ISO 3575:2005
(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 3575:2005 applies to carbon steel sheet of commercial and drawing qualities coated by the continuous hot-dip zinc-coating process.
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
Third edition
2005-05-15
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 3575:2005(E)
©
ISO 2005
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ISO 3575:2005(E)
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ii © ISO 2005 – All rights reserved
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ISO 3575:2005(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 third edition cancels and replaces the second edition (ISO 3575:1996), which has been technically
revised.
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INTERNATIONAL STANDARD ISO 3575:2005(E)
Continuous hot-dip zinc-coated carbon steel sheet
of commercial and drawing qualities
1 Scope
1.1 This International Standard applies to carbon steel sheet of commercial and drawing qualities coated by
the continuous hot-dip zinc-coating process.
1.2 Zinc-coated sheet is suitable for applications where resistance to corrosion is of prime importance.
1.3 The steel sheet is produced in a number of qualities, coating mass, surface treatments, and ordering
conditions.
1.4 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.
1.5 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 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.
1.6 Zinc and zinc-iron alloy coated steel sheet may 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.
1.7 Zinc-coated steel sheet is available in several fabrication qualities.
Commercial: intended for general fabrication purposes where sheet is used in the flat or for bending or
moderate forming.
Drawing: intended for fabricating parts where drawing or severe forming may be involved.
Deep drawing-aluminium killed (non-aging): intended for fabricating parts where particularly severe
drawing or forming may be involved or essential freedom form aging is required.
Extra deep drawing (stabilized interstitial free): intended for applications requiring interstitial free steel (IF)
which is non-aging and has maximum formability.
1.8 This International Standard does not cover steels designated as structural quality which are covered in
[1]
ISO 4998 .
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ISO 3575:2005(E)
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 1460:1992, Metallic coatings — Hot dip galvanized coatings on ferrous materials — Gravimetric
determination of the mass per unit area
ISO 2178:1982, Non-magnetic coatings on magnetic substrates — Measurement of coating thickness —
Magnetic method
ISO 3497:1990, Metallic coatings — Measurement of coating thickness — X-ray spectrometric methods
ISO 6892:1998, Metallic materials — Tensile testing at ambient temperature
ISO 7438:1985, Metallic materials — Bend test
ISO 16160:2000, Continuously hot-rolled steel sheet products — Dimensional and shape tolerances
ISO 16162:2000, Continuously cold-rolled steel sheet products — Dimensional and shape tolerances
ISO 16163:2000, 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.
3.1
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
3.2
breakage allowance
agreed upon level of acceptable die breakage not subject to claim
3.3
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.
3.4
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.
3.5
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
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ISO 3575:2005(E)
3.6
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.
3.7
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.
3.8
differential coating
coating having a coating mass on one surface significantly different from the coating mass on the other
surface
4 Requirements
4.1 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.
A verification analysis (product analysis) may be made by the purchaser to verify the specified analysis of the
semi-finished or finished steel and shall take into consideration any normal heterogeneity. Non-killed steels,
such as rimmed or capped, are not technologically suited for verification analysis. 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 steelmaking process being used.
On request, a report of the heat analysis shall be made to the purchaser.
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 0,05
02 Drawing 0,12 0,50 0,04 0,04
a
03 Deep drawing 0,10 0,45 0,03 0,03
Deep drawing
a
04 0,08 0,45 0,03 0,03
special killed
Extra deep
a
05 drawing 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.
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ISO 3575:2005(E)
Table 2 — Limits on additional chemical elements, %
a a a, b a, b 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
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 the 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 0,25 0,04
Mn 1,70 0,14
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.
4.2 Mechanical properties
Zinc-coated sheet of designations 01, 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.
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ISO 3575:2005(E)
Table 4 — Mechanical properties
R R
e m
A
b c
a
max. max.
Base-metal quality
d
min
2 e 2
N/mm N/mm
f
Designation Name L = 80 mm L = 50 mm L = 5,65√ S
o o o o
01 Commercial — — — —
g
02 Drawing 430 24 23 22
300
03 Deep drawing 260 410 26 25 24
Deep drawing
04 220 410 29 28 27
special killed
Extra deep drawing
05 200 350 37 36 35
stabilized
R = yield stress
e
R = tensile strength
m
A = percent elongation after fracture
L = gauge length on test piece
o
S = original cross-sectional area of gauge length
o
NOTE 1 Time period from date of shipment for values stated in this table to be applicable.
Designation Time period
01 —
02 8 days
03 1 month
04 6 months
05 6 months
NOTE 2 For products produced according to performance criteria 4.2, the typical mechanical properties presented here are
non-mandatory. For products specified according to mechanical properties, the purchaser may negotiate with the supplier if a specific
range, or a more restrictive range, is required for the application, therefore, by agreement, these values may be specified.
NOTE 3 These typical mechanical properties apply to the full range of steel sheet thicknesses. The yield tends to increase and some
of the formability aspects tend to decrease as the sheet thickness decreases.
a
All qualities are available with a minimized spangle zinc coating.
b
The yield values apply to 0,2 % proof stress if the yield point is not pronounced, otherwise to the lower yield point (R ).
eL
c 2
Minimum tensile strength for qualities 02, 03, 04 and 05 would normally be expected to be 270 N/mm . All tensile strength values
2
are determined to the nearest 10 N/mm .
d
For material up to and including 0,6 mm in thickness, the elongation values in the table shall be reduced by 2.
e 2
1 N/mm = 1 MPa.
f
May be used for material over 3 mm in thickness.
g
This value applies to skin-passed products only.
4.3 Coating
4.3.1 Coating mass
The coating mass limits shall conform to the limits for the designations shown in Table 5. The coating mass is
the total amount of coating on both sides of the sheet, expressed in grams per square metre. The coating
mass of differentially coated product shall be agreed upon by the interested parties. If a maximum coating
mass is required, the manufacturer shall be notified at the time of ordering.
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ISO 3575:2005(E)
Table 5 — Coating mass (total both sides)
Minimum check limit
Coating designation Triple-spot test Single-spot test
2 2
g/m (of sheet) g/m (of sheet)
a a
Z001
No minimum No minimum
Z100 100 85
Z180 180 150
Z200 200 170
Z275 275 235
Z350 350 300
Z450 450 385
Z600 600 510
Z700 700 595
ZF001 No minimum No minimum
ZF100 100 85
ZF180 180 150
Because of the many variables and changing cond
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