Steel sheet, aluminium-silicon alloy-coated by the continuous hot-dip process, of commercial and drawing qualities

This document is applicable to the minimum requirements for steel sheet, in coils and cut lengths, metallic-coated by the continuous hot-dip process, with aluminium-silicon alloy coating. The product is intended for heat-resisting applications and also where both corrosion and heat resistance are required. The steel sheet is produced in a number of quality designations and grades, coating mass, surface treatments and coating finish conditions to be compatible with differing application requirements.

Tôles en acier au carbone laminées à froid, revêtues par immersion à chaud en continu d'une couche d'aluminium-silicium, de qualité commerciale et pour emboutissage

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Status
Published
Publication Date
20-May-2019
Current Stage
6060 - International Standard published
Due Date
28-Oct-2020
Completion Date
21-May-2019
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ISO 5000:2019 - Steel sheet, aluminium-silicon alloy-coated by the continuous hot-dip process, of commercial and drawing qualities
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INTERNATIONAL ISO
STANDARD 5000
Fifth edition
2019-05
Steel sheet, aluminium-silicon alloy-
coated by the continuous hot-dip
process, of commercial and drawing
qualities
Tôles en acier au carbone laminées à froid, revêtues par immersion
à chaud en continu d'une couche d'aluminium-silicium, de qualité
commerciale et pour emboutissage
Reference number
ISO 5000:2019(E)
©
ISO 2019

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ISO 5000:2019(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2019
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
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CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
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Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved

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ISO 5000:2019(E)

Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Dimensions . 2
5 Conditions of manufacture . 3
5.1 Steelmaking . 3
5.2 Chemical composition . 3
5.3 Chemical analysis . 3
5.3.1 Heat analysis . . 3
5.3.2 Product analysis . 3
5.4 Mechanical properties . 4
5.4.1 Ordering conditions . 4
5.4.2 Fabrication qualities . 4
5.4.3 Interstitial free steel . . 5
5.5 Coating . 6
5.5.1 Silicon content. 6
5.5.2 Coating mass. 6
5.5.3 Coating adherence . 6
5.6 Weldability . 7
5.7 Coating finish condition . 7
5.8 Surface treatment . 7
5.8.1 Mill passivation . 7
5.8.2 Oiling . 7
5.9 Coated coil joining . 7
5.10 Dimensional and shape tolerances . 7
6 Sampling . 8
6.1 Tensile test . 8
6.2 Coating tests . 8
6.2.1 Coating mass. 8
6.2.2 Triple-spot test . 8
6.2.3 Single-spot test . 8
6.2.4 Coating adherence . 8
7 Test methods . 8
7.1 Tensile test . 8
7.2 Coating properties . 9
7.2.1 Coating mass. 9
7.2.2 Coating adherence . 9
8 Designation system . 9
8.1 General . 9
8.2 Coating designation . 9
8.3 Coating mass . 9
8.4 Coating finish condition . 9
8.5 Surface treatment . 9
8.6 Base-metal quality .10
8.7 Examples .10
9 Retests .10
9.1 Machining and flaws.10
9.2 Elongation .10
9.3 Additional tests .11
10 Resubmission .11
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ISO 5000:2019(E)

11 Workmanship .11
12 Inspection and acceptance .11
13 Coil size .11
14 Marking .11
15 Information to be supplied by the purchaser.12
Annex A (normative) Orders requiring base-metal thickness .13
Annex B (normative) Determination of mass of coating on aluminium-silicon alloy-coated
steel sheet .14
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ISO 5000:2019(E)

