ISO 3575:2011
(Main)Continuous hot-dip zinc-coated carbon steel sheet of commercial and drawing qualities
Continuous hot-dip zinc-coated carbon steel sheet of commercial and drawing qualities
ISO 3575:2011 applies to carbon steel sheet of commercial and drawing qualities coated by the continuous hot‑dip zinc‑coating process. Zinc‑coated sheet is suitable for applications where resistance to corrosion is of prime importance. The steel sheet is produced in a number of qualities, coating mass, surface treatments and ordering conditions. Zinc- and zinc‑iron-alloy-coated steel sheet can be ordered in one of two ordering conditions. Condition A): steel ordered to satisfy mechanical property requirements. Condition B): steel ordered to make an identified part. ISO 3575:2011 does not cover steels designated as structural quality, which are covered in ISO 4998.
Tôles en acier au carbone galvanisées en continu par immersion à chaud, de qualité commerciale et pour emboutissage
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 3575
Fourth edition
2011-01-15
Continuous hot-dip zinc-coated carbon
steel sheet of commercial and drawing
qualities
Tôles en acier au carbone galvanisées en continu par immersion à
chaud, de qualité commerciale et pour emboutissage
Reference number
ISO 3575:2011(E)
©
ISO 2011
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ISO 3575:2011(E)
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ii © ISO 2011 – All rights reserved
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ISO 3575:2011(E)
Contents Page
Foreword .iv
1 Scope.1
2 Normative references.1
3 Terms and definitions .2
4 Thickness .3
5 Conditions of manufacture.3
5.1 Chemical composition .3
5.2 Mechanical properties.5
5.3 Coating .6
5.4 Fabrication qualities.7
5.5 Weldability.7
5.6 Painting.7
5.7 Surface treatment.8
5.8 Coated coil joining .8
5.9 Dimensional and shape tolerances .8
6 Sampling .8
6.1 Chemical composition .8
6.2 Tensile test.8
6.3 Coating tests.8
6.4 Coating adherence .9
6.5 Retest.9
7 Test methods .9
7.1 Tensile test.9
7.2 Coating properties.9
8 Designation system.10
8.1 Coating name.10
8.2 Coating mass .10
8.3 Coating finish type .10
8.4 Surface treatments.10
8.5 Base-metal designations .10
8.6 Examples.11
9 Resubmission .11
10 Workmanship.11
11 Inspection and acceptance.12
12 Marking.12
13 Information to be supplied by the purchaser .12
Annex A (normative) Orders requiring base-metal thickness.14
Bibliography.15
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ISO 3575:2011(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 3575 was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 12, Continuous mill flat
rolled products.
This fourth edition cancels and replaces the third edition (ISO 3575:2005), which has been technically revised.
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INTERNATIONAL STANDARD ISO 3575:2011(E)
Continuous hot-dip zinc-coated carbon steel sheet of
commercial and drawing qualities
1 Scope
This International Standard applies to carbon steel sheet of commercial and drawing qualities coated by the
continuous hot-dip zinc-coating process.
Zinc-coated sheet is suitable for applications where resistance to corrosion is of prime importance.
The steel sheet is produced in a number of qualities, coating mass, surface treatments and ordering
conditions.
Zinc- and zinc-iron-alloy-coated steel sheet can be ordered in one of two ordering conditions.
a) Condition A): steel ordered to satisfy mechanical property requirements.
b) Condition B): steel ordered to make an identified part.
This International Standard does not cover steels designated as structural quality, which are covered in
[1]
ISO 4998 .
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.
ISO 1460, Metallic coatings — Hot dip galvanized coatings on ferrous materials — Gravimetric determination
of the mass per unit area
ISO 2178, Non-magnetic coatings on magnetic substrates — Measurement of coating thickness — Magnetic
method
ISO 3497, Metallic coatings — Measurement of coating thickness — X-ray spectrometric methods
ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
ISO 7438, Metallic materials — Bend test
ISO 16163:2010, Continuously hot-dipped coated steel sheet products — Dimensional and shape tolerances
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ISO 3575:2011(E)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 Quality applications
3.1.1
commercial
intended for general fabricating purposes where sheet is used in the flat condition, or for bending or moderate
forming
3.1.2
drawing
intended for parts where drawing or severe forming may be involved
3.1.3
deep drawing
intended for parts where severe forming or severe drawing may be involved
3.1.4
deep drawing-aluminum killed (non-aging)
intended for fabricating parts where particularly severe drawing or forming may be involved or essential
freedom from aging is required
3.1.5
extra-deep drawing (stabilized)
intended for applications requiring interstitial free steel (IF) which is non-aging and has maximum formability
3.2
aluminum killed
steel which has been deoxidized with aluminum that is sufficient to prevent the evolution of gas during
solidification
3.3
stabilized interstitial free steel
extra-low-carbon steel in which all interstitial elements are combined with titanium and/or equivalent elements
NOTE Stabilized steel is sometimes referred to as interstitial free steel.
