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GB/T 2423.18-2021 (GB/T2423.18-2021)

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GB/T 2423.18-2021
ICS 19.040
CCS K 04
GB/T 2423.18-2021 / IEC 60068-2-52:2017
Replacing GB/T 2423.18-2012
Environmental testing - Part 2: Test methods -
Test Kb: Salt mist, cyclic (sodium chloride solution)
[IEC 60068-2-52:2017, Environmental testing - Part 2-52: Tests -
Test Kb: Salt mist, cyclic (sodium chloride solution), IDT]
ISSUED ON: MAY 21, 2021
Issued by: State Administration for Market Regulation;
Standardization Administration of the PRC.
Table of Contents
Foreword ... 3 
Introduction ... 5 
1 Scope ... 7 
2 Normative references ... 7 
3 Terms and definitions ... 7 
4 General description of the test ... 8 
5 Test apparatus ... 9 
6 Salt solution ... 9 
7 Initial measurements ... 10 
8 Preconditioning ... 10 
9 Testing ... 10 
10 Recovery (at the end of testing) ... 15 
11 Final measurements ... 15 
12 Information to be given in the relevant specification ... 15 
13 Information to be given in the test report ... 15 
Annex A (Informative) Typical apparatus for cyclic salt mist, humid condition,
dry condition and standard atmosphere corrosion tests ... 17 
Annex B (Informative) Description of each test method ... 18 
Annex NA (Informative) Constituent documents of GB/T 2423 ... 20 
Bibliography ... 24 
Figure A.1 -- Schematic diagram of test apparatus ... 17 
Table 1 -- Test cycles for test methods 1 to 8 ... 14 
This document is drafted in accordance with GB/T 1.1-2020 "Directives for
standardization - Part 1: Rules for the structure and drafting of standardizing
This document is Part 18 of GB/T 2423. For the issued parts of GB/T 2423, see
Annex NA.
This document replaces GB/T 2423.18-2012 "Environmental testing - Part 2:
Test methods - Test Kb: Salt mist, cyclic (sodium chloride solution)". Compared
with GB/T 2423.18-2012, in addition to structural adjustment and editorial
changes, the main technical changes are as follows:
a) Add a description of the effect of test conditions on the specimens (see
Clause 4);
b) Add the cycle process of test methods 7 and 8 (see Clause 9);
c) Modify Figure 1;
d) Add "Information to be given in the test report" (see Clause 13).
This document, using translation method, is identical to IEC 60068-2-52:2017
"Environmental testing - Part 2-52: Tests - Test Kb: Salt mist, cyclic (sodium
chloride solution)".
China’s documents which have a consistent correspondence with the
international documents normatively referenced in this document are as follows:
- GB/T 2421-2020 Environmental testing - General and guidance (IEC
60068-1:2013, IDT);
- GB/T 2423.3-2016 Environmental testing - Part 2: Testing method - Test
Cab: Damp heat, steady state (IEC 60068-2-78:2012, IDT);
- GB/T 10125-2012 Corrosion tests in artificial atmospheres - Salt spray tests
(ISO 9227:2006, IDT).
This document has made the following editorial changes:
a) Change the name of this document to "Environmental testing - Part 2: Test
methods - Test Kb: Salt mist, cyclic (sodium chloride solution)";
b) Add an informative annex "Constituent documents of GB/T 2423" (see
Annex NA).
Attention is drawn to the possibility that some of the elements of this document
may be the subject of patent rights. The issuing authority of this document shall
not be held responsible for identifying any or all such patent rights.
This document was proposed by and shall be under the jurisdiction of National
Technical Committee 8 on Environmental Conditions of Electric and Electronic
Products and Environmental Test of Standardization Administration of China
(SAC/TC 8).
Drafting organizations of this document: China National Electric Apparatus
Research Institute Co., Ltd.; CVC Certification & Testing Co., Ltd.; Tsinghua
Shenzhen International Graduate School; Beijing Goldwind Science & Creation
Windpower Equipment Co., Ltd.; Shenzhen ORT Testing Technology Co., Ltd.;
Electric Power Research Institute of Hainan Power Grid Co., Ltd.; Guangzhou
Power Supply Bureau of Guangdong Power Grid Co., Ltd.; Wuxi Sunan
Experimental Equipment Co., Ltd.; Wuxi Soyater Test Equipment Co., Ltd.;
Shanghai Rece Electronic Technology Co., Ltd.; CenerTech Tianjin Chemical
Research and Design Institute Co., Ltd.; Hongli Zhihui Group Co., Ltd.; Nanjing
Wuhe Test Equipment Co., Ltd.; Shenzhen Polytechnic; Chongqing Yinhe
Experimental Equipment Co., Ltd.; Fujian Xinneng Offshore Wind Power R&D
Center Co., Ltd.; Beihang University; CCIC Southern Testing Co., Ltd.; Ningbo
Ouzhi Electrical Technology Co., Ltd.; Shinry Technologies Co., Ltd.; The Fifth
Electronics Research Institute of the Ministry of Industry and Information
Technology; Hainan Power Grid Co., Ltd.
Main drafters of this document: Jie Ganxin, Xu Xuedong, Wang Xilin, Hu
Xiaoming, Mei Liguang, Che Hansheng, Zhao Hailong, Wang Yong, Ni Yangyi,
Zhou Zhongming, Xu Dazhong, Guo Zhijia, Lv Tiangang, Zhang Dinghu, Yu
Zhan, Li Shushan, Wang Mingyang, Wang Xiaohui, Ma Ping , Ke Cilong, Gao
Jun, Zhang Hongbin, Fang Lianhang, Jia Zhidong, Liu Jing, An Penghui, Hu
The previous releases of this document and the documents it replaces are as
- It was first issued in 1985 as GB/T 2423.18-1985, first revised in 2000, and
second revised in 2012;
- This is the third revision.
Environmental testing - Part 2: Test methods -
Test Kb: Salt mist, cyclic (sodium chloride solution)
1 Scope
This document specifies the application of the cyclic salt mist test to
components or equipment designed to withstand a salt-laden atmosphere as
salt can degrade the performance of metallic and/or non-metallic materials.
This document is applicable to components or equipment that can withstand a
salt-laden atmosphere. During the test, the corresponding severity level is
selected according to the degree of tolerance.
2 Normative references
The contents of the following documents, through normative references in this
text, constitute indispensable provisions of this document. Among them, for
dated references, only the edition corresponding to that date applies to this
document. For undated references, the latest edition (including all amendments)
applies to this document.
ISO 9227 Corrosion tests in artificial atmospheres - Salt spray tests
IEC 60068-1 Environmental testing - Part 1: General and guidance
IEC 60068-2-78 Environmental testing - Part 2-78: Tests - Test Cab: Damp
heat, steady state
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at
the following addresses:
IEC Electropedia: http://www.electropedia.org/
ISO Online browsing platform: http://www.iso.org/obp
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.