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso
.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 12, Continuous
mill flat rolled products.
This fifth edition cancels and replaces the fourth edition (ISO 5000:2011), which has been technically
revised. The main changes compared to the previous edition are as follows:
— editorial updates throughout for clarity.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
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INTERNATIONAL STANDARD ISO 5000:2019(E)
Steel sheet, aluminium-silicon alloy-coated by the
continuous hot-dip process, of commercial and drawing
qualities
1 Scope
This document is applicable to the minimum requirements for steel sheet, in coils and cut lengths,
metallic-coated by the continuous hot-dip process, with aluminium-silicon alloy coating.
The product is intended for heat-resisting applications and also where both corrosion and heat
resistance are required.
The steel sheet is produced in a number of quality designations and grades, coating mass, surface
treatments and coating finish conditions to be compatible with differing application requirements.
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.
ISO 6353 (all parts), Reagents for chemical analysis
ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
ISO 7438, Metallic materials — Bend test
ISO 16163, Continuously hot-dipped coated steel sheet products — Dimensional and shape tolerances
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
3.1
commercial
base-metal quality intended for general fabricating purposes where sheet is used in the flat condition,
or for bending or moderate forming
3.2
drawing
base-metal quality intended for parts where drawing or severe forming may be involved
3.3
deep drawing
base-metal quality intended for parts where severe forming or severe drawing may be involved
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ISO 5000:2019(E)

3.4
deep drawing aluminium killed
base-metal quality intended for fabricating parts where particularly severe drawing or forming may be
involved
3.5
extra-deep drawing stabilized
base-metal quality intended for applications where maximum formability is required by applying
interstitial free steel
3.6
interstitial free steel
IF steel
extra-low-carbon steel in which all interstitial elements are combined with titanium and/or equivalent
elements
Note 1 to entry: Interstitial free steel is sometimes referred to as stabilized steel.
3.7
differential coating
coating deliberately produced to have a different coating mass (3.9) on each surface
3.8
breakage allowance
agreed upon level of acceptable die breakage not subject to claim
3.9
coating mass
total amount of coating on both sides of the sheet, expressed in grams per square metre
3.10
normal spangle
coating formed as a result of the unrestricted growth of aluminium-silicon alloy crystals during normal
solidification
3.11
skin pass
light cold rolling of the product
Note 1 to entry: The purpose of the skin passing is one or more of the following: to minimize the appearance of
coil breaks, stretcher strains and fluting; to control the shape; and to obtain the required surface finish.
Note 2 to entry: Some increase in hardness and some loss in ductility will result from skin passing.
3.12
lot
up to a specified quantity of steel sheet of the same designation rolled to the same thickness and coating
condition
3.13
smooth finish
smoothness produced by skin-passing the coated material in order to achieve an improved surface
condition as compared with the normal as-coated product
4 Dimensions
4.1 Aluminium-silicon alloy-coated steel sheet is produced in thicknesses from 0,40 mm to 3,0 mm
inclusive and in widths of 600 mm to 1 500 mm in coils and cut lengths. Aluminium-silicon alloy-coated
sheet less than 600 mm wide, slit from wide sheet, is considered as sheet.
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ISO 5000:2019(E)

4.2 The thickness of aluminium-silicon alloy-coated steel sheets may be specified as a combination
of the base metal and metallic coating, or as base metal alone. The purchaser shall indicate on the order
which method of specifying thickness is required. In the event that the purchaser does not indicate any
preference, the thickness as a combination of the base metal and coating will be provided. Annex A
describes the requirements for specifying the thickness as base metal alone.
5 Conditions of manufacture
5.1 Steelmaking
Unless otherwise agreed by the interested parties, the processes used in making the steel and in
manufacturing aluminium-silicon alloy-coated sheet are left to the discretion of the manufacturer. On
request, the purchaser shall be informed of the steelmaking process being used.
5.2 Chemical composition
The chemical composition (heat analysis) shall conform to the requirements given in Tables 1 and 2.
5.3 Chemical analysis
5.3.1 Heat analysis
An analysis of each heat shall be made by the manufacturer in order to determine conformity with
the requirements given in Tables 1 and 2. On request, a report of the heat analysis shall be made
available to the purchaser or the purchaser’s representative. Each of the elements listed in Tables 1 and
2 shall be included in the report of the heat analysis. When the amount of copper, nickel, chromium or
molybdenum present is less than 0,02 %, the analysis may be reported as “<0,02%”.
5.3.2 Product analysis
A product analysis may be made by the purchaser in order to verify the specified analysis of the product
and shall take into consideration any normal heterogeneity. The product analysis shall be in accordance
with Tables 2 and 3.
Table 1 — Chemical composition (heat analysis)
Mass fractions in percent
Base-metal quality C Mn P S Ti
Designation Name max. max. max. max. max.
01 Commercial 0,15 0,60 0,05 0,035 —
02 Drawing 0,10 0,50 0,04 0,035 —
a
03 Deep drawing 0,08 0,45 0,03 0,03 —
a
04 Deep drawing aluminium killed 0,06 0,45 0,03 0,03 —
a
05 Extra-deep drawing stabilized 0,02 0,25 0,02 0,02 0,15
a
Interstitial free steel may be applied (see 5.4.3).
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ISO 5000:2019(E)

