GB/T 5612-2025Designation of cast irons (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting is required.

This document replaces GB/T 5612-2008 "Methods for indicating cast iron grades". Compared with GB/T 5612-2008, except for structural adjustments and In addition to logical changes, the main technical changes are as follows.

a) Added cast iron classification (see 4.1);

b) The cast iron code description has been changed (see 4.2, 3.1 of the 2008 edition);

c) Added the method of indicating cast iron grades (see Chapter 5, 3.2 and 3.3 of the 2008 edition).

Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.

This document is proposed and coordinated by the National Technical Committee on Foundry Standardization (SAC/TC 54).

This document was drafted by: China Machinery Engineering Institute Group Shenyang Foundry Research Institute Co., Ltd., CRRC Qishuyan Locomotive and Rolling Stock Technology Research Institute Co., Ltd., Zhejiang Boxing Industry and Trade Co., Ltd., Wuhu Xinxing Casting Pipe Co., Ltd., East Asia Technology (Suzhou) Co., Ltd., Guangxi Yuchai Crankshaft Co., Ltd., Shandong Tianli Machinery Casting Co., Ltd., Hangzhou Hangyang Casting Co., Ltd., Weichai Power Co., Ltd., Shandong Huijin Co., Ltd., Shandong Jinlei New Energy Heavy Equipment Co., Ltd., Riyue Heavy Industry Co., Ltd., Tongyu Heavy Industry Co., Ltd.

Co., Ltd., Jinan University, Hohai University, Shandong University of Technology, Zhejiang Mechanical and Electrical Vocational and Technical University, Tongling University, Jiangsu Hongde Special Components Co., Ltd.

Co., Ltd., Hubei Sanhuan Casting Co., Ltd., Tianrun Industrial Technology Co., Ltd., Xinxing Casting Pipe Co., Ltd., Ningbo Yier Da Hardware Industry and Trade Co., Ltd., Hebei Juxing Intelligent Equipment Manufacturing Co., Ltd., Linqing Jinguang Machinery Manufacturing Co., Ltd., Jiangsu Kate Automobile Components Co., Ltd. and Wuhu Emerging New Materials Industrial Park Co., Ltd.

The main drafters of this document are: Zhang Yin, Deng Han, Wu Qihua, Li Wei, Jin Li, Chen Kaimin, Cong Jianchen, Wang Zehua, Chen Jianhua, Qian Dongfang, Zhang Jie, Yu Xuru, Zhou Kangkang, Zhang Xin, Yu Jianjun, Chen Yongfeng, Wu Baocheng, Yang Zhisen, Chu Dong, Li Chaogui, Zhou Jianjun, Tang Guangwei, Xu Gangqiang, Xie Laiwang, Wang Songlin, Xie Xun, Jiao Honglei, Li Yongliang, Kong Xiangjian, Liu Hongfei, Zhang Yajun, Li Nana, Wei Zhangan.

This document was first published in 1985, revised for the first time in 2008, and this is the second revision.

Cast iron grade indication method

1 Scope

This document gives the classification of cast irons and the designation of cast iron grades.

This document is applicable to various cast iron materials and castings.

2 Normative references

This document has no normative references.

3 Terms and definitions

There are no terms or definitions that require definition in this document.

4 Cast iron classification and code

5 Cast iron grade indication method