This standard replaces GB/T 13825-1992 "Weighing method for the determination of the mass of hot-dip galvanized layer on ferrous metal materials". This standard specifies the method for determining the mass per unit area of ​​hot-dip galvanized layer on ferrous metal materials. This standard requires accurate calculation of the surface area of ​​the test specimen. Therefore, this standard is applicable to test specimens whose surface area is easy to determine. Compared with GB/T 13825-1992, the main changes in this standard are as follows: - In accordance with the instructions of ISO 1460, the description of the measurement procedure has been modified; - The measurement symbols used in ISO 1460:1992 have been adopted in this standard; - In accordance with the provisions of ISO 1460:1992, Chapter 6 adopts the internationally accepted unit mass calculation formula; - In accordance with the provisions of ISO 1460:1992, the test report in Chapter 7 has been modified and footnote 1) has been added; - In accordance with the provisions of ISO 1460:1992, the requirements for reproducibility in Article 6.2 have been supplemented. GB/T 13825-2008 Metallic coatings, ferrous metal materials, hot-dip galvanized layer, unit area mass, weighing method GB/T13825-2008 standard download decompression password: www.bzxz.net
This standard specifies the method for determining the unit area mass of the hot-dip galvanized layer on ferrous metal materials. This standard requires accurate calculation of the surface area of ​​the sample. Therefore, this standard is applicable to samples whose surface area is easy to determine.
class="f14" style="padding-top:10px; padding-left:12px; padding-bottom:10px;"> This standard is equivalent to ISO1460:1992 "Metallic coatings, ferrous metal materials, hot-dip galvanized layer, unit area mass, weighing method" (English version).
This standard is drafted based on the translation of ISO1460:1992. This standard has made the following editorial changes to ISO1460:1992:
--- According to the existing domestic standard practice for covering layers, the standard name is preceded by "metallic covering layer";
--- The foreword of the international standard is cancelled, and the foreword of the Chinese standard is added;
--- This standard replaces this international standard.
This standard replaces GB/T13825-1992 "Method for the determination of the quality of hot-dip galvanized layer of ferrous metal materials by weighing".
Compared with GB/T13825-1992, the main changes of this standard are as follows:
--- According to the description of ISO1460, the description of the measurement procedure has been modified;
--- The measurement symbols used in ISO1460:1992 have been adopted in this standard;
--- According to the provisions of ISO1460:1992, the internationally accepted unit mass calculation formula has been adopted in Chapter 6;
--- According to the provisions of ISO1460:1992, the test report in Chapter 7 has been modified and footnote 1 has been added);
--- According to the provisions of ISO1460:1992, the requirements for reproducibility in Article 6.2 have been supplemented.
This standard is proposed by the China Machinery Industry Federation.
This standard is under the jurisdiction of the National Technical Committee for Standardization of Metallic and Non-metallic Coverings (SAC/TC57).
The drafting units of this standard are: Beijing Yongtaihe Metal Anticorrosion Technology Co., Ltd., Ma'anshan Dingtai Rare Earth New Materials Co., Ltd., and Wuhan Materials Protection Research Institute.
The main drafters of this standard are: Ji Jing, Zhang Hongwei, Shi Zhimin, Liu Jilu, and Jia Jianxin.
The previous versions of the standards replaced by this standard are:
---GB/T13825-1992.

ICS 25.220. 40
National Standard of the People's Republic of China
GB/T13825—2008/IS01460:1992 replaces GI3/T13825—1992
Metallic coatings
Hot dip galvanized coatings on ferrous materials
Metallic coatings-Hot dip galvanized coatings on ferrous materials-Gravimetric determination of the mass per unit area(ISO 1460:1992,IDT)
Published on 2008-06-19
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Administration of Standardization of the People's Republic of China
Implemented on 2009-01-01
GB/T 13825—2008/IS0 1460 :1992 This standard adopts ISO1460.1992 "Method for weighing unit area mass of hot-dip galvanized layer of metallic materials" (English version).
This standard is drafted based on the translation of ISO1460:1992. This standard has made the following editorial changes to ISO1460:1992: According to the existing domestic standard practice for coating series, "metal coating" is added before the standard name; - the foreword of the international standard is cancelled, and the foreword of the Chinese standard is added; - "-" is used instead of "this international standard" This standard replaces GB/T13825-1992 "Metallic coating black coating" Quality determination of hot-dip galvanized layer of non-ferrous metal materials by weighing method". Compared with GB/T13825-1992, the main changes of this standard are as follows: "According to the instructions of ISO1460, the description of the measurement procedure has been modified; the measurement symbols used in IS01460:1992 have been adopted in this standard; according to the provisions of ISO1460:1992, Chapter 6 adopts the internationally accepted unit mass calculation formula; according to the provisions of ISO1460:1992, the test report of Chapter 7 has been modified and footnote 1 has been added): according to the provisions of ISO1460:1992, the requirements for reproducibility in Article 6.2 have been supplemented. This standard was proposed by the China Machinery Industry Federation. This standard is under the jurisdiction of the National Technical Committee for Standardization of Metallic and Non-metallic Coatings (SAC/TC57). The units that started this standard: Beijing Yongtaihe Metal Anticorrosion Technology Co., Ltd., Ma'anshan Dingtai Rare Earth New Materials Co., Ltd., and Wuhan Institute of Materials Protection.
The main drafters of this standard are Ji Jing, Zhang Hongwei, Shi Zhimin, Liu Jilu and Jia Jianxin. The previous versions of the standard replaced by this standard are: -GB/T 13825--1992.
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1 Scopewww.bzxz.net
GB/T13825-2008/IS01460:1992 Metallic coatings - Weighing method for the mass per unit area of ​​hot-dip galvanized layer on ferrous metal materials
This standard specifies the method for determining the mass per unit area of ​​hot-dip galvanized layer on ferrous metal materials. This standard requires the accurate calculation of the surface area of ​​the specimen. Therefore, this standard is applicable to specimens whose surface area is easy to determine. If the specimen is too heavy to be implemented according to the requirements of Chapter 5 of this standard, other methods should be used to determine the mass of the hot-dip galvanized layer. 2 Principle
Immerse a sample with a known surface area in a corrosion-inhibiting acidic solution, and determine the mass loss of the sample by weighing the mass of the sample before and after the coating is dissolved. Calculate the mass of the hot-dip galvanized layer per unit area of ​​the sample according to the mass loss of the sample. 3 Follow-up plating solution
Dissolve 3.5 hexamethylenetetramine in 500 mL of concentrated hydrochloric acid
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