Table 2 — Limits on additional chemical elements
Mass fractions in percent
a a ab ab c c,d c
Cu Ni Cr Mo Nb V Ti
Element
max. max. max. max. max. max. max.
Heat analysis 0,20 0,20 0,15 0,06 0,008 0,008 0,008
Product analysis 0,23 0,23 0,19 0,07 0,018 0,018 0,018
a
The sum of copper, nickel, chromium and molybdenum shall not exceed 0,50 % on heat analysis. When one or more of
these elements are specified, the sum does not apply, in which case only the individual limits on the remaining elements apply.
b
The sum of chromium and molybdenum shall not exceed 0,16 % on heat analysis. When one or more of these elements
are specified, the sum does not apply, in which case, only the individual limits on the remaining elements apply.
c
For interstitial free steels only, the value of 0,15 % titanium, and 0,10 % maximum for niobium and vanadium are
acceptable to ensure that the carbon and nitrogen are fully stabilized.
d
Heat analysis greater than 0,008 % may be supplied after agreement between producer and purchaser.
Table 3 — Product analysis tolerances for Table 1
Mass fractions in percent
Element Maximum of specified element Tolerance over maximum specified
C 0,02 0,01
0,15 0,03
Mn 0,60 0,03
P 0,05 0,01
S 0,035 0,01
NOTE  The above maximum tolerance is the allowable excess over the requirement of heat analysis shown in Table 1.
5.4 Mechanical properties
5.4.1 Ordering conditions
Aluminium-silicon alloy-coated steel sheet of designations 02 and 03 are supplied under either of the
following two ordering conditions.
a) Ordering condition A: steel sheet mechanical properties shall, at the time the steel is made available
for shipment, satisfy the applicable requirements of Table 4, when they are determined on test
pieces obtained in accordance with the requirements in Clause 7. The values specified in Table 4 are
applicable for the periods indicated in Table 5 from the time that the steel is available for shipment.
b) Ordering condition B: steel sheet, ordered to make an identified part, shall be supplied with
a commitment for satisfactory manufacturing performance within an established breakage
allowance, which shall be previously agreed upon by the interested parties. In the agreement, the
part name, the details of fabrication, and special requirements (such as freedom from stretcher
strain or fluting) shall be specified.
In the case of ordering condition B, mechanical properties of the steel sheet may also be agreed upon
by the interested parties and such properties may not necessarily satisfy the requirements of Table 4.
5.4.2 Fabrication qualities
Aluminium-silicon alloy-coated steel sheets are available in several fabrication qualities: commercial,
drawing, deep drawing, deep drawing aluminium killed and extra-deep drawing stabilized.
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ISO 5000:2019(E)

