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ISO 4967:2026 PDF — Steel — Determination of the non-metallic inclusion content — Microgr… — GOST Standards

//ISO 4967:2026

ISO 4967:2026

Name: ISO 4967:2026 — Steel — Determination of the non-metallic inclusion content — Micrographic method
SKU: ISO 4967:2026
Price: 25 EUR
Availability: InStock

Steel — Determination of the non-metallic inclusion content — Micrographic method

Название (английский):

ISO 4967:2026

Steel — Determination of the non-metallic inclusion content — Micrographic method

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 56
Дата публикации:: 29 мая 2026 г.
Издание:: ISO IS 4967 edition 4 version 1
ICS:: 77.040.99

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Full version25 €Ask AI2 €Read online 24h10 €Read online 72h15 €

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Цена:25 €

Описание (английский):

This document specifies a micrographic method of determining the non-metallic inclusions in rolled or forged steel products having a reduction ratio of at least 3 using the images of a standard reference chart or direct measurement by image analysis technologies. The standard reference chart described in this document is not entirely applicable for certain types of steel (e.g. free cutting steels).

Abstract

Overview

Key Topics

Scope of Application: The standard is designed for rolled or forged steel products, except specific types such as free cutting steels, for which the reference chart is not fully suitable.
Micrographic Method: Examination is carried out using microscopic analysis, either with direct optical comparison to standardized chart images or through validated image analysis software.
Inclusion Types and Rating: Inclusions are categorized into four main types (A, B, C, D) based on morphology and appearance, with an additional subgroup (DS) for oversized type D inclusions. These types are evaluated separately according to their size and distribution.
Sampling and Preparation: Requirements are provided for specimen size, sampling locations and methods for different steel product forms (bar, plate, tube), ensuring consistent assessment. Specimen preparation procedures focus on preserving inclusion integrity during sectioning and polishing.
Evaluation Methods: Two primary assessment methods are provided:
- Worst-field rating (Method A): Assigns the highest observed severity for each inclusion group across the specimen.
- Field frequency method (Method B): Examines multiple fields and classifies each according to inclusion content, allowing for statistical analysis.
Reporting & Reproducibility: The standard emphasizes clear rules for categorization and measurement, improving result reproducibility-particularly when using digital image analysis.
Legacy Compatibility: Recognizes previous approaches and allows their continued use, with an expectation of clear documentation when alternative methods or legacy definitions are applied.

Applications

Steel Quality Control: Ensuring the cleanliness of steel by quantifying non-metallic inclusions, which can impact mechanical properties and performance in critical applications.
Compliance in Supply Chains: Manufacturers, quality assurance teams, and steel purchasers utilize ISO 4967 to demonstrate compliance with global and contractual requirements.
Research and Development: Metallurgists and researchers assess process improvements or steel grades by comparing inclusion ratings.
Automated Image Analysis: The standard supports modernized analysis workflows using digital imaging, allowing for higher throughput and reduced subjective variability.
Product Specification and Certification: Steel producers rely on this method for product documentation, third-party validation, and meeting end-user specifications in industries such as automotive, construction, and energy.

Related Standards

ASTM E 45: Standard Test Methods for Determining the Inclusion Content of Steel - shares similarities but differs in certain definitions and rating systems.
ISO/IEC Terminology Standards: For terms and definitions referenced in ISO documentation.
Product-specific Steel Standards: These may reference ISO 4967 for non-metallic inclusion assessment as part of broader quality requirements.
ISO 14284: Steel and Iron - Sampling and Preparation of Samples for the Determination of Chemical Composition.

Keywords: ISO 4967:2026, steel, non-metallic inclusions, micrographic method, inclusion rating, steel quality control, image analysis, metallography, steel standards, inclusion content determination

Технические детали

Технический комитет: ISO/TC 17/SC 7 - Methods of testing (other than mechanical tests and chemical analysis)
SKU: ISO 4967:2026

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ISO 4967:2013

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Steel — Determination of content of non-metallic inclusions — Micrographic method using standard diagrams

Overview ISO 4967:2013 - Steel: Determination of content of non‑metallic inclusions - micrographic method using standard diagrams - defines a standardized metallographic procedure to assess non‑metal…

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ISO 4967:2026

Abstract

Overview

Похожие стандарты

Key Topics

Applications

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