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JB/T 7378-2010Sintered iron-based products - Metallographic determination of carbonitrided case depth (English PDF)

烧结铁基制品碳氮共渗层深度的金相法测定

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Issued by

MIIT

Level / Type

Industry · Recommended

Issue date

February 11, 2010

Implementation date

July 1, 2010

Scope

JB/T 7378-2010 is the English-translated version of 烧结铁基制品碳氮共渗层深度的金相法测定.

JB/T 7378-2010 is a recommended Chinese machinery industry standard, classified H72 in the Chinese scheme and 77.160 in the international one, which sets out a metallographic method for measuring case depth.

The method is an optical one and the quantity it determines is the depth of the carbonitrided case of sintered iron-based products. Its field of application is stated as the determination of the depth of the carbon and nitrogen infiltrated layer in sintered iron-based products.

The Ministry of Industry and Information Technology issued the document, and it takes the place of the earlier edition JB/T 7378-1994. It quotes GB/T 5163 and JB/T 5069.

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Document preview — JB/T 7378-2010

National Standard of the People's Republic of China

ICS: 77.160
Replacing: JB/T 7378-1994

Issued by: Ministry of Industry and Information Technology of the People's Republic of China

1 Scope
2 Normative references

1 Foreword

JB/T 7378-2010 was issued by MIIT on 11 February 2010 and has been in force since 1 July 2010.

It replaces the earlier edition JB/T 7378-1994.

2 Scope

This standard is a recommended Chinese machinery industry standard, classified H72 in the Chinese scheme and 77.160 in the international one, which sets out a metallographic method for measuring case depth. The method is an optical one and the quantity it determines is the depth of the carbonitrided case of sintered iron-based products. Its field of application is stated as the determination of the depth of the carbon and nitrogen infiltrated layer in sintered iron-based products. The Ministry of Industry and Information Technology issued the document, and it takes the place of the earlier edition JB/T 7378-1994. It quotes GB/T 5163 and JB/T 5069.

3 Normative references

JB/T 7378-2010 cites the following standards, which apply in full or in part through the references made to them in its clauses.

GB/T 5163

JB/T 5069

4 About this standard

Issued by: MIIT

English translation: about 15 pages

5 Related standards

Other editions:

JB/T 7378-1994 (earlier edition)

6 Classification and status

International classification (ICS): 77.160

Prefix JB/T: recommended standard.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

Similar standards

QC/T 29018-1991|JB/T 9137-2015|GB/T 11354-2025|JB/T 8063.1-2011|JB/T 8063.2-2011|JB/T 8063.3-2011

Editions of JB/T 7378

Edition	Title	Revision	Status
JB/T 7378-2010	Sintered iron-based products - Metallographic determination of carbonitrided case depth	current edition	Current
JB/T 7378-1994	Sintered iron-based products - Metallographic determination of carbonitrided case depth	previous edition	Superseded

This page sells the current edition, JB/T 7378-2010. Earlier editions are listed for reference only.

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