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| SN/T 2082-2008 | English | 359 |
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Test method for rockwell hardness (HRB) of cold-rolled steel sheet
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SN/T 2082-2008
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PDF similar to SN/T 2082-2008
Basic data | Standard ID | SN/T 2082-2008 (SN/T2082-2008) | | Description (Translated English) | Test method for rockwell hardness (HRB) of cold-rolled steel sheet | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | H21 | | Word Count Estimation | 9,981 | | Date of Issue | 2008-04-29 | | Date of Implementation | 2008-11-01 | | Quoted Standard | GB/T 4340.1; GB/T 4340.2; GB/T 18449.1; GB/T 18449.2; ASTM A370 | | Regulation (derived from) | National-accreditation-Science [2012] 57 | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the cold rolled steel sheet Rockwell hardness (HRB) Test method. This standard applies to indirect determination of cold rolled steel sheet Rockwell hardness (HRB), is the direct determination of Rockwell hardness method is not applicable (if the back of the deformed sample traces, you can not directly measure the Rockwell hardness) of the Supplementary Methods. | SN/T 2082-2008: Test method for rockwell hardness (HRB) of cold-rolled steel sheet---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.
Test method for rockwell hardness (HRB) of cold-rolled steel sheet
Exit inspection and quarantine industry standard book People's Republic of China
Cold rolled steel sheet Rockwell hardness (HRB) Test Method
Posted 2008-04-29
2008-11-01 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
The Standard Appendix A, Appendix B, Appendix C and Appendix D normative appendix.
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard was drafted. People's Republic of China Shandong CIQ.
The main drafters of this standard. Maocheng Tao, Lee shore Jin, Song Zhiyong, Shisong Jie, Qi Jialin, Li Yan Qiu.
This standard is the first release of the entry-exit inspection and quarantine industry standards.
Cold rolled steel sheet Rockwell hardness (HRB) Test Method
1 Scope
This standard specifies the test methods for cold rolled steel sheet Rockwell hardness (HRB) tests.
This standard applies to indirect determination of cold rolled steel sheet Rockwell hardness (HRB), is directly measured Rockwell hardness method is not applicable (if the test
Like the back of deformation marks the Rockwell hardness) of complementary approaches can not be directly measured.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 4340.1 Vickers hardness test - Part 1. Test methods
GB/T 4340.2 Vickers hardness test - Part 2. hardness test
GB/T 18449.1 metal Knoop hardness test - Part 1. Test methods
GB/T 18449.2 metal Knoop hardness test - Part 2. hardness test
Test methods for steel products ASTMA370 mechanical tests and definitions
Principle 3
Cold rolled steel sheet by measuring Knoop hardness or Vickers hardness, and then convert it to a Rockwell hardness (HRB) and corrected.
4 hardness
4.1 Knoop hardness
Knoop hardness should be consistent with GB/T 18449.2 requirements.
4.2 Vickers hardness tester
Vickers hardness tester should be consistent with GB/T 4340.2 requirements.
5 Sample
Use shears or other mechanical, cold rolled steel sheet for test processing, and smooth, deburring (when necessary, pre-grinding and polishing
Light), made in line with the sample GB/T 18449.1 or GB/T 4340.1 requirements.
6 Test methods
6.1 General
Standard Test Method for Knoop hardness conversion method is divided into two kinds of Vickers hardness conversion method; under test conditions permitting, as far as possible
Standard Test Method for Knoop hardness conversion to avoid errors in terms of Knoop hardness and Vickers hardness between.
6.2 Test method for the conversion of Knoop hardness
6.2.1 Knoop hardness test and conversion
According to GB/T 18449.1 requirements, using a 500g load on the specimen Knoop hardness test; in accordance with Appendix A in Table A. 1,
The test results of Knoop hardness converted to Rockwell hardness HRBK.
6.2.2 Correction of test results
In accordance with Appendix B of the test results to be amended.
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