ISO 19203:2018

INTERNATIONAL ISO
STANDARD 19203
First edition
2018-05
Hot-dip galvanized and zinc-
aluminium coated high tensile
steel wire for bridge cables —
Specifications
Fils d’acier à haut carbone galvanisés ou revêtus de zinc-aluminium
pour câbles de ponts — Spécifications
Reference number
©
ISO 2018
© ISO 2018
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ii © ISO 2018 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 3
5 Designation of the product . 3
6 Information needed by the manufacturer . 4
7 Requirements . 4
7.1 Materials and manufacture . 4
7.2 Standard properties . 4
7.2.1 Geometrical properties . 4
7.2.2 Straightness . 5
7.2.3 Mechanical and coating properties . 5
7.2.4 Appearance . 6
7.3 Special properties . 6
7.4 Traceability . 6
8 Inspection . 7
8.1 Inspection and inspection documents . 7
8.2 Number of samples and test pieces . 7
8.3 Evaluation of test results . 7
8.4 Sorting and reprocessing . 8
9 Test methods . 8
9.1 Testing of standard properties . 8
9.1.1 Measurement of geometrical characteristics . 8
9.1.2 Tensile test . 8
9.1.3 Elasticity modulus test . 8
9.1.4 Torsion test . 8
9.1.5 Ductility wrapping test . 8
9.1.6 Mass of coating . 8
9.1.7 Adhesive of coating . 9
9.1.8 Surface quality . 9
9.2 Testing of special properties . 9
9.2.1 Uniformity of zinc or zinc-aluminium coating (dipping test) . 9
9.2.2 Corrosion resistance test . 9
9.2.3 Axial force fatigue test . 9
9.2.4 Isothermal stress relaxation test . 9
10 Delivery conditions . 9
10.1 Identification . 9
10.2 Coil dimensions . 9
10.3 Coil weight .10
10.4 Transport and storage .10
Annex A (normative) Additional test methods — Axial force fatigue test .11
Annex B (normative) Additional test methods — Isothermal stress relaxation test .12
Annex C (informative) Calculation of the density of steel wire and diameter of bare steel wire .13
Foreword
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bodies (ISO member bodies). The work of preparing International Standards is normally carried out
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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
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URL: www .iso .org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 17, Steel wire
rod and wire products.
iv © ISO 2018 – All rights reserved

INTERNATIONAL STANDARD ISO 19203:2018(E)
Hot-dip galvanized and zinc-aluminium coated high tensile
steel wire for bridge cables — Specifications
1 Scope
This document specifies the requirements for hot-dip galvanized (hereinafter referred to as zinc
coated) and zinc-aluminium coated high tensile wires, which are widely used in parallel wire cables or
semi-parallel wire cables for suspension bridges, stay bridges and other structures involving the use of
parallel wires.
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 752:2004, Zinc ingots
ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
ISO 7800, Metallic materials — Wire — Simple torsion test
ISO 7802, Metallic materials — Wire — Wrapping test
ISO 7989-2, Steel wire and wire products — Non-ferrous metallic coatings on steel wire — Part 2: Zinc or
zinc-alloy coating
ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests
ISO 10474:2013, Steel and steel products — Inspection documents
ISO 15630-3:2010, Steel for the reinforcement and prestressing of concrete — Test methods — Part 3:
Prestressing steel
ISO 16120-1, Non-alloy steel wire rod for conversion to wire — Part 1: General requirements
ISO 16120-4, Non-alloy steel wire rod for conversion to wire — Part 4: Specific requirements for wire rod
for special applications
ISO 22034-2, Steel wire and wire products — Part 2: Tolerances on wire dimensions
ASTM B 997, Standard specification for Zinc-Aluminum alloy in ingot form for hot-dip coatings
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:
— IEC Electropedia: available at https: //www .electropedia .org/
— ISO Online browsing platform: available at https: //www .iso .org/obp
3.1
wire rod
hot rolled steel delivered in coils, used for cold working treatments such as wire drawing
3.2
bare steel wire
product manufactured by cold working wire rod (3.1) that is in a suitable metallurgical condition for
cold working
3.3
hot-dip zinc coated steel wire
hot-dip galvanized coated steel wire
steel wire that is coated with zinc in a bath of molten zinc
3.4
zinc-aluminium coated steel wire
steel wire that is coated with zinc-aluminium alloy in a bath of molten zinc-aluminium alloy
Note 1 to entry: In this document, “steel wire” or “wire” refers to zinc or zinc-aluminium coated steel wire, unless
otherwise specified.
3.5
stabilized wire
steel wire that is given a final thermo-mechanical treatment
3.6
out-of-round
arithmetic difference between the maximum and minimum diameters of the steel wire at the same
cross section
3.7
semi-parallel wire cable
specified number of steel wires bundled together with a maximum lay angle of 4°
Note 1 to entry: Semi-parallel wire cables are usually used for cable stayed bridge
...