ISO 4998:2023 PDF

Name: ISO 4998:2023 — Steel sheet, zinc‐coated and zinc‐iron alloy‐coated by the continuous hot‐dip process, of structural quality
SKU: ISO 4998:2023
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Steel sheet, zinc‐coated and zinc‐iron alloy‐coated by the continuous hot‐dip process, of structural quality

Название (английский):

ISO 4998:2023

Steel sheet, zinc‐coated and zinc‐iron alloy‐coated by the continuous hot‐dip process, of structural quality

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 14
Дата публикации:: 15 февраля 2023 г.
Издание:: ISO IS 4998 edition 7 version 1
ICS:: 77.140.50

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Описание (английский):

This document specifies the requirements for steel sheet, zinc-coated and zinc-iron alloy-coated by the continuous hot-dip process, of structural quality. The product is intended for applications where resistance to corrosion is of prime importance. The steel sheet is produced in a number of grades, coating masses, ordering conditions, and surface treatments. This document does not cover steel sheet designated as commercial quality, or drawing quality, which are covered in ISO 3575.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 4998:2023 specifies requirements for steel sheet, zinc‑coated and zinc‑iron alloy‑coated by the continuous hot‑dip process, of structural quality. Intended for applications where corrosion resistance is a primary concern, the standard covers product grades, coating types (zinc and zinc‑iron), coating masses, surface finishes, surface treatments, mechanical requirements and inspection/acceptance criteria. This seventh edition (2023) updates terms and adds coating‑mass designations.

Keywords: ISO 4998:2023, zinc‑coated steel sheet, zinc‑iron alloy‑coated, continuous hot‑dip, structural quality, corrosion resistance.

Key topics and technical requirements

Scope and product definition: Applies to structural‑quality hot‑dip zinc (Zn) and zinc‑iron (ZF) alloy coatings; excludes commercial or drawing quality (see ISO 3575).

Dimensions and formats: Product thickness after coating typically ranges from 0.25 mm to 5 mm; produced in coils and cut lengths (widths ≥ 600 mm considered coils).

Steelmaking and chemical composition: Requirements for base‑metal chemistry and methods for heat and product analysis are specified.

Mechanical properties: Tensile properties, elongation and bend‑test requirements are included; tensile testing references ISO 6892‑1.

Coating specifications:

Coating mass defined and expressed in g/m2 (total both sides).
Coating types and finishes (normal coating, minimized spangle, zinc‑iron alloy) and coating adherence tests.
Differential coating (different masses on each face) permitted where specified.

Surface treatment and finishing: Mill passivation, mill phosphating, oiling, and skin‑pass rolling (to control surface and shape) are addressed.

Weldability, painting and workmanship: Guidance for suitability for welding and painting; paintability of ZF (zinc‑iron) coatings noted.

Sampling, testing and inspection: Sampling plans and specific tests for coating mass (ISO 1460), coating thickness (ISO 2178 / ISO 3497), bend tests (ISO 7438), and dimensional/shape tolerances (ISO 16163).

Designation, marking and purchaser information: Standardized designation system, coil size, marking and order information requirements.

Applications and users

Typical applications: structural components, building envelopes, roofing, cladding, infrastructure and any application needing durable corrosion protection.

Who uses it: steel producers, galvanizers, fabricators, architects, structural engineers, procurement/specification writers, coating and corrosion engineers, and regulatory bodies.

Related standards

ISO 3575 (commercial/drawing quality steel sheet)

Test and measurement standards referenced: ISO 1460, ISO 2178, ISO 3497, ISO 6892‑1, ISO 7438, ISO 16163.

Use ISO 4998:2023 when specifying hot‑dip zinc or zinc‑iron coated structural steel sheet to ensure consistent corrosion performance, defined mechanical properties and clear interchangeability between suppliers.

ISO 4998:2023 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and users

Related standards

Технические детали

ISO 3575:2011

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

SIST EN ISO 6892-1:2020

Metallic materials - Tensile testing - Part 1: Method of test at room temperature (ISO 6892-1:2019)

BS EN ISO 14602:2011

Non-active surgical implants. Implants for osteosynthesis. Particular requirements.

ISO 21787:2006/Amd 1:2019

Industrial valves — Globe valves of thermoplastics materials — Amendment 1

SIST EN ISO 3497:2002

Metallic coatings - Measurement of coating thickness - X-ray spectrometric methods (ISO 3497:2000)

SIST EN ISO 7438:2021

Metallic materials - Bend test (ISO 7438:2020)

BS ISO 16163:2012

Continuously hot-dipped coated steel sheet products. Dimensional and shape tolerances.