GB/T 10125-2021 PDF English
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GB/T 10125: Historical versions
| Standard ID | USD | BUY PDF | Delivery | Standard Title (Description) | Status |
| GB/T 10125-2021 | 350 | Add to Cart | Auto, 9 seconds. | Corrosion tests in artificial atmospheres - Salt spray tests | Valid |
| GB/T 10125-2012 | 125 | Add to Cart | Auto, 9 seconds. | Corrosion tests in artificial atmospheres -- Salt spray tests | Obsolete |
| GB/T 10125-1997 | 479 | Add to Cart | 3 days | Corrosion tests in artificial atmospheres--Salt spray tests | Obsolete |
| GB/T 10125-1988 | RFQ | ASK | 3 days | Corrosion tests in artificial atmosphere--Salt spray tests (SS tests) | Obsolete |
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GB/T 10125-2021: Corrosion tests in artificial atmospheres - Salt spray tests
---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/GBT10125-2021GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 77.060 CCS H 25 Replacing GB/T 10125-2012 Corrosion tests in artificial atmospheres - Salt spray tests (ISO 9227.2017, MOD) Issued on. AUGUST 20, 2021 Implemented on. MARCH 01, 2022 Issued by. State Administration for Market Regulation; Standardization Administration of PRC.
Table of Contents
Foreword... 4 Introduction... 7 1 Scope... 8 2 Normative references... 9 3 Terms and definitions... 10 4 Principle... 11 5 Test solution... 11 6 Test equipment... 12 7 Methods of evaluating the performance of salt spray chamber... 15 8 Test specimen... 17 9 Placement of test specimens... 18 10 Test conditions... 18 11 Test period... 19 12 Handling of test specimens after the test... 20 13 Evaluation of test results... 21 14 Test report... 21 Appendix A (Informative) Comparison of clause numbers between this document and ISO 9227.2017... 23 Appendix B (Informative) List of technical differences between this document and ISO 9227.2017 and their reasons... 24 Appendix C (Informative) A schematic diagram of the design of a salt spray chamber with the function of treating salt spray waste gas and wastewater.. 26 Appendix D (Informative) Supplementary method for evaluating the performance of salt spray chamber by using zinc reference specimen... 28 Appendix E (Normative) Preparation of organic coating specimen... 30 Appendix F (Normative) Additional information for organic coating test specimens... 32 Appendix G (Informative) Supplementary information about steel reference specimen's designation... 33 References... 34Foreword
This document was drafted in accordance with the rules given in GB/T 1.1-2020 "Directives for standardization - Part 1.Rules for the structure and drafting of standardizing documents". This document replaces GB/T 10125-2012 "Corrosion tests in artificial atmospheres - Salt spray tests". Compared with GB/T 10125-2012, in addition to structural adjustments and editorial changes, the main technical changes are as follows. - ADD the scope of application of the acetic acid salt spray test, copper accelerated acetic acid salt spray test, as well as the unapplicable scope of this method (see Chapter 1); - MODIFY and ADD the normative references (see Chapter 2; Chapter 2 of the 2012 edition); - ADD Chapter 3 "Terms and definitions"; - ADD Chapter 4 "Principles"; - MODIFY the control requirements for the heavy metal impurity content of sodium chloride, which is used in solution preparation (see 5.1; 3.1 of the 2012 edition); - MODIFY the method of measuring the pH value of the collected spray solution (see 5.2; 3.2 of the 2012 edition); - ADD the requirements for specimen holders (see 6.1); - DELETE the requirement that the volume of the salt spray chamber is not less than 0.4 m3 (see 4.2 of the 2012 edition); - ADD the new requirements for spraying in the salt spray chamber (see 6.2); - MODIFY the requirements for the location of the temperature measurement area (see 6.3; 4.3 of the 2012 edition); - ADD the recommended value of spray pressure (see 6.4.2); - MODIFY the requirements for compressed air humidification equipment (see 6.4.3; 4.4 of the 2012 edition); - ADD the guide value of the hot water temperature of the saturation tower, at 160 MPa and 170 MPa spray pressure (see Table 1); - ADD the operation method for obtaining stable, continuous, uniform spray (see 6.4); - ADD the precautions for cleaning after the salt spray chamber test (see 6.6); - MODIFY the use quantity and treatment method of steel reference specimens (see 7.2; 5.2.1, 5.3.1, 5.4.1 of the 2012 edition); - MODIFY the number of steel reference specimens, which are placed in the salt spray chamber, as well as the requirements for the verification method of the salt spray chamber (see 7.3; 5.2.2, 5.3.2, 5.4.2 of the 2012 edition); - DELETE the test time (see 5.2.2, 5.3.2, 5.4.2 of the 2012 edition); - DELETE the method for removing steel corrosion products, which is specified in ISO 8407 (see 5.2.3, 5.3.3, 5.4.3 of the 2012 edition); - MODIFY the writing format of the performance evaluation method of salt spray chamber for the neutral salt spray, acetic acid salt spray, copper accelerated acetic acid salt spray test (see Chapter 7; Chapter 5 of the 2012 edition); - ADD the parameter setting value requirements of the salt spray chamber (see Table 3); - ADD the precautions for the concentration and pH measurement of the salt spray collection solution (see 10.2); - ADD the recommended value for the test frequency of salt spray sedimentation rate (see 10.3); - ADD measures to prevent fluctuations in the concentration and pH of sodium chloride solution (see 10.5); - MODIFY