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GB/T 6803-2023 English PDF

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GB/T 6803-2023: Test method for drop-weight test to determine nil-ductility transition temperature of ferritic steels
Status: Valid

GB/T 6803: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
GB/T 6803-2023	English	369	Add to Cart	4 days [Need to translate]	Test method for drop-weight test to determine nil-ductility transition temperature of ferritic steels	Valid	GB/T 6803-2023
GB/T 6803-2008	English	479	Add to Cart	3 days [Need to translate]	Test method for drop-weight test to determine nil-ductility transition temperature of ferritic steels	Obsolete	GB/T 6803-2008
GB/T 6803-1986	English	399	Add to Cart	3 days [Need to translate]	Standard method for conducting drop weight test to determine nil ductility transition temperature of ferritic steels	Obsolete	GB/T 6803-1986

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Basic data

Standard ID	GB/T 6803-2023 (GB/T6803-2023)
Description (Translated English)	Test method for drop-weight test to determine nil-ductility transition temperature of ferritic steels
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	H22
Classification of International Standard	77.040.10
Word Count Estimation	18,120
Date of Issue	2023-12-28
Date of Implementation	2024-07-01
Older Standard (superseded by this standard)	GB/T 6803-2008
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration

GB/T 6803-2023: Test method for drop-weight test to determine nil-ductility transition temperature of ferritic steels

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 77:040:10 CCSH22 National Standards of People's Republic of China Replace GB/T 6803-2008 Drop weight test method for non-plastic transition temperature of ferritic steels Published on 2023-12-28 2024-07-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Principle 1 5 Sample 1 6 Test equipment 3 7 Test requirements 5 8 Test procedure 6 9 Test result evaluation 7 10 Test Report 9 Appendix A (normative) Drop weight auxiliary specimen dimensions and test conditions 10 Appendix B (Informative) Butt welded joint drop weight specimen 11 Reference 12

Foreword

This document complies with the provisions of GB/T 1:1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting: This document replaces GB/T 6803-2008 "Drop weight test method for non-plastic transition temperature of ferritic steels" and is consistent with GB/T 6803-2008 In comparison, in addition to structural adjustments and editorial changes, the main technical changes are as follows: ---The test principle has been changed (see Chapter 4, Chapter 3 of the:2008 edition); ---Changed the yield strength range and impact energy range of the drop weight test (see Table 3, Table 3 of the:2008 version); ---Added requirements for testing machine calibration (see 6:7): Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents: This document is proposed by the China Iron and Steel Industry Association: This document is under the jurisdiction of the National Steel Standardization Technical Committee (SAC/TC183): This document was drafted by: Hefei General Machinery Research Institute Co:, Ltd:, Jiangyin Xingcheng Special Steel Co:, Ltd:, Harbin Boiler Factory Co:, Ltd: Responsible company, Jiangsu Chengxin Inspection, Testing and Certification Co:, Ltd:, Shenzhen Sansi Zongheng Technology Co:, Ltd:, Erzhong (Deyang) Heavy Equipment Equipment Co:, Ltd:, Metallurgical Industry Information Standards Research Institute: The main drafters of this document: Zhang Xiaohu, Lu Daiding, Qi Xiaoguang, Sun Jiaxin, Gan Meilu, Liang Tingfeng, Guan Hongliang, Dong Li, Chen Yong, Zhang Ming, Rao Liwen, Zhang Qiang, Hou Huining, Ke Yang, Wang Shuqiang: This document was first published in 1986, revised for the first time in:2008, and this is the second revision: Drop weight test method for non-plastic transition temperature of ferritic steels

1 Scope

This document specifies the principles, specimens, test equipment, test requirements, and test procedures of the non-plastic transition temperature drop weight test method for ferritic steels: Procedure, test result evaluation and test report: This document is suitable for determining the non-plastic transformation of ferritic steel products (including plates, profiles, cast steel and forged steel) with a thickness of not less than 12mm: Change temperature:

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document: GB/T 984 surfacing electrode GB/T 2975 Sampling location and sample preparation for mechanical property testing of steel and steel products JJF1445 Calibration specification for drop weight impact testing machine

3 Terms and definitions

The following terms and definitions apply to this document: 3:1 ferritic steelferriticsteel All α-Fe steels: Note: Including martensite, pearlite, bainite and other non-austenitic steels: 3:2 The maximum temperature at which the specimen breaks when the drop weight test is carried out in accordance with the provisions of this method:

4 Principles

Each of a set of specimens of a given ferritic steel material is subjected to a single drop weight impact load at a selected temperature: Make the sample produce a fixed deflection, and measure the maximum temperature when the sample breaks, that is, the no-plastic transition (NDT) temperature:

5 samples

5:1 Sampling location and direction of specimens 5:1:1 When taking samples from steel plates or profiles, the sampling location and direction should be in accordance with relevant product standards or agreements; if there is no provision, the sampling location and direction should be in accordance with According to the provisions of GB/T 2975, the cutting direction of the steel plate blank should be transverse: Unless otherwise specified, the specimens for drop weight specimens shall be taken from other mechanical Nearby location of performance specimen:

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