ISO 15177:2012
(Main)Hot-rolled twin-roll cast carbon steel sheet of commercial quality
Hot-rolled twin-roll cast carbon steel sheet of commercial quality
This International Standard specifies the characteristics of hot-rolled twin-roll cast carbon steel sheet of commercial quality produced by the twin-roll cast process. Hot-rolled twin-roll cast steel sheet is suitable for many applications where the presence of oxide or scale or normal surface imperfections disclosed after removal of oxide or scale, are not objectionable. It is not suitable for applications where the surface is of prime importance. NOTE A steel sheet that is subjected to subsequent re-rolling is not covered by this International Standard. Commercial quality twin-roll cast steel sheet is intended for general fabrication purposes where sheet is used in the flat condition or for bending, moderate forming and welding operations
Tôles en acier de qualité commerciale laminées à chaud par coulée entre cylindres
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 15177
First edition
2012-03-15
Hot-rolled twin-roll cast carbon steel
sheet of commercial quality
Tôles en acier de qualité commerciale laminées à chaud par coulée
entre cylindres
Reference number
ISO 15177:2012(E)
©
ISO 2012
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ISO 15177:2012(E)
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© ISO 2012
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ii © ISO 2012 – All rights reserved
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ISO 15177:2012(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Thickness . 2
5 Other information . 2
6 Surface characteristics . 2
6.1 Surface condition . 2
6.2 Skin passing . 2
6.3 Oiling . 2
7 Conditions of manufacture . 3
7.1 Steelmaking . 3
7.2 Chemical composition . 3
7.3 Chemical analysis . 3
7.4 Weldability . 4
7.5 Application . 4
7.6 Mechanical properties . 4
8 Dimensional tolerances . 4
9 Tensile test sampling . 5
10 Tensile test . 5
11 Retests . 5
11.1 Machining and flaws . 5
11.2 Elongation . 5
11.3 Additional tests . 5
12 Resubmission . 5
13 Workmanship . 5
14 Inspection and acceptance . 5
15 Coil size . 6
16 Marking . 6
17 Information to be supplied by the purchaser . 6
Bibliography . 8
© ISO 2012 – All rights reserved iii
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ISO 15177:2012(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 15177 was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 12, Continuous mill flat
rolled products.
iv © ISO 2012 – All rights reserved
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INTERNATIONAL STANDARD ISO 15177:2012(E)
Hot-rolled twin-roll cast carbon steel sheet of commercial quality
1 Scope
This International Standard specifies the characteristics of hot-rolled twin-roll cast carbon steel sheet of
commercial quality produced by the twin-roll cast process. Hot-rolled twin-roll cast steel sheet is suitable for
many applications where the presence of oxide or scale or normal surface imperfections disclosed after removal
of oxide or scale, are not objectionable. It is not suitable for applications where the surface is of prime importance.
NOTE A steel sheet that is subjected to subsequent re-rolling is not covered by this International Standard.
Commercial quality twin-roll cast steel sheet is intended for general fabrication purposes where sheet is used
in the flat condition or for bending, moderate forming and welding operations.
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 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
ISO 16160, Hot-rolled 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
hot-rolled descaled steel sheet
hot-rolled steel sheet from which oxide or scale has been removed, commonly by pickling in an acid solution or
by appropriate mechanical means such as grit blasting
NOTE Some changes in properties can result from descaling.
3.2
skin pass
light cold rolling of hot-rolled steel sheet or hot-rolled descaled steel sheet
3.3
mill edge
normal side edge without any definite contour produced in hot rolling
NOTE Mill edges may contain some irregularities, such as cracked or torn edges or thin (feathered) edges.
3.4
sheared edge
normal edge obtained by shearing, slitting or trimming a mill edge product
NOTE Normal processing does not necessarily provide a definite positioning of the slitting.
3.5
twin-roll cast steel sheet
steel sheet produced by casting to near final thickness directly from the liquid metal with minimal hot rolling to
achieve the final thickness
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ISO 15177:2012(E)
3.6
breakage allowance
agreed-upon level of acceptable breakage not subject to claim
4 Thickness
4.1 Hot-rolled twin-roll cast sheet of commercial quality sheet is produced in thicknesses of 0,7 mm to 2,0 mm,
inclusive, and in widths of up to 2 000 mm in coils and cut lengths.
4.2 Hot-rolled twin-roll cast sheets less than 600 mm wide may be slit from wide sheets and may be
considered sheets.
5 Other information
5.1 Some increase in hardness and some loss of ductility may result from descaling if mechanical means,
such as grit blasting are used.
5.2 The purchaser should state whether descaling is required.
6 Surface characteristics
6.1 Surface condition
The sheets shall not have slivers, seams, cracks or scratches, which can adversely affect their use. Also, oxide
or scale on hot-rolled steel sheet is subject to variations in thickness, adherence and colour. Removal of the
oxide or scale by pickling or blast cleaning can disclose surface imperfections not readily visible prior to this
operation. Furthermore, after drawing, imperfections, which were not apparent in the flat sheet, can be visible.
Pores, small pits, small marks, scratches, kinks from pay-off reels and slight coloration are permitted. Defects
shall not be of such an extent that they run the risk of causing failure or damage to tooling or of creating welding
difficulties.
In the case of delivery of coil and slit coil, the percen
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