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QC/T 272-2025 English PDF

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QC/T 272-2025: Technical specifications of aluminum alloy castings for automobiles
Status: Valid

QC/T 272: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
QC/T 272-2025English439 Add to Cart 4 days [Need to translate] Technical specifications of aluminum alloy castings for automobiles Valid QC/T 272-2025
QC/T 272-1999English279 Add to Cart 3 days [Need to translate] (Automotive aluminum castings)   QC/T 272-1999

Basic data

Standard ID QC/T 272-2025 (QC/T272-2025)
Description (Translated English) Technical specifications of aluminum alloy castings for automobiles
Sector / Industry Automobile & Vehicle Industry Standard (Recommended)
Classification of Chinese Standard T04
Classification of International Standard 43.020
Word Count Estimation 22,249
Date of Issue 2025-05-09
Date of Implementation 2025-11-01
Older Standard (superseded by this standard) QC/T 272-1999
Issuing agency(ies) Ministry of Industry and Information Technology of the People's Republic of China

QC/T 272-2025: Technical specifications of aluminum alloy castings for automobiles

---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/QCT272-2025
Automobile Industry Standards of the People's Republic of China Replaces QC/T 272-1999 2025-05-09 Release 2025-11-01 Implementation CCS T 04 ICS 43.020 Ministry of Industry and Information Technology of the People's Republic of China issued Technical requirements for aluminum alloy castings for automobiles Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Code 2 5 Casting Classification 3 6 Technical Requirements 3 7 Test Methods 6 8 Inspection and Evaluation 7 9 Logo, packaging 9 Appendix A (Informative) Comparison of the main cast aluminum alloy codes and grades commonly used at home and abroad 10 Appendix B (Normative) Mechanical Properties of Cast Aluminum Alloys 11 Appendix C (Informative) Mechanical properties of commonly used aluminum casting body samples 14 Appendix D (Normative) Testing of porosity and maximum pore size on machining surfaces and metallographic cross-sections of castings 15

Table of Contents

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 QC/T 272-1999 “Technical Specifications for Aluminum Alloy Castings for Automobiles”. In addition to the integration and editorial changes, the main technical changes are as follows. a) The scope of application has been changed to explicitly exclude high-pressure castings (see Chapter 1 of the.1999 edition); b) Added terms and definitions (see Chapter 3); c) Added heat treatment state codes, alloy casting methods and modification treatment codes (see Chapter 4); d) Added the classification of castings (see Chapter 5); e) Added casting method and heat treatment state (see 6.1); f) The chemical composition table has been deleted. The chemical composition table shall be in accordance with GB/T 1173 or relevant standards and technical agreements determined by the supplier and the buyer (see 6.2,.1999 Version 3.1); g) The mechanical properties table has been deleted. The relevant standards and technical agreements specified in Appendix B or between the supplier and the purchaser shall apply (see 6.3,.1999 edition). 3.2); h) Added microstructure requirements (see 6.4); i) The shape and size tolerance requirements have been changed, and the reference standards have been updated (see 6.5.1, 3.4 of the.1999 edition); j) Added weight tolerance requirements (see 6.5.2); k) The surface quality requirements have been changed (see 6.6, 3.5 of the.1999 edition); l) Added internal quality requirements (see 6.7); m) Added airtightness requirements (see 6.8); n) The repair and correction requirements have been changed (see 6.9, 3.6 of the.1999 edition); o) The chemical composition test has been changed (see 7.1, 4.4 of the.1999 edition); p) The mechanical properties test has been modified (see 7.2, 4.1 of the.1999 edition); q) Added metallographic examination method (see 7.3); r) The dimensional inspection content has been changed (see 7.4, 4.3 of the.1999 edition); s) Added surface quality inspection and internal quality inspection (see 7.5 and 7.6); t) Added airtightness test (see 7.7); u) The inspection and assessment requirements have been changed (see Chapter 8, Chapter 5 of the.1999 edition); v) The marking and packaging requirements have been changed (see Chapter 9, Chapter 6 of the.1999 edition); w) Added mechanical properties of cast aluminum alloy (see Appendix B); x) Added porosity and maximum pore size testing for casting machined surfaces and metallographic sectioning (see Appendix D). 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 was proposed and coordinated by the National Technical Committee for Standardization of Automotive Products (SAC/TC 114). This document was drafted by. SAIC Motor Corporation Limited, Dongfeng Commercial Vehicle Co., Ltd., China Aluminum Materials Application Research Institute Co., Ltd., Hubei Hangte Assembly Manufacturing Co., Ltd., Ningbo Tuopu Auto Parts Co., Ltd., Shanghai Huizhong Automobile Manufacturing Co., Ltd., Chongqing Meilixin Technology Co., Ltd. The main drafters of this document are. Shao Baiming, Ni Lei, Yuan Haibo, Fan Liangwei, Chu Hongmei, Li Nan, Lei Jian, Zhong Gu, Li Yunxiang, Xia Kai, Wang Yongxin, Liu Feng and Xu Cheng. The previous versions of this document and the documents it replaces are as follows. --First published in 1989 as ZB T 05001-1989; --First revised in.1999 as QC/T 272-1999; --This is the second revision. Technical requirements for aluminum alloy castings for automobiles 1 Scope This document specifies the classification, technical requirements, inspection methods, inspection evaluation, marking and packaging of aluminum alloy castings for automobiles. This document applies to sand and metal mold aluminum alloy castings for automobiles (excluding high-pressure castings). 2 Normative references The contents of the following documents constitute the essential clauses of this document through normative references in this document. Only the version corresponding to that date applies to this document; for undated referenced documents, 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 1173 Cast aluminum alloys GB/T 3075 Axial force control method for fatigue testing of metallic materials GB/T 6414 Dimensional tolerances, geometrical tolerances and machining allowances for castings GB/T 7999 Photoelectric direct reading emission spectroscopy analysis method for aluminum and aluminum alloys GB/T 11351 Casting Weight Tolerance GB/T 13298 Metal microstructure examination methods GB/T 15056 Method for evaluating casting surface roughness GB/T 20975 (all parts) Chemical analysis methods for aluminium and aluminium alloys GB/T 25745 Heat treatment of cast aluminum alloys GB/T 36589 Industrial computerized tomography (CT) testing of castings JB/T 7946.1 Metallography of Cast Aluminum Alloys Part 1.Modification of Cast Aluminum-Silicon Alloys JB/T 7946.2 Metallography of Cast Aluminum Alloys Part 2.Overburning of Cast Aluminum-Silicon Alloys JB/T 7946.3 Metallography of Cast Aluminum Alloys Part 3.Pinholes in Cast Aluminum Alloys HB/Z 61 Penetrant Testing ASTM E155 Standard reference radiographs for inspection of aluminum and magnesium castings minum and magnesium castings) ASTM E2422 Standard digital reference images for inspection of aluminum castings minum castings 3 Terms and Definitions The following terms and definitions apply to this document. 3.1 high stress zone The area in the casting stress CAE analysis cloud diagram where the value is greater than or equal to 60% of the material's minimum yield strength. 3.2 functional zone There are areas on the casting that require sealing and assembly, such as threaded holes, bearing mounting surfaces, etc.

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