3.4
continuous hot-dip zinc-coated steel sheet
product obtained by hot-dip zinc coating cold-reduced sheet coils or hot-rolled descaled sheet coils on a
continuous zinc-coating line to produce either zinc-coated coils or zinc-coated cut lengths
3.5
breakage allowance
agreed upon level of acceptable die breakage not subject to claim
3.6
normal spangle
coating formed as a result of unrestricted growth of zinc crystals during normal solidification
NOTE This coating has a metallic lustre and is the type normally furnished for a wide variety of applications. It may
be furnished S (normal coating, with skin pass) or N (normal coating, as coated); however, it may be variable in
appearance and not suitable for decorative painting.
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ISO 3575:2011(E)
3.7
minimized spangle
coating obtained by restricting normal spangle formation during the solidification of the zinc
NOTE This product may have some lack of uniformity in surface appearance within a coil or from coil to coil.
3.8
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
3.9
zinc-iron alloy coating
coating produced by processing the zinc-coated steel sheet so that the coating formed on the base metal is
composed of zinc-iron alloys
NOTE This product, designated ZF is not spangled, is normally dull in appearance and, for some applications, may
be suitable for immediate painting without further treatment, except normal cleaning. Zinc-iron alloy coatings may powder
during severe forming.
3.10
skin pass
light cold-rolling of the zinc-coated steel sheet
NOTE The purpose of the skin pass is to produce a higher degree of surface smoothness and thereby improve the
surface appearance. The skin pass also temporarily minimizes the occurrence of a surface condition known as stretcher
strain (Luder's Lines) or fluting during the fabrication of finished parts. The skin pass also controls and improves flatness.
Some increase in hardness and loss of ductility will result from skin passing.
3.11
differential coating
coating having a coating mass on one surface significantly different from the coating mass on the other
surface
3.12
lot
50 t or less of steel sheet of the same grade rolled to the same thickness
4 Thickness
4.1 Zinc-coated sheet is produced in thicknesses from 0,25 mm to 5 mm inclusive after coating, and in
widths of 600 mm and over in coils and cut lengths. Zinc-coated sheet less than 600 mm wide, slit from wide
sheet, will be considered as sheet.
4.2 The thickness of hot-dip zinc-coated and zinc-iron alloy sheet steel may be specified as a combination
of the base metal and metallic coating, or as the 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 of the base metal alone.
5 Conditions of manufacture
5.1 Chemical composition
The chemical composition (heat analysis) shall not exceed the values given in Tables 1 and 2. On request, a
report of the heat analysis shall be made to the purchaser.
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ISO 3575:2011(E)
A verification analysis may be made by the purchaser to verify the specified analysis of the product and shall
take into consideration any normal heterogeneity. Non-killed steels (such as rimmed or capped steels) are not
technologically suited to product analysis. For killed steels, the sampling method and deviation limits shall be
agreed upon between the interested parties at the time of ordering. The product analysis tolerances are
shown in Table 3.
The processes used in making the steel and in manufacturing zinc-coated sheet are left to the discretion of
the manufacturer. When requested, the purchaser shall be informed of the steel-making process used.
Table 1 — Chemical composition (heat analysis), %
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
Deep drawing
a
04 0,06 0,45 0,03 0,03
aluminum killed
Extra deep drawing
a
05 0,02 0,25 0,02 0,02 0,15
stabilized
a
For interstitial free steels only, the values of 0,15 % titanium, and 0,10 % maximum for niobium and vanadium are acceptable to
ensure that the carbon and nitrogen are fully stabilized.
Table 2 — Limits on additional chemical elements, %
a a ab ab c cd 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
NOTE Each of the elements listed in this table 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 %.
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 the producer and purchaser.
Table 3 — Product analysis tolerances, %
Element Maximum of specified element Tolerance over maximum specified
C 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 specified requirement and not the heat analysis.
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ISO 3575:2011(E)
5.2 Mechanical properties
Zinc-coated sheet of designations 02, 03, 04 and 05 are supplied under the following two ordering conditions:
a) Ordering condition A). Steel when ordered to mechanical properties shall, at the time the steel is made
available for shipment, satisfy the applicable requirements of Table 4.
b) Ordering condition B). Steel when ordered to make an identified part shall be supplied with a commitment
for satisfactory manufacturing performance within a proper breakage allowance, which shall be previously
agreed upon by the interested parties. In these cases, the part name, the details of fabrication, and
special requirements (such as freedom from stretcher strain or fluting) shall be specified.
NOTE Prolonged storage of the sheet can cause a change in mechanical properties (increase in hardness and
decrease in elongation), leading to a decrease in drawability. To minimize this effect, quality 03, 04 and 05 should be
specified.
Table 4 — Mechanical properties
R
R m e,f,g e,f,g
e
r n
c A
a b
max.
Base-metal quality max.
d
min.
h min. min.
MPa
MPa
i
Designation Name L = 80 mm L = 50 mm L = 5,65√ S
o o o o
01 Commercial — — — — — — —
j
02 Drawing 300 430 24 23 22 — —
03 Deep drawing 260 410 26 25 24 — —
Deep drawing
04 220 410 29 28 27 — —
aluminum killed
Extra deep
05 200 350 37 36 35 1,4 0,17
drawing stabilized
R = yield stress
e
R = tensile strength
m
A = percent elongation after fracture
L = gauge length on test piece
o
S = original cross-
...
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