ISO 3575:2025

Continuous hot-dip zinc-coated and zinc-iron alloy-coated carbon steel sheet of commercial and drawing qualities

This document specifies the requirements for steel sheet, in coils and cut lengths, metallic-coated by the continuous hot-dip process, with zinc and zinc-iron alloy coatings. The product is intended for applications requiring corrosion resistance, formability and paintability. The steel sheet is produced in a number of designations, coating masses, surface treatments and coating conditions designed to be compatible with differing application requirements. This document does not cover steel designated as structural quality, which are covered in ISO 4998.[1]

Tôles en acier au carbone galvanisées en continu par immersion à chaud, de qualité commerciale et pour emboutissage

General Information

• Status: Published
• Publication Date: 31-Mar-2025
• ICS: 77.140.50 - Flat steel products and semi-products
• Technical Committee: ISO/TC 17/SC 12 - Continuous mill flat rolled products
• Drafting Committee: ISO/TC 17/SC 12 - Continuous mill flat rolled products
• Current Stage: 6060 - International Standard published
• Start Date: 01-Apr-2025
• Due Date: 01-Apr-2025
• Completion Date: 01-Apr-2025

Relations

• Revises: ISO 3575:2016 - Continuous hot-dip zinc-coated and zinc-iron alloy-coated carbon steel sheet of commercial and drawing qualities
• Effective Date: 18-Mar-2023

Standards Content (Sample)

International
Standard
ISO 3575
Sixth edition
Continuous hot-dip zinc-coated and
2025-04
zinc-iron alloy-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 2025
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Published in Switzerland
ii
Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Dimensions . 3
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 .5
5.4.3 Interstitial free steel .5
5.5 Coating .6
5.5.1 Coating mass .6
5.5.2 Coating adherence.7
5.6 Weldability .8
5.7 Painting .8
5.8 Surface treatment .8
5.8.1 Mill passivation .8
5.8.2 Mill phosphating .8
5.8.3 Oiling .9
5.9 Coated coil joining .9
5.10 Dimensional and shape tolerances .9
6 Sampling . 9
6.1 Tensile test .9
6.2 Coating tests .9
6.2.1 Coating mass .9
6.2.2 Triple-spot test .9
6.2.3 Single-spot test .9
6.2.4 Coating adherence.10
7 Test methods . 10
7.1 Tensile test .10
7.2 Coating properties.10
7.2.1 Coating mass .10
7.2.2 Coating adherence.10
8 Designation system . 10
8.1 General .10
8.2 Coating type .10
8.3 Coating mass .10
8.4 Coating finish condition .11
8.5 Surface treatment .11
8.6 Base-metal quality designation .11
8.7 Examples .11
9 Retests .12
9.1 Machining and flaws . . 12
9.2 Elongation . 12
9.3 Additional tests . 12
10 Resubmission.12

iii
11 Workmanship .13
12 Inspection and acceptance .13
13 Coil size .13
14 Marking . .13
15 Information to be supplied by the purchaser . 14
Annex A (normative) Orders requiring base-metal thickness .15
Bibliography . 17

iv
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (
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