5.4.3 Interstitial free steel
Stabilized interstitial free (IF) steel is applicable to orders for designations 03, 04 and 05; provided that
the purchaser is informed of the substitution and that related shipping documents reflect the actual
material shipped.
Table 4 — Mechanical properties
A
r n
R R
eL m
c
Base-metal quality min.
a b
max. max.
def def
min. min.
%
Designation Name MPa MPa L = 80 mm L = 50 mm
0 0
01 Commercial — — — — — —
02 Drawing 340 430 30 31 — —
03 Deep drawing 300 410 34 35 — —
Deep drawing aluminium
04 270 410 36 37 — —
killed
Extra-deep drawing stabi-
05 250 380 38 38 1,4 0,17
lized
R = lower yield strength
eL
R = tensile strength
m
A   = percentage elongation after fracture
L  = gauge length of original test piece
0
r  = index of drawability of the product
n  = index of stretchability of the product
2
1 MPa = 1 N/mm
NOTE 1  For products produced according to performance criteria (ordering condition B), the typical mechan-
ical properties presented here are non-mandatory. For products specified according to mechanical proper-
ties (ordering condition A), the purchaser may negotiate with the manufacturer if a specific range, or a more
restrictive range, is required for the application. When agreed to, such values may be specified.
NOTE 2  With the exception of footnote c and d; these typical mechanical properties apply to the full range of
steel sheet thicknesses. The yield strength tends to increase and some of the formability tends to decrease as
the sheet thickness decreases.
a
  The values apply to 0,2 % proof strength when a definite yield phenomenon is not present, otherwise to the
lower yield strength (R ).
eL
b
  The minimum tensile strength for qualities 02, 03 and 04 would normally be expected to be 270 MPa. For
design purposes, the lower limit for R may be assumed to be 140 MPa for grades 01, 02, 03, 04, and 120 MPa
eL
for grade 05. All tensile strength values are determined to the nearest 10 MPa.
c
  For materials of thickness up to and including 0,6 mm, the elongation percentages in this table shall be re-
duced by 2.
d
  r and n values are only applicable to thickness ≥0,5 mm. For thickness >2,0 mm, the r value is reduced by 0,2.
e
  r can also be written as r-bar and n can also be written as n-bar.
f  r
and n values may be modified or excluded from this specification, by agreement between the producer
and the purchaser.
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ISO 5000:2019(E)

Table 5 — Applicable period for values specified in Table 4
Designation Period
01 Not applicable
02 8 days
03 30 days
04 6 months
05 6 months
5.5 Coating
5.5.1 Silicon content
The aluminium-silicon alloy used for coating normally has between 5 % and 11 % silicon added to
promote better adherence and heat resistance.
5.5.2 Coating mass
The coating mass limits shall conform to the limits for the designations shown in Table 6. The coating
mass is the total amount of coating on both sides of the sheet, expressed in grams per square metre. The
interested parties shall agree upon the coating mass of differentially coated products. If a maximum
coating mass is required, the manufacturer shall be notified at the time of ordering.
5.5.3 Coating adherence
Aluminium-silicon alloy-coated steel sheet shall be capable of being bent in any direction, in accordance
with the mandrel diameter requirements of Table 7, without flaking of the coating on the outside of
the bend. Flaking of the coating within 7 mm from the edge of the test piece shall not be a cause for
rejection.
Table 6 — Coating mass (total both sides)
Minimum check limit
Triple-spot test Single-spot test
Coating mass designation
2 2
g/m g/m
AS040 40 30
AS060 60 45
AS080 80 60
AS100 100 75
AS120 120 90
AS150 150 115
AS200 200 150
AS300 300 240
NOTE 1  Because of the many variables and changing conditions that are characteristic of continuous aluminium-silicon
coating, the coating mass is not always evenly divided between the two surfaces of an aluminium-silicon-coated sheet;
neither is the aluminium-silicon coating evenly distributed from edge to edge. However, it can normally be expected that
not less than 40 % of the single-spot check limit will be found on either surface.
2
NOTE 2  The coating thickness can be estimated from the coating mass by using the following relationship: 100 g/m total
mass both sides ≅ 0,033 mm total thickness both sides.
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ISO 5000:2019(E)

Table 7 — Coating adherence — Bend test mandrel diameter
Base-metal quality Coated metal – 180° bend mandrel diameter, mm
Coating designation
e < 1,25 e ≥ 1,25
Designation Grade
AS200 AS200
Up to AS120 AS150 Up to AS120 AS150
AS300 AS300
01 Commerc
...

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