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GB/T 26649-2025: Magnesium alloy castings for automobile wheels
Status: Valid GB/T 26649: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 26649-2025 | English | 279 |
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Magnesium alloy castings for automobile wheels
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GB/T 26649-2025
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| GB/T 26649-2011 | English | 90 |
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Magnesium alloy castings for automobile wheels
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GB/T 26649-2011
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Basic data | Standard ID | GB/T 26649-2025 (GB/T26649-2025) | | Description (Translated English) | Magnesium alloy castings for automobile wheels | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J31 | | Classification of International Standard | 77.120.10 | | Word Count Estimation | 14,170 | | Date of Issue | 2025-08-29 | | Date of Implementation | 2026-03-01 | | Older Standard (superseded by this standard) | GB/T 26649-2011 | | Issuing agency(ies) | State Administration for Market Regulation, National Standardization Administration | GB/T 26649-2025: Magnesium alloy castings for automobile wheels---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT26649-2025
ICS 77.120.10
CCSJ31
National Standard of the People's Republic of China
Replaces GB/T 26649-2011
Magnesium alloy automobile wheel castings
Released on August 29, 2025
Implementation on March 1, 2026
State Administration for Market Regulation
The National Standardization Administration issued
Preface
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.
This document replaces GB/T 26649-2011 "Magnesium alloy automotive wheel castings". Compared with GB/T 26649-2011, except for the structural adjustment
Besides the editorial changes, the main technical changes are as follows.
a) The scope has been changed (see Chapter 1, Chapter 1 of the.2011 edition);
b) The terms and definitions of magnesium alloy automobile wheel castings have been deleted (see 3.1.1 of the.2011 edition);
c) The chemical composition has been changed (see 4.1, 4.1.1 of the.2011 edition);
d) The mechanical property requirements have been changed (see 4.2, 4.1.2 of the.2011 edition);
e) The dimensional and geometric tolerance requirements have been changed (see 4.3, 4.2 of the.2011 edition);
f) The internal quality requirements have been changed (see 4.4, 4.4 of the.2011 edition);
g) Changed the surface quality requirements (see 4.5, 4.3 of the.2011 edition);
h) The chemical composition test method has been changed (see 5.1, 5.1.1 of the.2011 edition);
i) Added dimensional and geometric tolerance test methods (see 5.3);
j) The internal quality test method has been changed (see 5.4, 5.3 of the.2011 edition);
k) The batching has been changed (see 6.1, 6.2 of the.2011 edition);
l) The inspection items have been changed (see 6.2, 6.1.1 of the.2011 edition);
m) Added sampling provisions (see 6.3);
n) The result judgment has been changed (see 6.4, 6.1.2 of the.2011 edition);
o) The requirements for marking, quality certification, packaging, transportation and storage have been changed (see Chapter 7, Chapter 7 of the.2011 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 for Standardization of Castings (SAC/TC54).
This document was drafted by. Weihai Wanfeng Magnesium Technology Development Co., Ltd., Jiamei New Materials Technology (Yulin) Co., Ltd., and China Merchants Testing
Vehicle Technology Research Institute Co., Ltd., Zhejiang Wanfeng Light Alloy Research Institute Co., Ltd., Zhejiang Fengchi Machinery Co., Ltd., China Machinery Engineering Research Institute Co., Ltd.
Shenyang Foundry Research Institute Co., Ltd., Jiayi Technology (Huizhou) Co., Ltd., Chongqing New Energy Storage Materials and Equipment Research Institute, Chongqing University,
Lian University of Technology, Shandong University, Shenyang University of Technology, Lanzhou University of Technology, Foshan Polytechnic, Tongling University, SAIC Volkswagen Co., Ltd.
Company, Henan Shenheng Industrial Co., Ltd., Chongqing Rilian Technology Co., Ltd., Fengyang Ails Light Alloy Precision Forming Co., Ltd., Zhejiang Suijin
Special Casting Co., Ltd., Shanxi Ruige Metal New Materials Co., Ltd., International Magnesium Alloy New Materials Technology Co., Ltd., Shenzhen Lingwei Technology Co., Ltd.
Co., Ltd., Shenzhen Kaimo Industrial Co., Ltd., Changchun Focus United Die Casting Co., Ltd., Shaoxing Jinjiang Machinery Co., Ltd., Chongqing Hezhong Auto
Auto Parts Manufacturing Co., Ltd., Chongqing Zhongqing Gear Co., Ltd., and Ningbo Baiyi Donghe Auto Parts Co., Ltd.
The main drafters of this document are. Wang Aimin, Yu Rihe, Hu Zhongchao, Fan Lichang, Hong Yan, Song Jiangfeng, Liang Huihui, Liu Dan, Pan Yuqing, Chen Shanrong,
Song Kaikai, Hao Hai, Liu Zhifa, Ruan Jiangang, Cheng Shugang, Zhang Xiong, Yuan Lingyang, Wang Xinwei, Zhang Jianxiong, Lian Yuntao, Zhang Wen, Huang Hongjun, Cai Hengzhi,
Xi Huan, Yan Fengyun, Li Tao, Ye Junchao, Li Yufei, Ma Zuopo, Wang Songlin, Liao Jingyun, Wang Xin, Cao Shuhui, Wang Jianguo, Lai Wenxin, Fu Yiqi,
Yiqing.
This document was first published in.2011 and this is the first revision.
Magnesium alloy automobile wheel castings
1 Scope
This document specifies the technical requirements, test methods, inspection rules and marking, quality certification, packaging, transportation, and other aspects of magnesium alloy automobile wheel castings.
Transport and storage.
This document applies to the production and inspection of magnesium alloy automobile wheel castings (hereinafter referred to as castings).
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 228.1 Tensile tests on metallic materials - Part 1.Room temperature test methods
GB/T 231.1 Metallic materials Brinell hardness test Part 1.Test method
GB/T 2933 Terminology, specification codes and markings for wheels and rims for pneumatic tyres
GB/T 5611 Casting Terminology
GB/T 6414-2017 Dimensional tolerances, geometrical tolerances and machining allowances of castings
GB/T 13748.21 Chemical analysis methods for magnesium and magnesium alloys Part 21.Photoelectric direct reading atomic emission spectrometric analysis method for the determination of elements
Vegetarian content
GB/T 39638 X-ray digital imaging inspection of castings
3 Terms and Definitions
The terms and definitions defined in GB/T 2933 and GB/T 5611 apply to this document.
4 Technical Requirements
4.1 Chemical composition
The chemical composition of the casting shall comply with the requirements of Table 1.
Table 1 Chemical composition
alloy
Brand
Chemical composition (mass fraction)
Al Zn Si Mn RE Ca Zr Be Fe Cu Ni Sb Sr
other
Single
Mg
1 ZMgAl9REZn
8.5%~
9.5%
0.45%~
0.90%
0.15%~
0.22%
0.17%~
0.40%
0.5%~
1.0%a
0.5%~
0.8%
0.003%
0.01%
0.025%
- -
0.02%
margin
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