 46 of !EN 485-2:2008" are typical Brinell hardness (HBW) values for a test carried
out according to EN ISO 6506-1 with a 2,5 mm diameter steel ball. They are given for information only.

If the Brinell hardness test is not possible (because of thin thickness or soft temper) then Vickers hardness test,
according to EN ISO 6507-1, may be used. In that case the values will be approximately 10 % above the stated
Brinell values.

Table 1, given for convenience, shows for several HBW values the minimum thickness down to which the hardness
measurement remains valid, according to the rules stated in EN ISO 6506-1, using a 2,5 mm diameter steel ball
and a load of 612,9 N.

Table 1 — Minimum material thickness and Brinell hardness values

Brinell hardness (HBW) 30 40 50 60 70 80 90 100

Minimum thickness (mm) 2,1 1,6 1,3 1,1 0,91 0,80 0,71 0,64
Brinell hardness (HBW) 110 120 130 140 150 160 170 180
Minimum thickness (mm) 0,58 0,53 0,49 0,45 0,42 0,40 0,37 0,35

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6.6 Electrical conductivity

Electrical conductivity measurements are required for lot acceptance purposes, in the case of alloys EN AW-7075
in the tempers T73, T7351, T76 and T7651, in order to assess the resistance to stress corrosion cracking or the
exfoliation-corrosion resistance of the material as applicable.

The specimen for electrical conductivity testing shall be taken adjacent to the tensile test specimen.

The measurement shall be carried out by the eddy current method as specified in EN 2004-1. The reference blocks
to be used shall be agreed between supplier and purchaser. The results shall be rounded to the nearest 0,1 MS/m,
using the rounding rules.

The acceptance criteria are shown in Table 45 of !EN 485-2:2008".

6.7 Dimensions

The dimensions shall be measured by means of measuring instruments which are of the accuracy required by the
dimensions and the dimensional tolerances as specified in EN 485-3 and EN 485-4.

All dimensions shall be checked at the ambient temperature of the workshop or laboratory, and, in case of dispute,
at a temperature between 15 °C and 25 °C.

6.8 Surface finish

Unless otherwise specified, examination of surface appearance, if required, shall be carried out without the
assistance of magnifying apparatus on products before delivery.

For products intended to be anodized, anodizing test should be carried out by the manufacturer on the products
before delivery. The frequency and the conditions of the test may be agreed between manufacturer and purchaser.

6.9 Stress corrosion resistance

For the purpose of this standard the following provisions shall apply:

 minimum of three adjacent replicate test pieces shall be taken from each specimen and submitted to the test;

 exposure shall be carried out by alternate immersion in a 3,5 % by mass sodium chloride solution in water;

 test pieces shall be stressed in the short transverse direction with a stress level of 75 % of the specified proof
stress;

 no stress-corrosion related rupture shall be observed after a minimum exposure time of 20 days.

The method of stressing (bending, uniaxial loading, C-ring, etc.), the shape and dimensions of the test pieces and
the frequency of the test are left to the discretion of the manufacturer, who shall maintain records of all lots so
tested and make them available for examination at the manufacturer facility for not less than five years.

For lot acceptance-purposes resistance to stress corrosion cracking for each lot of material shall be established by
testing the previously selected tensile test specimens to the criteria shown in Tables 41 and 45 of
!EN 485-2:2008".

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6.10 Exfoliation and intergranular corrosion resistance (5xxx series alloys)

!6.10.1 General"

The test shall be carried out on full thickness test pieces for material less than 2,5 mm in thickness. For material 2,5
mm or more in thickness, 10 % of the thickness shall be removed by machining, from one as-rolled surface, and
both the machined and as-rolled surfaces submitted to the test and evaluated.

For lot acceptance purposes, the acceptability of each lot of material mentioned in 5.2.3 shall be determined by
either testing each lot to the ASTM G66 and ASTM G67 standards or by metallographic examination of one
specimen per lot selected from midsection at one end of a random sheet, plate or coil, using the following
procedure:

 section perpendicular to the rolling surface and parallel to the rolling direction shall be polished (preferably
electrolytic polish) and then microetched for 3 min, using a solution of 40 ml of 85 % phosphoric acid in 60 ml
distilled water, at (35 ± 5) °C;

 metallographic examination shall be carried out at 500 times magnification.

The revealed microstructure shall be predominantly free of a continuous grain boundary network of aluminium
material. If the microstructure shows evidence of Al3Mg2 precipitates in excess of the relevant reference, the lot is
either rejected or subjected to the ASTM G66- test.

Reference photomicrographs shall be established on acceptable material (according to ASTM G66-95), for each
thickness range specified in Table 25 (EN AW-5059) or Table 27 (EN AW-5083) or Table 28 (EN AW-5086) or
Table 33 (EN AW-5383) as applicable (Tables 25, 27, 28, 33 of !EN 485-2:2008"). Production practices shall
not be changed after establishment of these references.

Significant changes in production practices that alter the microstructures of the alloy shall require the establishment
of new reference photomicrographs as described above.

The manufacturer shall maintain at the producing facility all records relating to the establishment of reference
photomicrographs and production practices.

6.10.2 Exfoliation corrosion resistance (7xxx series alloys)

For lot acceptance-purposes, resistance to exfoliation corrosion for each lot of material shall be established by
testing the previously selected tensile test specimens to the criteria shown in Tables 41 and 45 of
!EN 485-2:2008".

