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ISO 5490:2025

Steel — Rating and classifying nonmetallic inclusions using the scanning electron microscope

Publication date:   Sep 26, 2025

General information

60.60   Standard published   Sep 26, 2025

ISO

ISO/TC 17/SC 7 Methods of testing (other than mechanical tests and chemical analysis)

International Standard

77.080.20   Steels

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Scope

This document specifies procedures for the rating and statistical analysis of non-metallic inclusions (referred to as inclusions hereafter) using a scanning electron microscope (SEM) with an energy dispersive X-ray spectrometer (EDS), a backscattered detector (BSD) and automatic image analysis capabilities.

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PUBLISHED
ISO 5490:2025
60.60 Standard published
Sep 26, 2025