the recommended value of the test period (see 11.1; 9.1 of the 2012 edition); - ADD the requirement that the opening time of the salt spray chamber shall not exceed 1 hour per day, during the test (see 11.2); - ADD an overview of the test sample treatment method after the test (see 12.1); - ADD the specific method for handling the test specimen of the organic coating after the test (see 12.3); - MODIFY the design diagram of the salt spray chamber (see Figure C.1, Figure C.2; Figure A.1, Figure A.2 in Appendix A of the 2012 edition); - MODIFY the number of zinc reference specimens, which are placed in the salt spray chamber, as well as the requirements for the verification method of the salt spray chamber (see D.1, D.2; B.1, B.2 of the 2012 edition); - MODIFY the value of the distance between scratches on the organic coating test specimens (see E.4; C.4 of the 2012 edition); - MODIFY the Appendix G China's foreign standard year number (see Appendix G; Appendix E of the 2012 edition); - DELETE the "Appendix NA" (see Appendix NA of the 2012 edition). This document uses the redrafting method, to modify and adopt ISO 9227.2017 "Corrosion tests in artificial atmospheres - Salt spray tests". Compared with ISO 9227.2017, this document has more structural adjustments. Appendix A lists the comparison of structural adjustment between this document and ISO 9227.2017. There are technical differences between this document and ISO 9227.2017. The terms of these differences have been marked by a vertical single line (|), on the outer margin of the document. Appendix B gives a list of the corresponding technical differences and their reasons. Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents. This document was proposed by the China Iron and Steel Association. This document shall be under the jurisdiction of the National Steel Standardization Technical Committee (SAC/TC 183). Drafting organizations of this document. Qingdao Iron and Steel Research Institute of Nake Testing and Protection Technology Co., Ltd., Metallurgical Industry Information Standards Research Institute, China Building Materials Inspection and Certification Group Co., Ltd., Institute of Metal Research of Chinese Academy of Sciences, University of Science and Technology Beijing, Central Iron and Steel Research Institute Qingdao Marine Corrosion Research Co., Ltd. The main drafters of this document. Yang Zhaohui, Ding Guoqing, Hou Jie, Liu Yujun, Liu Kaiji, Wang Zhenyao, Li Xiaogang, Yang Haiyang, Sun Menghan, Qu Zheng, Du Cuiwei, Tian Zijian. This document was first published in 1997.It was revised for the first time in 2012.This is the second revision.1 Scope
This document specifies the equipment, reagents, methods for neutral salt spray (NSS), acetic acid salt spray (AASS), copper accelerated acetic acid salt spray (CASS) tests. This document also specifies methods for evaluating the corrosiveness of the test chamber atmosphere.2 Normative references
The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) is applicable to this standard. GB/T 6461 Methods for corrosion testing of metallic and other inorganic coatings on metallic substrates - Rating of test specimens and manufactured articles subjected to corrosion tests (GB/T 6461-2002, ISO 10289.1999, IDT) GB/T 9271 Paints and varnishes standard panels for testing (GB/T 9271- 2008, ISO 1514.2004, MOD)3 Terms and definitions
The terms and definitions, as defined in GB/T 10123, as well as the following terms and definitions, apply to this document.4 Principle
4.3 The copper accelerated acetic acid salt spray test (CASS) is a test method, in which a 5% sodium chloride acid solution, added with copper chloride and glacial acetic acid, is atomized, in a controlled environment.5 Test solution
If necessary, filter the solution, before adding it to the storage tank of the equipment, to remove any solid matter, that may block the spray holes of the device.6 Test equipment
The heating system keeps the temperature inside the chamber up to the requirements of 10.1.The distance, between the temperature measurement area and the inner wall of the chamber and the heat source, shall not be less than 100 mm. If the test chamber has been used for AASS or CASS tests, or other solutions different from NSS, it shall not be used directly for NSS tests. If it wants to use it again, it shall thoroughly clean the salt spray chamber;7 Methods of evaluating the performance of salt spray chamber
If the quality loss of the steel reference specimen is within the allowable range, as shown in Table 2, the performance of the test chamber meets the requirements.8 Test specimen
8.2 If there are no other provisions, the test specimen shall be thoroughly cleaned, before the test. The cleaning method depends on the nature of the test specimen material, the surface of the test specimen, its dirt. The cleaning shall not use abrasives or solvents, which may attack the surface of the test specimen. After cleaning the test specimens, care shall be taken to avoid re- contamination.9 Placement of test specimens
9.3 The test specimens can be placed on different levels, in the chamber, BUT they cannot touch the chamber or each other. The distance, between the test specimens, shall not affect the free fall of the salt spray on the surface to be tested; the droplets on the test specimen or its holder shall not fall on other test specimens. For test specimens, which have a total test period of more than 96 h, after inspection, it may allow shifting. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