When carried out, for monitoring purposes, the test shall be in accordance with ASTM G34, and the following
additional requirements shall apply:

 specimens for test shall be selected at random from material considered acceptable in accordance with the lot
acceptance criteria shown in Tables 41 and 45 of !EN 485-2:2008", for each thickness range listed in that
table;

 test pieces shall be a minimum of 50 mm × 100 mm with the 50 mm dimension parallel to the direction of final
rolling. They shall include the full-section thickness of the material, except that for material 2,5 mm or more in
thickness, 10 % of the thickness shall be removed by machining the test surface. For machined test pieces,
the machined surface shall be evaluated by exposure to the test solution;

 frequency of the test is left to the discretion of the producer, who shall maintain records of all lots so tested and
make them available for examination at the manufacturer facility for not less than five years.

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6.11 Other tests

If other mechanical or physical tests are required, these shall be agreed between the manufacturer and the
purchaser. These tests shall be carried out either in accordance with the existing European or International
standards or agreed upon by the manufacturer and the purchaser. If not otherwise agreed between manufacturer
and purchaser, the following standards shall be used:

 earing test: the test shall be carried out according to EN 1669;

 Erichsen test: the test shall be carried out according to EN ISO 20482.

6.12 Retest

6.12.1 Mechanical properties

If any one of the test pieces first selected fails to meet the requirements for the mechanical tests, the following
procedure shall be applied:

 if an error is clearly identified, either in the test piece preparation or in the test procedure, then the
corresponding result shall be disregarded and the testing carried out as initially required;

 !if this not the case, then two further specimens shall be taken from the same lot, at least one being from the
same unit of product (sheet, strip, etc.) from which the original specimen was taken, unless that piece of
product has been withdrawn by the supplier. The additional samples shall be taken adjacent to the failed
specimen or from the same location if one sample is taken from another unit of product from the same lot."

If both test pieces from these additional specimens meet the requirement, the lot which they represent shall be
deemed to comply with the requirements of this European Standard.

Should one test piece fail:

 lot shall be deemed not to comply with the requirements of this European Standard;

 or, where applicable, the lot may be submitted to additional thermal treatment(s) and then retested as a new
lot.

6.12.2 Other properties

The retests of other properties shall be agreed upon between manufacturer and purchaser.

7 Inspection documents
When requested by the purchaser and agreed upon by the manufacturer, the manufacturer shall provide the
appropriate inspection document in accordance with EN 10204.

8 Marking of products
Marking of products shall be undertaken when agreed upon between supplier and purchaser and stated on the
order. Marking shall not adversely affect the final use of the product.

Each shipping container shall be marked with the purchase order number, products size, specification or standard
number, alloy and temper, gross and net weights, and the manufacturer name or trademark.

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9 Packaging
Unless otherwise specified in European Standard relating to special products or specified in the order document,
the method of packaging shall be determined by the manufacturer who shall take all suitable precautions to ensure
that, under the usual conditions of handling and transportation, the products will be delivered in a condition suitable
for use, while meeting any packaging regulation in countries through which the product will pass.

Each package shall contain only one size, alloy and temper of material, unless otherwise agreed upon between
supplier and purchaser.

10 Complaints of non conformity

In cases of dispute concerning conformity with the requirements of this European Standard or specification cited on
the order, before rejecting the products, testing and examination shall be carried out by an arbitrator chosen by
mutual agreement between purchaser and supplier.

The arbitrator's decision shall be final.

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Annex A
(normative)

!European Standards for strip, sheet and plate of special form and for
special applications

For many special applications of aluminium strip, sheet and plate, specific European Standards exist, see
Table A.1, where different or additional requirements are specified and the appropriate alloys and tempers are
selected.

Table A.1 — European Standards for strip, sheet and plate of special form and for special applications

Form of product Application Relevant European Standard

Reroll stock All, mainly foil EN 12482-1 and EN 12482-2
Finstock Heat exchangers EN 683-1
Tread plate General EN 1386
Sheet and strip Cans, closures and lids EN 541
Coil coated strip and sheet General EN 1396
Sheet, strip and plate Marine prEN 131952)
Sheet, strip and plate Aerospace To be specified by the purchaser
Sheet and plate Railway EN 13981-2
Sheet, strip and plate Electrical conductors EN 14121
Plate Forging stock EN 603
Sheet, strip and plate Structural products for EN 15088
construction works
Circle and circle stock General EN 941
Circle and circle stock Culinary EN 851
Sheet and plate Tanks for dangerous goods EN 14286
Sheet and plate Pressure vessels EN 12392
Sheet and strip Packaging EN 14287
Sheet, strip and plate Contact with foodstuff EN 602
Sheet, strip and plate, anodised Contact with foodstuff EN 14392
"

2) Under preparation.

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Bibliography

EN 573-5, Aluminium and aluminium alloys — Chemical composition and form of wrought products — Part 5:
Codification of standardized wrought products

EN 14726, Aluminium and aluminium alloys — Chemical analysis — Guideline for spark optical emission
spectrometric analysis

EN ISO 6506-1, Metallic materials — Brinell hardness test — Part 1: Test method (ISO 6506-1:2005)

EN ISO 6507-1, Metallic materials — Vickers hardness test — Part 1: Test method (ISO 6507-1:2005)

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