GB/T 10561-2005: Steel -- Determination of content of nonmetallic inclusions -- Micrographic method using standards diagrams

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Scope

This Standard specifies a micrographic method of determining the nonmetallic
inclusions in rolled or forged steel products having a reduction ratio of at least 3 using
standard diagrams. This method is widely used to assess the suitability of a steel for a
given use. However, since it is difficult to achieve reproducible results owing to the
influence of the test operator, even with a large number of specimens, precautions
should be taken when using the method.
NOTE. For certain types of steel (e.g., free cutting steels), the standardized diagrams described
in this Standard may not be applicable.
This Standard also provides for the determination of nonmetallic inclusions by image
analysis technologies (see Annex D).

Basic Data

Standard ID	GB/T 10561-2005 (GB/T10561-2005)
Description (Translated English)	Steel. Determination of content of nonmetallic inclusions. Micrographic method using standards diagrams
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	H24
Classification of International Standard	77.040.30
Word Count Estimation	38,359
Date of Issue	2005-05-13
Date of Implementation	2005-10-01
Older Standard (superseded by this standard)	GB/T 10561-1989
Adopted Standard	ISO 4967-1998; IDT
Regulation (derived from)	Announcement of Newly Approved National Standards No. 7, 2005 (No. 81 overall)
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China, China National Standardization Administration Committee
Summary	This standard specifies: Atlas assessed using standard compression ratio is greater than or equal to 3 rolled or forged in steel non-metallic inclusions Micrographic method.