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GB/T 16545-2025: Corrosion of metals and alloys - Removal of corrosion products from corrosion test specimens
Status: Valid GB/T 16545: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 16545-2025 | English | 244 |
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Corrosion of metals and alloys - Removal of corrosion products from corrosion test specimens
| Valid |
GB/T 16545-2025
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| GB/T 16545-2015 | English | 90 |
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Corrosion of metals and alloys -- Removal of corrosion products from corrosion test specimens
| Valid |
GB/T 16545-2015
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| GB/T 16545-1996 | English | 399 |
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Corrosion of metals and alloys. Removal of corrosion products from corrosion test specimens
| Obsolete |
GB/T 16545-1996
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PDF similar to GB/T 16545-2025
Basic data | Standard ID | GB/T 16545-2025 (GB/T16545-2025) | | Description (Translated English) | Corrosion of metals and alloys - Removal of corrosion products from corrosion test specimens | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H25 | | Classification of International Standard | 77.060 | | Word Count Estimation | 12,129 | | Date of Issue | 2025-06-30 | | Date of Implementation | 2026-01-01 | | Older Standard (superseded by this standard) | GB/T 16545-2015 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 16545-2025: Corrosion of metals and alloys - Removal of corrosion products from corrosion test specimens
---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/GBT16545-2025
ICS 77.060
CCSH25
National Standard of the People's Republic of China
Replaces GB/T 16545-2015
Corrosion of metals and alloys
Removal of corrosion products from corrosion specimens
(ISO 8407.2021, IDT)
Released on June 30, 2025
Implementation on January 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 16545-2015 "Corrosion of metals and alloys - Removal of corrosion products from corrosion test specimens" and GB/T 16545-
Compared with.2015, in addition to structural adjustments and editorial changes, the main technical changes are as follows.
--- Added warning (see title);
--- Added terms and definitions (see Chapter 3);
--- Deleted the description that the sample should be lightly brushed before electrolytic cleaning (see 2.3.2 of the.2015 edition);
--- Added the contents of the test report (see Chapter 5).
This document is equivalent to ISO 8407.2021 "Corrosion of metals and alloys — Removal of corrosion products from test specimens".
The following minimal editorial changes have been made to this document.
--- Incorporates the amendments to ISO 8407.2021/Amd1.2025.The outer margins of the clauses involved are indicated by vertical
Double lines (‖) are marked.
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 by the China Iron and Steel Association.
This document is under the jurisdiction of the National Technical Committee on Steel Standardization (SAC/TC183).
This document was drafted by. Jiangsu Chengxin Inspection and Certification Co., Ltd., Metallurgical Industry Information Standards Research Institute, Guoneng Zhejiang Ninghai
Power Generation Co., Ltd., Benxi Steel Plate Co., Ltd., and State Grid Xinjiang Electric Power Co., Ltd. Electric Power Science Research Institute.
The main drafters of this document are. Wang Shuqiang, Li Qian, Lu Xiaobin, Wang Tianwei, Liu Hongliang, He Cheng, Feng Xiumei, Hou Jie, Hong Bing, Wang Yafen, Wang Xinxin,
Chang Shouqin, Sun Menghan, Feng Liguo, Huang Jianguo, Wang Zongjiang, Tian Zijian.
This document was first published in.1996, revised for the first time in.2015, and this is the second revision.
Corrosion of metals and alloys
Removal of corrosion products from corrosion specimens
Warning - Personnel Safety Rules. Because of the health and safety hazards involved, solutions used to remove corrosion products should be handled by professionals.
To ensure that the procedures can be carried out correctly, the equipment should be used and maintained by professionals.
1 Scope
This document specifies the method for removing corrosion products formed on corrosion test specimens of metals and alloys in corrosive environments.
NOTE. The term "metal" as used in this document refers to pure metals and alloys.
The method specified in this document aims to remove all corrosion products without substantially damaging the metal matrix. This allows for accurate determination of
The mass loss of metal in a corrosive environment.
This document may also be applicable to metallic coatings in some cases, provided that the possible influence of the substrate is taken into account.
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 Methods
4.1 Overview
4.1.1 It is advisable to first perform light mechanical cleaning, for example, by washing with a soft brush under running water to remove loosely attached or large pieces of corrosion products.
4.1.2 If the process described in 4.1.1 cannot remove all corrosion products, other treatment methods may be used, mainly including the following three methods.
type.
a) chemical method;
b) electrolysis;
c) More intensive mechanical treatments.
NOTE. These treatments will also remove some of the metal matrix.
Whichever method is used, repeated cleaning is required to ensure complete removal of corrosion products. Visual inspection should be used to verify the cleaning results.
For surfaces with pits, corrosion products will accumulate in the pits, and it is advisable to use a low-power microscope (for example. 7×~30×) to inspect the cleaning results.
4.1.3 The ideal treatment method should only remove corrosion products without damaging any metal matrix. Two methods are usually used to determine. one method
One method is to use a comparison sample (see 4.1.4); another method is to clean the corrosion sample multiple times (see 4.1.5).
The rust removal performance of the series of solutions is not impaired and this method should continue to be used.
Note 1.When the solution changes color or contains a large amount of corrosion products, the solution needs to be discarded.
Note 2.Some solutions may require aging before use to avoid corrosion of the substrate.
4.1.4 The same method as that used for the corroded specimen should be used to clean the uncorroded comparison specimen, which should be cleaned in the same manner as the corroded specimen.
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