Standard No.:	TB/T 2451-1993
English Name:	Metallographic Inspection for Non-metallic Inclusion in Cast Steel
Chinese Name:	铸钢中非金属夹杂物金相检验
Chinese Classification:	H24    Metallographic testing method
Professional Classification:	TB    Professional Standard - Railway Transport
Source Content Issued by:	Ministry of Railways
Issued on:	1993-11-11
Implemented on:	1994-7-1
Status:	superseded
Superseded by:	TB/T 2942.1-2020 Steel castings for rolling stock-Part 1:Technical requirements and inspection
Superseded on:	2020-12-1
Target Language:	English
File Format:	PDF
Word Count:	6000 words
Translation Price(USD):	180.0
Delivery:	via email in 1 business day

1 Subject Content and Scope of Application This standard specifies the technical requirements, test items, grading diagrams, test methods and test rules of metallographic test for nonmetallic inclusions in cast steel. This standard is generally applicable to the metallographic test for nonmetallic inclusions in cast carbon steel and cast low-alloy steel for general engineering purposes. 2 Normative References GB 10561 Steel — Determination of Content of Non-metallic Inclusion — Micrographic Method Using Standard Diagrams 3 Technical Requirements If the requirements of nonmetallic inclusions are specified in product drawing or technical conditions, they shall comply with the requirements of Table 1.

1 Subject Content and Scope of Application 2 Normative References 3 Technical Requirements 4 Test Sample and Test Method 5 Test Rules 6 Test Items and Grading Diagrams Additional Explanations