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GB/T 6803: Historical versions
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| GB/T 6803-2023 | English | 369 |
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Test method for drop-weight test to determine nil-ductility transition temperature of ferritic steels
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| GB/T 6803-2008 | English | 479 |
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Test method for drop-weight test to determine nil-ductility transition temperature of ferritic steels
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| GB/T 6803-1986 | English | 399 |
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Standard method for conducting drop weight test to determine nil ductility transition temperature of ferritic steels
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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 | 18,162 |
| 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| Older Standard (superseded by this standard) | GB/T 6803-2008 |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
Table of contents
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:
...
