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GB/T 19747-2025 English PDF

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US$304.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 19747-2025: Corrosion of metals and alloys - Determination of bimetallic corrosion in atmospheric exposure corrosion tests
Status: Valid

GB/T 19747: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 19747-2025	304	Add to Cart	3 days	Corrosion of metals and alloys - Determination of bimetallic corrosion in atmospheric exposure corrosion tests	Valid
GB/T 19747-2005	384	Add to Cart	3 days	Corrosion of metals and alloys -- Determination of bimetallic corrosion in outdoor exposure corrosion tests	Valid

Similar standards

GB/T 22639 GB/T 19292.4 GB/T 19292.1 GB/T 20854 GB/T 19746

Basic data

Standard ID: GB/T 19747-2025 (GB/T19747-2025)
Description (Translated English): Corrosion of metals and alloys - Determination of bimetallic corrosion in atmospheric exposure corrosion tests
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H25
Classification of International Standard: 77.060
Word Count Estimation: 15,125
Date of Issue: 2025-06-30
Date of Implementation: 2026-01-01
Older Standard (superseded by this standard): GB/T 19747-2005
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 19747-2025: Corrosion of metals and alloys - Determination of bimetallic corrosion in atmospheric exposure corrosion 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/GBT19747-2025
ICS 77.060 CCSH25 National Standard of the People's Republic of China Replaces GB/T 19747-2005 Corrosion of metals and alloys Bimetallic atmospheric exposure corrosion assessment (ISO 7441.2015, 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 19747-2005 "Corrosion of metals and alloys - Bimetallic outdoor exposure corrosion test" and GB/T 19747- Compared with.2005, in addition to structural adjustments and editorial changes, the main technical changes are as follows. --- Deleted the "General Principles" of the original standard (see Chapter 3 of the.2005 edition); --- Added Chapter 3 "Terms and Definitions" (see Chapter 3); --- Added Chapter 4 "Method Overview and Comparison" (see Chapter 4); --- Added an overview of sample types (see 5.1.1); --- Added the preparation method of gasket test specimens (see 5.1.2); --- Added the preparation method of wire wound bolt test specimens (see 5.1.3); --- Added exposure test methods for washer test and wire wound bolt test specimens (see Chapter 6, Chapter 6 of the.2005 edition); --- Deleted the provisions on the corrosion depth determination method, and added the weight loss evaluation method for the washer test and the wire wound bolt test specimens In accordance with the provisions of the.2005 edition, the calculation method of the bimetallic effect is added (see Chapter 7, Chapter 7 of the.2005 edition); --- Changed the content of the test report (see Chapter 8, Chapter 8 of the.2005 edition); --- Deleted the sample list (see Appendix A of the.2005 edition); --- Deleted the record of appearance change results (see Appendix B of the.2005 edition); --- Deleted the record of corrosion depth test results (see Appendix C of the.2005 edition); --- Deleted the record of mechanical properties change test results (see Appendix D of the.2005 edition); --- Deleted the record of weight loss results (see Appendix E of the.2005 edition). This document is equivalent to ISO 7441.2015 “Corrosion of metals and alloys—Assessment of corrosion by exposure to bimetallic atmospheres”. 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. Qingdao Steel Research Institute Nake Detection and Protection Technology Co., Ltd., Metallurgical Industry Information Standards Research Institute, Guoneng Zhejiang Ninghai Power Generation Co., Ltd., University of Science and Technology Beijing, and Qingdao Marine Corrosion Research Institute Co., Ltd. of the Central Iron and Steel Research Institute. The main drafters of this document are. Ding Guoqing, Li Qian, Feng Liguo, Li Xiaogang, Wang Xifeng, Lu Yongzhen, Hou Jie, Du Cuiwei, Liu Kaiji, Tian Zijian, Song Xuewei, Sun Menghan, and Chen Huajie. The previous versions of this document and the documents it replaces are as follows. ---First published in.2005 as GB/T 19747-2005; ---This is the first revision. Corrosion of metals and alloys Bimetallic atmospheric exposure corrosion assessment

1 Scope

This document specifies and compares methods for the determination of bimetallic corrosion of metals and coated metals in atmospheric corrosion tests. NOTE. In this document, the term "metal" refers to metals and their alloys, and the term "coated metal" refers to metals and their alloys with metallic or non-metallic coatings. This document is applicable to the determination of the type and extent of corrosion occurring when dissimilar metals come into contact in natural atmospheric environments.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. ISO 1456 Metallic and other inorganic coatings Nickel, nickel-chromium, copper-nickel and copper-nickel-chromium electroplated coatings Note 1.GB/T 9797-2022 Metallic and other inorganic coatings Nickel, nickel-chromium, copper-nickel and copper-nickel-chromium electroplated coatings (ISO 1456.2009, MOD) Note 2.GB/T 9799-2024 Metallic and other inorganic coatings - Treated zinc coatings on iron and steel (ISO 2081.2018, MODD) ISO 6892-1 Metallic materials - Tensile tests - Part 1.Test methods at room temperature Note 3.GB/T 228.1-2021 Tensile testing of metallic materials Part 1.Test methods at room temperature (ISO 6892-1.2019, MOD) and definitions) Note 4.GB/T 10123-2022 Corrosion of metals and alloys Basic terms and definitions (ISO 8044.2020, IDT) Note 5.GB/T 16545-2015 Corrosion of metals and alloys - Removal of corrosion products from corrosion test specimens (ISO 8407.2009, IDT) ISO 8565 Metals and alloys - Atmospheric corrosion tests - General requirements for field tests Note 6.GB/T 14165-2008 Atmospheric corrosion testing of metals and alloys - General requirements for field tests (ISO 8565.1992, IDT) ISO 15510 Stainless steel chemical composition

3 Terms and Definitions

For the purposes of this document, the terms and definitions defined in ISO 8044 and the following apply. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 19747-2025_English be delivered?

Answer: Upon your order, we will start to translate GB/T 19747-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 19747-2025_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 19747-2025_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 19747-2025?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 19747-2025 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.